8128-AB3-D-B中文资料

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BDW83D-S中文资料

●Designed for Complementary Use withBDW84, BDW84A, BDW84B, BDW84C and BDW84D●150 W at 25°C Case Temperature ●15 A Continuous Collector Current ●Minimum h FE of 750 at 3 V, 6 ASOT-93 PACKAGE(TOP VIEW)Pin 2 is in electrical contact with the mounting base.MDTRAAAB C E123absolute maximum ratings at 25°C case temperature (unless otherwise noted)NOTES:1.These values apply when the base-emitter diode is open circuited.2.Derate linearly to 150°C case temperature at the rate of 1.2 W/°C.3.Derate linearly to 150°C free air temperature at the rate of 28 mW/°C.4.This rating is based on the capability of the transistor to operate safely in a circuit of: L = 20 mH, I B(on) = 5 mA, R BE = 100 Ω,V BE(off) = 0, R S = 0.1 Ω, V CC = 20 V .RATINGSYMBOLVALUE UNITCollector-base voltage (I E = 0)BDW83BDW83ABDW83B BDW83C BDW83D V CBO 456080100120V Collector-emitter voltage (I B = 0) (see Note 1)BDW83BDW83ABDW83B BDW83C BDW83DV CEO 456080100120V Emitter-base voltage V EBO 5V Continuous collector current I C 15A Continuous base currentI B 0.5A Continuous device dissipation at (or below) 25°C case temperature (see Note 2)P tot 150W Continuous device dissipation at (or below) 25°C free air temperature (see Note 3)P tot 3.5W Unclamped inductive load energy (see Note 4)½LI C 2100mJ Operating junction temperature range T j -65 to +150°C Operating temperature range T stg -65 to +150°C Operating free-air temperature range T A -65 to +150°CNOTES:5.These parameters must be measured using pulse techniques, t p = 300 µs, duty cycle ≤ 2%.6.These parameters must be measured using voltage-sensing contacts, separate from the current carrying contacts.† Voltage and current values shown are nominal; exact values vary slightly with transistor parameters.electrical characteristics at 25°C case temperature (unless otherwise noted)P ARAMETERTEST CONDITIONSMIN TYP MAX UNITV (BR)CEOCollector-emitter breakdown voltageI C = 30 mAI B = 0(see Note 5)BDW83BDW83ABDW83B BDW83C BDW83D456080100120VI CEOCollector-emitter cut-off currentV CE =30VV CE =30V V CE = 40 V V CE = 50 V V CE = 60 V I B =0I B =0I B =0I B =0I B =0BDW83BDW83A BDW83B BDW83C BDW83D 11111mAI CBOCollector cut-off currentV CB =45V V CB =60V V CB = 80 V V CB = 100 VV CB = 120 V V CB =45V V CB =60VV CB=80 V V CB = 100 VV CB = 120 VI E =0I E =0I E =0I E =0I E =0I E =0I E =0I E =0I E =0I E =0T C = 150°C T C = 150°C T C = 150°C T C = 150°C T C = 150°CBDW83BDW83A BDW83B BDW83C BDW83D BDW83BDW83A BDW83B BDW83C BDW83D0.50.50.50.50.555555mA I EBO Emitter cut-off current V EB = 5 V I C =02mA h FE Forward current transfer ratio V CE = 3 VV CE = 3 V I C =6A I C =15 A (see Notes 5 and 6)75010020000V BE(on)Base-emitter voltageV CE = 3 V I C = 6 A (see Notes 5 and 6) 2.5V V CE(sat)Collector-emitter saturation voltage I B = 12 mA I B = 150 mA I C =6A I C =15 A (see Notes 5 and 6) 2.54V V ECParallel diode forward voltageI E = 15 AI B = 03.5Vthermal characteristicsP ARAMETERMINTYPMAX UNIT R θJC Junction to case thermal resistance 0.83°C/W R θJAJunction to free air thermal resistance35.7°C/Wresistive-load-switching characteristics at 25°C case temperatureP ARAMETER TEST CONDITIONS †MINTYP MAXUNIT t on T urn-on time I C = 10 A V BE(off) = -4.2 VI B(on) = 40 mA R L = 3 ΩI B(off) = -40 mA t p = 20 µs, dc ≤ 2%0.9µs t offT urn-off time7µs。

八年级数学期中模拟卷(湖北省卷专用)(全解全析)

（考试时间：120分钟试卷满分：1202024-2025学年八年级数学上学期期中模拟卷（湖北省卷专用）分）注意事项：1．答卷前，考生务必将自己的姓名、准考证号等填写在答题卡和试卷指定位置上。

2．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。

如需改动，用橡皮擦干净后，再选涂其他答案标号。

回答非选择题时，将答案写在答题卡上。

写在本试卷上无效。

3．考试结束后，将本试卷和答题卡一并交回。

4．测试范围：人教版第11章三角形+第12章全等三角形+第13章轴对称。

5．难度系数：0.65。

第一部分（选择题共30分）一、选择题（本大题共10小题，每小题3分，满分30分．在每个小题给出的四个选项中，只有一项符合题目要求的）1．下列长度的三条线段能首尾相接构成三角形的是（）A ．1，2，3B ．3，4，C ．4，5，10D ．6，9，2【解答】解：根据三角形的三边关系，得：A 、1+2＝3，不能构成三角形，不符合题意；B 、3+4＞5，能构成三角形，符合题意；C 、4+5＜10，不能构成三角形，不符合题意；D 、2+6＜9，不能构成三角形，不符合题意．故选：B ．2．第33届夏季奥运会于2024年7月26日至8月11日在法国巴黎举行，中国取得金牌榜第一名的好成绩，如图所示巴黎奥运会项目图标中，是轴对称图形的是（）A ．B．C．D．【解答】解：A．该图形不是轴对称图形，故此选项不合题意；B．该图形不是轴对称图形，故此选项不合题意；C．该图形是轴对称称图形，故此选项符合题意；D．该图形不是轴对称图形，故此选项不合题意．故选：C．3．如图，△ACE≌△DBF，若AD＝11cm，BC＝5cm，则AB长为（）A．6cm B．7cm C．4cm D．3cm【解答】解：∵△ACE≌△DBF，∴AC＝BD，∴AC﹣BC＝BD﹣BC，即AB＝CD，∵AD＝11cm，BC＝5cm，∴AB＝（11﹣5）÷2＝3（cm），故选：D．4．如图，将一副三角尺按图中所示位置摆放，点C在FD的延长线上，点C、F分别为直角顶点，且∠A＝60°，∠E＝45°，若AB∥CF，则∠CBD的度数是（）A．15°B．20°C．25°D．30°【解答】解：∵AB∥CF，∴∠BCD＝∠ABC＝30°．∵∠BDF是△BCD的外角，∴∠CBD＝∠EDF﹣∠BCD＝45°﹣30°＝15°．故选：A．5．如图，在△ABC和△DEF中，点B，F，C，E在同一直线上，∠ACB＝∠DFE，BF＝EC，只添加一个条件，不能判定△ABC≌△DEF的是（）A．AC＝DF B．AB＝DE C．∠A＝∠D D．∠B＝∠E【解答】解：∵BF＝EC，∴BF+FC＝EC+FC，∴BC＝EF，A、由SAS判定△ABC≌△DEF，故A不符合题意；B、∠ACB和∠DFE分别是AB和DE的对角，不能判定△ABC≌△DEF，故B符合题意；C、由AAS判定△ABC≌△DEF，故C不符合题意；D、由ASA判定△ABC≌△DEF，故D不符合题意．故选：B．6．如图，由一个正六边形和正五边形组成的图形中，∠1的度数应是（）A．72°B．84°C．82°D．94°【解答】解：如图，由题意得：∠3＝360°÷6＝60°，∠4＝360°÷5＝72°，则∠2＝180°﹣60°﹣72°＝48°，所以∠1＝360°﹣48°﹣120°﹣108°＝84°．故选：B．7．下列对△ABC的判断，不正确的是（）A．若AB＝AC，∠C＝60°，则△ABC是等边三角形B．若∠A：∠B：∠C＝1：2：3，则△ABC是直角三角形C．若∠A＝50°，∠B＝80°，则△ABC是等腰三角形D．若AB＝BC，∠C＝40°，则∠B＝40°【解答】解：A、若AB＝AC，∠C＝60°，则△ABC是等边三角形，说法正确，不符合题意；B、若∠A：∠B：∠C＝1：2：3，则△ABC是直角三角形，说法正确，不符合题意；C、若∠A＝50°，∠B＝80°，可得∠C＝50°，则△ABC是等腰三角形，说法正确，不符合题意；D、若AB＝BC，∠C＝40°，则∠A＝40°∠B= 100°，说法错误，符合题意；故选：D．8．如图，在△ABC中，PM、QN分别是线段AB、AC的垂直平分线，若∠BAC＝110°，则∠PAQ的度数是（）A．40°B．50°C．60°D．70°【解答】解：∵∠BAC＝110°，∴∠B+∠C＝180°﹣∠BAC＝70°，∵PM、QN分别是线段AB、AC的垂直平分线，∴AP＝BP，CQ＝AQ，∴∠BAP＝∠B，∠CAQ＝∠C，∴∠BAP+∠CAQ＝∠B+∠C＝70°，∵∠BAC＝110°，∴∠PAQ＝∠BAC﹣（∠BAP+∠CAQ）＝110°﹣70°＝40°，故选：A．9．如图，在△ABC中，AB＝21cm，AC＝12cm，∠A＝60°，点P从点B出发以每秒3cm的速度向点A运动，点Q从点A同时出发以每秒2cm的速度向点C运动，其中一个动点到达端点时，另一个动点也随之停止运动，设运动时间为t 秒，当△APQ 为直角三角形时，t 的值为（）A ．2.5秒B ．3秒C ．3或214秒D ．2.5或3秒【解答】解：根据题意得：AP ＝AB ﹣BP ＝21﹣3t ，AQ ＝2t ，∵△APQ 为直角三角形，∠A ＝60°，∴当∠AQP ＝90°，∠APQ ＝30°时，则AQ =12AP ，∴2t =12(21―3t)，解得：t ＝3，当∠APQ ＝90°，∠AQP ＝30°时，则12AQ =AP ，∴12×2t =21―3t ，解得：t =214，综上，当t 的值为3秒或214秒时，△APQ 为直角三角形，故选：C ．10．如图，△ABC 中，∠ABC 、∠FCA 的角平分线BP 、CP 交于点P ，延长BA 、BC ，PM ⊥BE 于M ，PN ⊥BF 于N ，则下列结论：①AP 平分∠EAC ；②∠ABC +2∠APC ＝180°；③∠BAC ＝2∠BPC ；④S △PAC ＝S △MAP +S △NCP ．其中正确结论的个数是（）A ．1个B ．2个C ．3个D ．4个【解答】解：①过点P 作PD ⊥AC 于D ，∵PB 平分∠ABC ，PC 平分∠FCA ，PM ⊥BE ，PN ⊥BF ，PD ⊥AC ，∴PM ＝PN ，PN ＝PD ，∴PM ＝PD ，∵PM ⊥BE ，PD ⊥AC ，∴AP 平分∠EAC ，故①正确；②∵PM ⊥AB ，PN ⊥BC ，∴∠ABC +90°+∠MPN +90°＝360°，∴∠ABC +∠MPN ＝180°，在Rt △PAM 和Rt △PAD 中，PM =PD PA =PA ，∴Rt △PAM ≌Rt △PAD （HL ），∴∠APM ＝∠APD ，同理：Rt △PCD ≌Rt △PCN （HL ），∴∠CPD ＝∠CPN ，∴∠MPN ＝2∠APC ，∴∠ABC +2∠APC ＝180°，②正确；③∵BP 平分∠ABC ，CP 平分∠FCA ，∴∠ACF ＝∠ABC +∠BAC ＝2∠PCF ，∠PCF =12∠ABC +∠BPC ，∴∠BAC ＝2∠BPC ，③正确；④由②可知Rt △PAM ≌Rt △PAD （HL ），Rt △PCD ≌Rt △PCN （HL ），∴S △APD ＝S △MAP ，S △CPD ＝S △NCP ，∴S △PAC ＝S △MAP +S △NCP ，故④正确，故选：D ．第二部分（非选择题共90分）二、填空题（本大题共5小题，每小题3分，满分15分）11．已知等腰三角形的周长为18，其中一边长为5，则该等腰三角形的底边长为　．【解答】解：当腰为5时，另一腰也为5，则底为18﹣2×5＝8，∵5+5＞8，符合题意，当底为5时，腰为（18﹣5）÷2＝6.5，符合题意，∴该三角形的底边长为8或5．故答案为：8或5．12．如图，在△ABC中，AB＝BE，AD＝DE．若∠A＝70°，∠C＝50°，则∠EDC＝ °．【解答】解：在△ABD和△EBD中，AB=EB AD=DE BD=BD，∴△ABD≌△EBD（SSS）∴∠DEB＝∠A＝70°，∵∠C＝50°，∠BED＝∠C+∠EDC，∴∠EDC＝70°﹣50°＝20°故答案为：20°13．如图，BC、AE是锐角△ABF的高，相交于点D，若AD＝BF，AF＝7，CF＝2，则BD的长为　．【解答】解：∵BC、AE是锐角△ABF的高，∴∠DCA＝∠BCF＝∠AEF＝90°，∵∠DAC+∠ADC＝90°，∠EAF+∠F＝90°∴∠ADC＝∠F，在△ADC和△BFC中，∠ACD=∠BCF ∠ADC=∠FAD=BF，∴△ADC≌△BFC（AAS），∴CD＝CF＝2，BC＝AC＝AF﹣CF＝7﹣2＝5∴BD＝BC﹣CD＝5﹣2＝3，故答案为：3．14．将△ABC按如图所示翻折，DE为折痕，若∠A+∠B＝130°，则∠1+∠2＝ °．【解答】解：在△ABC中，∠A+∠B+∠C＝180°，在△CDE中，∠CDE+∠CED+∠C＝180°，∴∠A+∠B＝∠CDE+∠CED，∵∠A+∠B＝130°，∴∠CDE+∠CED＝130°，∴∠BED+∠ADE＝360°﹣130°＝230°，由折叠的性质得，∠BED＝∠B'ED，∠ADE＝∠A'DE，∴∠B'ED+∠A'DE＝230°，即∠1+∠CDE+∠2+∠CED＝230°，∴∠1+∠2＝230°﹣130°＝100°，故答案为：100．15．如图，等腰三角形ABC的面积为24，底边BC＝6，腰AC的垂直平分线EF分别交边AC、AB于E、F 两点，点M为线段EF上一动点，点D为BC的中点，连接CM、DM．在点M的运动过程中，△CDM 的周长存在最小值为．【解答】解：连接AD ，AM ，∵△ABC 是等腰三角形，点D 是BC 边的中点，∴AD ⊥BC ，CD =12BC =3，∴S △ABC =12BC ⋅AD =12×6AD =24，解得AD ＝8，∵EF 是线段AC 的垂直平分线，∴MA ＝MC ，∴MC +DM ＝MA +DM ≥AD ，∴AD 的长为CM +MD 的最小值，∴△CDM 的周长最短为：CM +MD +CD ＝AD +CD ＝8+3＝11，故答案为：11．三、解答题（本大题共9小题，满分75分．解答应写出文字说明，证明过程或演算步骤）16．（6分）如图，已知AE ∥CF ，AB ＝CD ，∠ADF ＝∠CBE ．求证：△ABE ≌△CDA ．【解答】证明：∵AE ∥CF ，∴∠BAE ＝∠C ，∵∠ADF ＝∠CBE ，∴180°﹣∠ADF ＝180°﹣∠CBE ，即∠ADC ＝∠EBA ，又∵AB ＝CD ，在△ABE 和△CDA 中，∠BAE =∠C AB =CD ∠ADC =∠EBA，∴△ABE ≌△CDA （ASA ）．17．（7分）如图，在△ABC 中，AD 是高，AE 、BF 是角平分线，它们相交于点O ，∠C ＝70°．（1）求∠AOB 的度数；（2）若∠ABC ＝50°，求∠DAE 的度数．【解答】解：（1）∵AE 、BF 是∠BAC 、∠ABC 的角平分线，∴∠OAB +∠OBA =12(∠BAC +∠ABC)，在△ABC 中，∠C ＝70°，∴∠BAC +∠ABC ＝180°﹣∠C ＝110°，∴∠AOB =180°―∠OAB ―∠OBA =180°―12(∠BAC +∠ABC)=125°；（2）∵在△ABC 中，AD 是高，∠C ＝70°，∠ABC ＝50°，∴∠DAC ＝90°﹣∠C ＝90°﹣70°＝20°，∠BAC ＝180°﹣∠ABC ﹣∠C ＝60°∵AE是∠BAC的角平分线，∴∠CAE=12∠CAB=30°，∴∠DAE＝∠CAE﹣∠CAD＝30°﹣20°＝10°，∴∠DAE＝10°．18．（8分）△ABC在平面直角坐标系中的位置如图所示．（1）作出与△ABC关于y轴对称的△A1B1C1；（2）写出点A、B、C关于x轴的对称点的坐标；（3）求出△ABC的面积．【解答】解：（1）如图所示，△A1B1C1即为所求．……………………2分（2）如图所示，A2（﹣2，﹣3），B2（﹣3，﹣2），C2（﹣1，﹣1）；……………………5分（3）△ABC的面积为2×2―12×1×2―12×1×2―12×1×1=32．……………………8分19．（8分）如图，在四边形ABCD中，AD∥BC，∠A＝90°，BE＝AD，CE⊥BD，垂足为E．（1）求证：△ABD≌△ECB；（2）若∠DBC＝50°，求∠DCE的度数．【解答】（1）证明：∵AD∥BC，∴∠ADB＝∠EBC．∵CE⊥BD，∠A＝90°，∴∠A＝∠CEB，在△ABD和△ECB中，∠ADB=∠EBC BE=AD∠A=∠CEB∴△ABD≌△ECB（ASA）；……………………4分（2）解：∵△ABD≌△ECB，∴BC＝BD，∵∠DBC＝50°，∴∠EDC=12（180°﹣50°）＝65°，又∵CE⊥BD，∴∠CED＝90°，∴∠DCE＝90°﹣∠EDC＝90°﹣65°＝25°．……………………8分20．（8分）如图，在△ABC中，AB＝AC，点D为BC的中点，连接AD，AB的垂直平分线EF交AB于点E，交AD于点O，交AC于点F，连接OB，OC．（1）求证：△AOC为等腰三角形；（2）若∠BAD＝20°，求∠COF的度数．【解答】（1）证明：∵EF是AB的中垂线，∴OA＝OB，∵AB＝AC，D为BC中点，∴AD⊥BC，∴AD是BC的中垂线，∴OB＝OC，∴OA＝OC，∴△OAC是等腰三角形．……………………4分（2）解：∵AB＝AC，D为BC中点，∴∠DAC＝∠BAD＝20°，∴∠BAC＝40°，∵EF是AB的中垂线，∴EF⊥AB，∴∠AFE＝50°，∵OA＝OC，∴∠OCA＝∠OAC＝20°，∵∠AFE＝∠OCA+∠COF，∴50°＝20°+∠COF，∴∠COF＝30°．……………………8分21．（8分）如图，在△ABC中，∠C＝90°，AD是∠BAC的平分线，DE⊥AB于E，F在AC上，且BD＝DF．（1）求证：CF＝EB；（2）试判断AB与AF，EB之间存在的数量关系．并说明理由．【解答】（1）证明：∵AD是∠BAC的平分线，DE⊥AB，∠C＝90°，∴DC＝DE，在Rt△FCD和Rt△BED中，DC=DE DF=DB，∴Rt△FCD≌Rt△BED（HL），∴CF＝EB；……………………4分（2）解：AB＝AF+2BE，……………………5分理由如下：在Rt△ACD和Rt△AED中，DC=DE AD=AD，∴Rt△ACD≌Rt△AED（HL），∴AC＝AE，∴AB＝AE+BE＝AF+FC+BE＝AF+2BE．……………………8分22．（8分）在等边三角形ABC中，点E在AB边上，点D在CB的延长线上，且DE＝EC．（1）如图1，当E为AB中点时，求证：CB＝2BD；（2）如图2，若AB＝12，AE＝2，求CD的长．【解答】解：（1）∵△ABC为等边三角形，∴∠ABC＝∠A＝∠ACB＝60°，∵EB＝AE，∴CE⊥AB，CE是∠ACB的角平分线，∴∠BEC＝90°，∠BCE＝30°，∴2EB＝BC，∵ED＝EC，∴∠EDC＝∠ECD＝30°，∴∠DEB＝60°﹣30°＝30°，∴BD＝BE，∴BC=2BD；……………………4分（2）如图2，过点E作EF∥BC，交AC于点F，∵△ABC为等边三角形，∴∠AFE＝∠ACB＝∠ABC＝60°，△AEF为等边三角形，∴∠EFC＝∠EBD＝120°，EF＝AE，∵ED＝EC，∴∠EDB＝∠ECB，∠ECB＝∠FEC，∴∠EDB＝∠FEC，在△BDE和△FEC中，∠EBD=∠EFC ∠EDB=∠FEC ED=EC，∴△BDE≌△FEC（AAS），∴BD＝EF，∴AE＝BD，∴CD＝BC+BD＝12+2＝14．……………………8分23．（10分）小明在学习过程中，对教材中的一个有趣问题做如图探究：（1）【习题回顾】已知：如图1，在△ABC中，∠ACB＝90°，AE是角平分线，CD是高，AE、CD相交于点F．求证：∠CFE＝∠CEF；（2）【变式思考】如图2，在△ABC中，∠ACB＝90°，CD是AB边上的高，若△ABC的外角∠BAG的平分线交CD的延长线于点F，其反向延长线与BC边的延长线交于点E，若∠B＝40°，求∠CEF和∠CFE的度数；（3）【探究延伸】如图3，在△ABC中，在AB上存在一点D，使得∠ACD＝∠B，角平分线AE交CD 于点F．△ABC的外角∠BAG的平分线所在直线MN与BC的延长线交于点M，若∠M＝35°，求∠CFE 的度数．【解答】（1）证明：∵∠ACB＝90°，CD是高，∴∠B+∠CAB＝90°，∠ACD+∠CAB＝90°，∴∠B＝∠ACD，∵AE是角平分线，∴∠CAF＝∠DAF，∵∠CFE＝∠CAF+∠ACD，∠CEF＝∠DAF+∠B，∴∠CEF＝∠CFE；……………………3分（2）解：∵∠B＝40°，∠ACB＝90°，∴∠GAB＝∠B+∠ACB＝40°+90°＝130°，∵AF为∠BAG的角平分线，∴∠GAF＝∠DAF=12×130°＝65°，∵CD为AB边上的高，∴∠ADF＝∠ACE＝90°，∴∠CFE＝90°﹣∠GAF＝90°﹣65°＝25°，……………………5分又∵∠CAE＝∠GAF＝65°，∠ACB＝90°，∴∠CEF＝90°﹣∠CAE＝90°﹣65°＝25°；……………………7分（3）证明：∵C、A、G三点共线，AE、AN为角平分线，∴∠EAN＝90°，又∵∠GAN＝∠CAM，∴∠M+∠CEF＝90°，∵∠CEF＝∠EAB+∠B，∠CFE＝∠EAC+∠ACD，∠ACD＝∠B，∴∠CEF ＝∠CFE ，∴∠M +∠CFE ＝90°．∴∠CFE ＝90°﹣∠M ＝90°﹣35°＝55°． ……………………10分24．（12分）如图，△ABC 是等腰直角三角形，AB ＝BC ，直角顶点B 在x 轴上，一锐角顶点C 在y 轴上．（1）如图1，若点B 的坐标是（﹣2，0），点A 的坐标是（3，2），求点C 的坐标．（2）如图2，若y 轴恰好平分∠ACB ，AB 与y 轴交于点D ，过点A 作AE ⊥y 轴于点E ，问CD 与AE 有怎样的数量关系？并说明理由．（3）如图3，直角边BC 的两个端点在两坐标轴上滑动，使点A 在第二象限内，过点A 作AF ⊥y 轴于点F ，在滑动的过程中，OB―AF OC为定值，求出这个定值．【解答】解：（1）如图1，过点A 作AN ⊥x 轴于点N ，则∠ANB ＝∠BOC ＝90°，∴∠ABN +∠BAN ＝90°，∵△ABC 是等腰直角三角形，AB ＝BC ，∴∠ABN +∠CBO ＝∠ABC ＝90°，∴∠BAN ＝∠CBO ，在△BAN 和△CBO 中，∠ANB =∠BOC ∠BAN =∠CBO AB =BC，∴△BAN ≌△CBO （AAS ），∴BN ＝CO ，∵点B 的坐标是（﹣2，0），点A 的坐标是（3，2），∴BN ＝2+3＝5，∴CO ＝5，∴点C 的坐标为（0，﹣5），……………………4分（2）CD 与AE 的数量关系为：CD ＝2AE ，理由如下：……………………5分如图2，延长AE 交CB 的延长线于点G ，∵y 轴平分∠ACB ，AE ⊥y ，∴△ACG 是等腰三角形，∠AED ＝90°，∴AE ＝GE =12AG ，∠GAB +∠ADE ＝90°，∵△ABC 是等腰直角三角形，＝BC ，∴∠CBD ＝∠ABG ＝90°，∴∠DCB +∠CDB ＝90°，∵∠ADE ＝∠CDB ，∴∠GAB ＝∠DCB ，在△GAB 和△DCB 中，∠ABG =∠CBD AB =BC ∠GAB =∠DCB，∴△GAB ≌△DCB （ASA ），∴AG ＝CD ，∴AE =12CD ，∴CD ＝2AE ； ……………………8分（3）如图3，过点A 作AH ⊥OB 于点H ，则∠AHB ＝∠AHO ＝90°，∵AF ⊥y 轴，∴四边形AHOF 是矩形，∴OH ＝AF ，∵∠ABH +∠CBO ＝90°，∠CBO +∠BCO ＝90°，∴∠ABH ＝∠BCO ，在△ABH 和△BCO 中，∠AHB =∠BOC =90°∠ABH =∠BCO AB =BC，∴△ABH ≌△BCO （AAS ），∴HB ＝OC ，∵HB ＝OB ﹣OH ＝OB ﹣AF ，∴OC ＝OB ﹣AF ，∴OB―AF OC =1． ……………………12分。

Belimo B280 铝合金三角管值数据表说明书

B280•ApplicationStainless Steel Ball and StemTechnical dataFunctional dataValve Size 3" [80]Fluidchilled or hot water, up to 60% glycol Fluid Temp Range (water)0...212°F [-18...100°C]Body Pressure Rating 400 psi Close-off pressure ∆ps 100 psiFlow characteristic equal percentage Servicing maintenance-free Flow Pattern 2-way Leakage rate0% for A – AB Controllable flow range 75°Cv170 Body pressure rating note 400 psiCv Flow RatingA-port: as stated in chart B-port: 70% of A – AB Cv MaterialsValve body Nickel-plated brass body Stem seal EPDM (lubricated)SeatPTFEPipe connection NPT female ends O-ring EPDM (lubricated)Ballstainless steel Suitable actuatorsNon-SpringARB(X)Safety notesWARNING: This product can expose you to lead which is known to the State of California to cause cancer and reproductive harm. For more information go to Product featuresThis valve is typically used in air handling units on heating or cooling coils, and fan coil unit heating or cooling coils. Some other common applications include Unit Ventilators, VAV box re-heat coils and bypass loops. This valve is suitable for use in a hydronic system with variable flow.Flow/Mounting detailsB280 DimensionsDimensional drawingsARB, ARXA B C D E F H1H211.0" [280] 5.8" [148]8.5" [217] 6.0" [152] 2.8" [71] 2.8" [71] 2.1" [53]0.8" [20]AFRB, AFRXA B C D E F11.8" [299] 5.8" [148]9.1" [231] 6.6" [168] 2.0" [51] 2.0" [51]AFRB N4, AFRX N4A B C D E F13.0" [330] 5.8" [148]10.3" [262]9.4" [239] 3.4" [86] 3.4" [86]ARB N4, ARX N4, NRB N4, NRX N4A B D E F11.4" [289] 5.8" [148]8.0" [203] 3.1" [80] 3.1" [80]ARQB, ARQXA B C D E F H1H29.9" [251] 4.2" [107]8.6" [219] 6.1" [155] 2.8" [71] 2.8" [71]0.8" [20]0.6" [15]ARB24-SR-T••••••Modulating, Non-Spring Return, 24 V, for DC 2...10 V or 4...20 mATechnical dataElectrical dataNominal voltageAC/DC 24 V Nominal voltage frequency 50/60 Hz Power consumption in operation 2.5 W Power consumption in rest position 0.4 WTransformer sizing 5 VA (class 2 power source)Electrical Connection Terminal blocksOverload Protectionelectronic thoughout 0...90° rotation Functional dataOperating range Y 2...10 VOperating range Y note 4...20 mA w/ ZG-R01 (500 Ω, 1/4 W resistor)Input Impedance 100 kΩ for 2...10 V (0.1 mA), 500 Ω for 4...20 mA Position feedback U 2...10 VDirection of motion motor selectable with switch 0/1Manual override external push button Angle of rotation 90°Angle of rotation note adjustable with mechanical stop Running Time (Motor)90 s Noise level, motor 45 dB(A)Position indicationMechanically, pluggable Safety dataDegree of protection IEC/EN IP54Degree of protection NEMA/UL NEMA 2 UL Enclosure Type 2Agency Listing cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2014/30/EU Quality Standard ISO 9001Ambient temperature -22...122°F [-30...50°C]Storage temperature -40...176°F [-40...80°C]Ambient humidity max. 95% r.H., non-condensing Servicingmaintenance-free WeightWeight2.2 lb [1.0 kg]Safety notesNEMA 4X, 316L stainless steel enclosure.Battery Back Up System for SY(7~10)-110ZS-300 without brackets.Terminal-strip cover for NEMA 2 rating (-T models).MFT95 resistor kit for 4 to 20 mA control applications.Battery Back Up System for SY(10~12)-220PElectrical installationARB24-SR-TINSTALLATION NOTESProvide overload protection and disconnect as required.Actuators may be connected in parallel. Power consumption and input impedance must be observed.Actuators may also be powered by 24 VDC.Only connect common to negative (-) leg of control circuits.A 500 Ω resistor (ZG-R01) converts the 4...20 mA control signal to 2...10 V.Actuators are provided with a numbered screw terminal strip instead of a cable.Meets cULus requirements without the need of an electrical ground connection.Warning! Live Electrical Components!During installation, testing, servicing and troubleshooting of this product, it may be necessary to workwith live electrical components. Have a qualified licensed electrician or other individual who has beenproperly trained in handling live electrical components perform these tasks. Failure to follow all electricalsafety precautions when exposed to live electrical components could result in death or serious injury.2...10 V / 4...20 mA Control。

B18系列产品说明书

6MB18A 812MB18A 16MB18A MCS50B18A 6M3B18ACO 812MB18S
*(XXX)CO
4
MC/AC
4
1/2" [13] & 3/4" [19]
Attaches to 1/8" [3] through 1/4" [6] flange.
4
1" [25]
4
MC/AC
4
1/2" [13] & 3/4" [19]
other purpose.
NOTE: All load ratings are for static conditions and do not account for dynamic loading such as wind, water or seismic loads, unless otherwise noted.
Pentair, CADDY, ERICO CADWELD, ERICO CRITEC, ERICO, ERIFLEX, and LENTON are owned by Pentair or its global affiliates. All other trademarks are the property of their respective owners. Pentair reserves the right to change specifications without prior notice.
CADDY B18 series with threaded rod going through both
the B18 and the box, this single support is appropriate.

L9823中文资料

1/12L9823April 2003s OUTPUTS CURRENT CAPABILITY UP TO 0.5As CASCADABLE SPI CONTROL FOR OUTPUTSs RESET FUNCTION WITH RESET SIGNAL OR UNDERVOLTAGE AT V DDsPROGRAMMABLE INTRINSIC OUTPUT VOLTAGE CLAMPING AT TYP. 50V FOR INDUCTIVE SWITCHINGs OVERCURRENT SHUTDOWN WITH LATCH-OFF FOR EVERY WRITE CYCLE (SFPD = LOW)s INDEPENDENT THERMAL SHUTDOWN OF OUTPUTS (SOA PROTECTION)s OUTPUT STATUS DATA AVAILABLE ON THE SPI USING 8-BIT I/O PROTOCOL UP TO 3.0MHZ s LOW STANDBY CURRENT WITH RESET = LOW (TYP 35µA @ VDD)s OPEN LOAD DETECTION (OUTPUTS OFF)s SINGLE V DD LOGIC SUPPLYs HIGH EMS IMMUNITY AND LOW EME (CONTROLLED OUTPUT SLOPES)sFULL FUNCTIONALITY OF THE REMAINING DEVICE AT NEGATIVE VOLTAGE DROP ONOUTPUTS (-1,5V OR -3,0A)sOUTPUT MODE PROGRAMMABLE FOR SUSTAINED CURRENT LIMIT OR SHUTDOWNDESCRIPTIONL9823 is a Octal Low-Side Driver Circuit, dedicated for automotive applications. Output voltage clamping is provided for flyback current recirculation, when in-ductive loads are driven. Chip Select and cascadable Serial 8-bit Interface for outputs control and diagnos-tic data transfer.Octal Low-Side Driver for bulb, resistive and inductive loads withserial input control, output protection and diagnosticL9823PIN FUNCTIONN°Pin Description1Out 7Output 72Out 6Output 63SCLK SCLK. The system clock pin (SCLK) clocks the internal shift registers of the L9823. The serial input pin (SI) accepts data into the input shift register on the falling edge of the SCLK signal whilethe serial output pin (SO) shifts data information out of the shift register on the rising edge of theSCLK signal. False clocking of the shift register must be avoided to guarantee validity of data. Itis essential that the SCLK pin be in a logic low state whenever chip select bar pin (CSB) makesany transition. For this reason, it is recommended though not necessary, that the SCLK pin bekept in a low logic state as long as the device is not accessed (CSB in logic high state). WhenCSB is in a logic high state, any signal at the SCLK and SI pin is ignored and SO is tri-stated(high-impedance).4SI SI. This pin is for the input of serial instruction data. SI information is read in on the falling edge of SCLK. A logic high state present on this pin when the SCLK signal rises will program aspecific output OFF, and in turn, turns OFF the specific output on the rising edge of the CSBsignal. Conversely, a logic low state present on the SI pin will program the output ON, and inturn, turns ON the specific output on the rising edge of the CSB signal. To program the eightoutputs of the L9823 ON or OFF, an eight bit serial stream of data is required to be entered intothe SI pin starting with Output 7, followed by Output 6, Output 5, etc., to Output 0. For each riseof the SCLK signal, with CSB held in a logic low state, a databit instruction (ON or OFF) isloaded into the shift register per the databit SI state. The shift register is full after eight bits ofinformation have been entered. To preserve data integrity, care should be taken to not transitionSI as SCLK transitions from a low-to-high logic state.5GND GND6GND GND7GND GND8GND GND9SO SO. The serial output (SO) pin is the tri-stateable output from the shift register. The SO pin remains in a high impedance state until the CSB pin goes to a logic low state. The SO datareports the drain status, either high or low. The SO pin changes state on the rising edge of SCLKand reads out on the falling edge of SCLK. When an output is OFF and not faulted, thecorresponding SO databit is a high state. When SO an output is ON, and there is no fault, thecorresponding databit on the SO pin will be a low logic state. The SI / SO shifting of data followsa first-in-first-out protocol with both input and output words transferring the Most Significant Bit(MSB) first. The SO pin is not affected by the status of the Reset pin.10CSB CSB. The system MCU selects the L9823 to be communicated with through the use of the CSB pin. Whenever the pin is in a logic low state, data can be transferred from the MCU to the L9823and vise versa. Clocked-in data from the MCU is transferred from the L9823 shift register andlatched into the power outputs on the rising edge of the CSB signal. On the falling edge of theCSB signal, drain status information is transferred from the power outputs and loaded into thedevice's shift register. The CSB pin also controls the output driver of the serial output pin.Whenever the CSB pin goes to a logic low state, the SO pin output driver is enabled allowinginformation to be transferred from the L9823 to the MCU. To avoid any spurious data, it isessential that the high-to-low transition of the CSB signal occur only when SCLK is in a logic lowstate.11Out 5Output 512Out 4Output 413Out 3Output 32/123/12L9823ABSOLUTE MAXIMUM RATINGSFor voltages and currents applied externally to the device. Exceeding limits may cause damage to the device .14Out 2Output 215SFPDSFPD. The Short Fault Protect Disable (SFPD) pin is used to disable the overcurrent latch-OFF.This feature allows control of incandescent loads where in-rush currents exceed the device's analog current limits. Essentially the SFPD pin determines whether the L9823 output(s) will instantly shutdown upon sensing an output short or remain ON in a current limiting mode of operation until the output short is removed or thermal shutdown is reached. If the SFPD pin is tied to VDD the L9823 output(s) will remain ON in a current limited mode of operation upon encountering a load short to supply. If the SFPD pin is grounded, a short circuit will immediately shutdown only the output affected. Other outputs not having a fault condition will operate normally.16VDD VDD 17GND GND 18GND GND 19GND GND 20GND GND21NC Not Connected22ResetReset. The Reset pin is active low and used to clear the SPI shift register and in doing so sets all output switches OFF. With the device in a system with an MCU; upon initial system power up,the MCU holds the Reset pin of the device in a logic low state ensuring all outputs to be OFF until the VDD pin voltages are adequate for predictable operation. After the L9823 is Reset, the MCU is ready to assert system control with all output switches initially OFF. The Reset pin is active low and has an internal pull-down incorporated to ensure operational predictability should the external pull-down of the MCU open circuit. The internal pull-up is to afford safe and easy interfacing to the MCU. The Reset pin of the L9823 should be pulled to a logic low state for a duration of at least 160ns to ensure reliable Reset.23Out 1Output 124Out 0Output 0N°Pin DescriptionPIN FUNCTION (continued)L98234/12Note1)All inputs are protected against ESD according to MIL 883C; tested with HBM C = 100pF, R = 1500Ω at ±2KV. It corresponds to a dissipated energy E ≤ 0.2mJ (data available upon request).2)Transient pulses in accordance to DIN40839 part 1, 3 and ISO 7637 Part 1, 3.3)Max. output clamp energy at T j = 150°C, using single non-repetitive pulse of 500mATHERMAL DATAELECTRICAL CHARACTERISTCS (4.5V ≤ V≤ 5.5V; -40°C ≤ T ≤ 150°C; unless otherwise specifiedABSOLUTE MAXIMUM RATINGS (continued)L9823 ELECTRICAL CHARACTERISTCS (continued)5/12L9823ELECTRICAL CHARACTERISTCS (continued)Outputs Control Tables :Outputs:SI-bit01Output on off 6/12L9823 Output Control register structure :Power outputs characteristicsfor flyback current, outputs short circuit protection and diagnosticsFor output currents flowing into the circuit the output voltages are limited. The typical value of this voltage is 50V. This function allows that the flyback current of a inductive load recirculates into the circuit; the flyback energy is absorbed in the chip.Output short circuit protection SFPD = Low (dedicated for loads without inrush current): when the output current exceeds the short circuit threshold, the corresponding output overload latch is set after a delay time t dly SCB and the output is switched off. The delay timer is started after each rise of CSB and valid datas are transfered to the output control register. If the short takes place after the delay time has elapsed the shutdown is immediate (with-in 15µs).Output short circuit protection SFPD = High (dedicated for loads with inrush current, as lamps): when the load current would exceed the short circuit limit value, the corresponding output goes in a current regulation mode. The output current is determined by the output characteristics and the output voltage depends on the load re-sistance. In this mode high power is dissipated in the output transistor and its temperature increases rapidly. When the power transistor temperature exceeds the thermal shutdown threshold, the overload latch is set and the corresponding output switched off.For the load diagnostic in output off condition each output features a diagnostic current sink, of typ 60µA. FUNCTIONAL DESCRIPTIONGeneralThe L9823 integrated circuit features 8 power low-side-driver outputs. Data is transmitted to the device using the Serial Peripheral Interface = SPI protocol. The power outputs features voltage clamping function for flyback current recirculation and are protected against short circuit to Vbat.The diagnostics recognizes two outputs fault conditions: 1) overcurrent and thermal overload in switch-ON con-dition and 2) open load or short to GND in switch-OFF condition for all outputs. The outputs status can be read out via the serial interface.The chip internal Reset is a OR function of the external Reset signal and internally generated undervoltage Re-set signal.7/12L9823Output Stages ControlEach output is controlled with its latch and with a common Reset line, which enables all outputs.The control data are transmitted via the SI input, the timing of the serial interface is shown in Fig. 1.The device is selected with low CSB signal and the input data are transferred into the 8 bit shift register at every falling SCLK edge. The rising edge of the CSB latches the new data from the shift register to the drivers.The SPI register data are transferred to the output latch at rising CSB edge. The digital filter between CSB and the output latch ensures that the data are transferred only after 8 SCLK cycles or multiple of 8 SCLK cycles since the last CSB falling edge. The CSB changes only at low SCLK.DiagnosticsThe output voltage at all outputs is compared with the diagnostic threshold, typ 0,55 • V DD = V DG. Diagnostic Table for outputs:Output Output-voltage Status-bit Output-mode off> DG-threshold high correct operationoff< DG-threshold low fault condition 2)on< DG-threshold low correct operationon> DG-threshold high fault condition 1)Fault condition 1) "output short circuit to Vbat" : For SFPD = Low the output was switched on and the voltage at the output exceeded the diagnostics threshold due to overcurrent, the output overload latch was set and the output has been switched off. The diagnostic bit is high.: For SFPD = High the output was switched on and the voltage at the output exceeds the diagnostics threshold. The output operates in current regulation mode or has been switched off due to thermal shutdown. The status bit is high.Fault condition 2) "open load" or "output short circuit to GND" : the output is switched off and the voltage at the output drops below the diagnostics threshold, because the load current is lower than the output diagnostic cur-rent source, the load is interrupted. The diagnostic bit is low.At the falling edge of CSB the output status data are transferred to the shift register. When SCB is low, data bits contained in the shift register are transferred to SO output at every rising SCLK edge.8/12L98239/12L9823APPLICATIONS INFORMATIONThe typical application diagram for parallel Input SPI control is shown in Figure 4.For higher current driving capability more outputs of the same kind can be paralleled. In this case the maximum flyback energy should not exceed the limit value for single output.The immunity of the circuit with respect to the transients at the output is verified during the characterization for Test Pulses 1, 2 and 3a, 3b, DIN40839 or ISO7637 part 3. The Test Pulses are coupled to the outputs with 200pF series capacitor. The correct function of the circuit with the Test Pulses coupled to the outputs is verified during the characterization for the typical application with R = 16Ω to 200Ω, L= 0 to 600mH loads. All outputs withstand testpulses without damage.10/12L982311/12L9823Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.The ST logo is a registered trademark of STMicroelectronics®2003 STMicroelectronics - All Rights ReservedSTMicroelectronics GROUP OF COMPANIESAustralia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.12/12。

系统MD5参考表

上海政府版XP: md5: 2637e695f43329fc9d66feceee44bf1fSHA1: 45718f99e50457be8077199aabacb2eaa9738484RCR: 0x328A5807北京政府版XP: md5: 81d7887a2f2cba696defdfc75dac54b4SHA1: 10b0170a3e0e82af71a45f29da50f3a136ed8d1aCRC : 0x328A5807广州政府版XP: md5: 25acfbc66f65098b68d6465b9705257bSHA1: 77b547767ac68049b9b2ee8e4ead54a42eb20d31电脑疯子版XP: md5: f455f9a787b620aca7ac89ab47574919SHA1: c0addd927b5d1f93dce9c455fd6b26eac7391be9CRC: 0x68B67EF0原版XP_SP3 系统文件: zh-hans_windows_xp_professional_with_service_pack_3_x86_cd_vl_x14-74070.iso 大小: 630237184 字节修改时间: 2008年7月20日, 20:52:58MD5: E74D72F3D90456003E9E02BA0FB7DA61SHA1: D142469D0C3953D8E4A6A490A58052EF52837F0FWindows Vista x86 简体中文旗舰版容量：2.43GB（2,613,229,568 字节）MD5 4AC79C50B11BCB2F4FA6A5660084ED748BCA7254Windows Vista x64简体中文旗舰版容量：3.29GB（3,536,730,112 字节）MD5 4B7ED66850BB34C818EB282DCFB60C622B411C10番茄花园作品文件: Tomato GHOSTXP_SP3_V1.2.iso大小: 728238080 字节修改时间: 星期二2008年7月15日, 19:54:12MD5: B511E7D9C0092A21427860D7ED59756DSHA1: 406489F3A15AB75240D200B27D0B36B3109C0F8DCRC32: 922FE153======================番茄花园Windows XP Pro SP2 免激活终结版文件: TOMA TO_WINXP_SP2.iso大小: 723218432 字节修改时间: 2008年4月16日, 10:08:15MD5: C0AFF8D48F92AE29A429DE36E4204B44SHA1: DED77E7E31534812BE7611F99C55E749723225A7CRC32: 547C57B3======================番茄花园Windows XP Pro SP3 V 1.2文件: TomatoWinXP_SP3_V1.2.iso大小: 724473856 字节修改时间: 星期一2008年7月21日, 16:22:40MD5: 4044D8AB0A76E9D1E9D72104BFF33A44SHA1: 7E8B4FFB090D41603799570D6461405C45D8ADDB CRC32: 5941DB04======================番茄花园Windows XP Pro SP3 V 1.21文件: TomatoWinXP_SP3_V1.21.iso大小: 719345664 字节修改时间: 2008年8月9日, 23:54:13MD5: B78DD03B3B3934623C0E750DC1779373SHA1: 2620951873387E84176AD4984AB5B07C2AF42300 CRC32: 14651875电脑公司特别版md5ghostxp_sp2电脑公司特别版_v5.0文件大小702.77 mbmd5值:fc14305d4f48ba317f30ccab462bcc85ghostxp_sp2电脑公司特别版_5.1文件大小：693 mbmd5值:ead1240937ecf61e38ea0483335c9e31ghostxp_sp2电脑公司特别版_v5.5文件大小：674mb (706,820,096 字节)md5值：7806c5e06b1b6dc138c251cce1345ca92006-05-17ghostxp_sp2电脑公司特别版_v6.0文件大小：694mb (728,733,696 字节)md5值:5b8a9801a985c0f20965433a8edf2aaa2006-07-07（时间修正）ghostxp_sp2电脑公司特别版_7.0文件大小：698 mb (732,497,920 字节)md5值:05fefed54a9865aa54f0c782ad048128 2006-11-28（时间修正）ghostxp_sp2电脑公司特别版_v7.1文件大小：1.24gb (1,340,805,120 字节)md5值:5bc7d0d031df47017a968b1183a6a53b 2007-01-09（时间修正）ghostxp_sp2电脑公司特别版v7.2文件大小：695 mb (729,335,808 字节)md5值:31f36d007b69b3366f01ddbc9c0708ab 2007-02-02（时间修正）ghostxp_sp2电脑公司特别版_v7.3文件大小：690 mb（723951616字节）md5值:9310e1bae25a3d11a404d2eae2b2577a 2007-03-16（时间修正）ghostxp_sp2电脑公司特别版_v7.5文件大小：693 mb (727,246,848 字节)md5值:421c882c1ac047a6ac5698403bc79fce 2007-05-24（时间修正）ghostxp_sp2电脑公司特别版_7.6文件大小：689 mb (723,208,192 字节)md5值:2aace077d66eb0b41ee039a4dbd704ee 2007-07-19（时间修正）ghostxp_sp2电脑公司特别版v7.7文件大小：693 mb (726,917,120 字节)md5值:4bc64808c830e1869508ae2556d8f457 2007-9-27（时间修正）ghostxp_sp2电脑公司特别版_8.0文件大小：681 mb (714,196,992 字节)md5值:7219990f8ba9771094313dcd354cf6f9ghostxp_sp2电脑公司特别版_v8.5文件大小：683 mb (716,609,536 字节)md5值:0c32b8879c8df85a2db7d8983eb614f9ghostxp_sp3电脑公司特别版_v9.0文件大小：698 mb (732,952,576 字节)md5值:5c0ddb2d0e5ab6074d9f1274c315d55aghostxp_sp3电脑公司特别版_v9.1文件大小：698 mb (731,908,096 字节)md5值:6bdb80657e4df9ec8f77a19993fda011ghostxp_sp3电脑公司特别版_v9.2文件大小：686 mb (719,568,896 字节)md5值:64c96ef5db5b82719d540ec0706cdd9f2008年07月（绝版）深度完美精简版MD5Deepin XP Lite 完美精简版V5.2 MD5:59cabc783dd7cb17fac5ba51192ddaf4Deepin XP V5.3 深度一周年纪念正式版MD5:720a1b92bc86f137b1ea6c461b29ae16Deepin XP V5.3 SP 会员特别版本MD5:E4A40617F094526B313A3AD8AAB5B7F8Deepin XP Lite 完美精简版V5.4 MD5:4db50b0e848effa5638f30b5720ad7e2Deepin XP Lite 完美精简版V5.5 MD5:0d543e173535e6378bf4c451f831a2b3Deepin XP Lite 完美精简版V5.5SP MD5:d1aaedbca5b36d505e4adc3b45fb365eDeepin XP Lite 完美精简版V5.6 MD5:88077258d5164cb5e2c7c8799bf01101Deepin XP Lite 完美精简版V5.7 MD5:15c6a4de45d209b5ca7297e96705c2a5DeepinXP Lite V5.7RC1 MD5:a217a7ffb3316d91da61cf1cb70b7769Deepin XP Lite V5.8测试版MD5:4c26650bfe306156cd8b2eea276188e7Deepin XP Lite 完美精简版V5.8 MD5:64633d4f52b19076153139174c692814Deepin XP Lite 完美精简版V5.9 MD5:13401ab29fd2dcf09ac6d135396b8c9fDeepin XP Lite 完美精简版V5.10 MD5:c231763f1fe5110889e60d9d28fd2d57Deepin XP Lite 完美精简版V5.10 珍藏版MD5:9FBEED219D9CB3AAE19FA20EBDD4A4C2 Deepin XP Lite V6.0RC1测试版MD5:652e0afd428c7f032cb980b0f13e2054Deepin XP Lite 完美精简版V6.1 测试版MD5:2d14703338063f361de3fda11ae84565Deepin XP Lite 完美精简版V6.2 大盘MD5:b9b026b33d58809fc4cd8e61d75e0640小盘MD5:6f035a9e4c7295ec2c64d2d5b1eee879DeepinXP PLUS 完整安装版MD5：49a8628c97da4376154faa099486ce4aDeepinXP PLUS V2深度GHOST系列MD5GHOST XP 快速装机版V2.0 MD5:58afb7f2986e51d625e30cbc079f02b2GHOST XP 快速装机版V3.0 MD5:66710870f56f8a2bcc831acfb4be11d5GHOSTXP八分钟快速装机版V3.5 [NTFS版]MD5:985D24BA81B7A5120BC58F3941BC075C[FA T32版]MD5BD3C28205FE9E502D40198A671BF497GHOST XP 电脑城装机板V4.0 [NTFS版]MD5:c0316e28d09dbceead40f5db1c14f86c[FA T32版]MD5:b895524934444e0d40fe54a79c0dbf5cGHOST XP SP2 纯净版V5.10 MD5:28f2b0f680be91a92717e6d930a279d0GHOSTXP V6.0 快速装机个人版(NTFS格式) MD5:f0a54c1968523f08d88f19fee7de50e6GHOSTXP V6.5 快速装机个人版[NTFS版]MD5:db4d962fd7b559e883f4b8a8c6208056[FA T32版]MD:7445f73fe1f9925c084d10c65a4d5f19GHOST XP SP2 快速装机专业版V7.0 MD5:b5e0c503a2de5f33a59c72f12c033286GHOST XP SP3 快速装机专业版V8.0 官方发布帖未提供MD5值GHOST XP SP3 快速装机专业版V8.1 [NTFS版]MD5:e3da09c618a341736b21ecfa94c30c2a[FA T32版]MD5:98976eaacf6309c4d159960daf5ce68cGHOST XP SP3 快速装机专业版V9.0 （NTFS格式）MD5：bb8699833407a421b5330e683931e997GHOSTXPSP3 快速装机专业版V9.0修正版[NTFS版]MD5:d3318532efda2aac5a15e789da541999 [FA T32版]MD5:326aaa362f6023e413561cc6b3c19f3cGHOST XP SP3 快速装机专业版V9.0 (二次修正版本) MD5:d3318532efda2aac5a15e789da541999深度网吧版系列MD5Deepin Windows XP SP2 网吧特制版V2 官方发布帖未提供MD5值Deepin XP SP2 ★网吧特制版V2.01★MD5:53d8e715a08cbddbae14814fadb6e7d9深度技术网吧特制版V3.2 MD5:a1b4c7ce585b3d76375618c4697e6f69深度技术网吧专用版V3测试版官方发布帖未提供MD5值深度技术网吧专用Windows XP SP3 V4.0 测试版MD5:675408BF9B29D77251A7242EE487B794GDH作品GV系列MD5【深度GV1.0】gdh精简版vista MD5:41c5d07069e5e72840fef5a8a8bd66ff【深度GV1.1】gdh精简版vista(优化免激活) MD5:915ea15b6f608792ccdad4d59b68f7eb 深度GV1.1.iso(895MB)MD5:3484e79e831c45157be990fe1c50e9cb 深度GV1.1 CD1.iso(691MB)两个版本DVD版与双CD版MD5:da5bafb0ca77f20f5e748d76b38974e5 深度GV1.1 CD2.iso(202MB)【深度GV2.0】gdh优化版Vista MD5:ec03ec6430ef18d255bbd0fe05c36661 深度GV2.0.isoMD5:9d615b5a84a6e2aecc64224073bc4737 深度GV2.0 CD1.iso两个版本DVD版与双CD版MD5:ff80074530411d8bfa32833e934753d8 深度GV2.0 CD2.iso【深度GV1.2】精简优化版vista MD5:a096fed9f2fcf9df71227279188329c8【深度GV1.3】精简优化版Vista Sp1正式版MD5:5949e5e6d0d476eb91ce0dab4c72b85b深度白金系列MD5windows XP 深度白金珍藏版V5.7 DPP_5.7.1_F32.iso 76b2556f4dd962a30683414995f92943深度白金珍藏版作为官方作品发布DPP_5.7.1_NTFS.iso 53dff782e11c2708751155656c4a81f4典藏版为小兵个人作品DPH_5.7.1_F32.iso e61d39acaebd7698c13ee1bf8f92a539Windows Vista ULTIMATE With SP1 精简版V2.1md5:676B529AC940E68C1C17AE4D3FA10E77下载：thunder://QUFodHRwOi8vZHgubHdrYi5jb20vdmlzdGEvWWxtRl9WaXN0YV9MaXRlXzIuMS9ZbG1GX1Zpc3 RhX0xpdGVfMi4xLmlzb1pa--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP3 纯净版Y6.0md5：AEC96811C5A582EE2389B706F0128168下载：thunder://QUFodHRwOi8vZHgubHdrYi5jb20vZ2hvc3QxL1lsbUZfR2hvc3RYUF9TUDNfWTYuMC9ZbG1GX0 dob3N0WFBfU1AzX1k2LjAuaXNvWlo=--------------------------------------------------------------------------------------------------雨林木风WinXP SP3 安装版YS8.0md5:88524D781055119EBD144EBE7117FBD0下载：thunder://QUFodHRwOi8vZHgubHdrYi5jb20vc2V0dXAvWWxtRl9YUFNQM19ZUzguMEYvWWxtRl9YUFNQ M19ZUzguMEYuaXNvWlo=--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP3 装机版YN9.9md5:CFCC949AFE0479AD82F36C77D1FE0983下载：thunder://QUFodHRwOi8vZHgubHdrYi5jb20vZ2hvc3QvWWxtRl9YUDNfWU45LjkvWWxtRl9YUDNfWU45L jkuaXNvWlo=--------------------------------------------------------------------------------------------------雨林木风装机版--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP2 豪华装机版YD2.0 NTFS 08年8月4日DVD文件: YlmF_XP2_DVD2.0.isoMD5: 6C06A521ECBC83F7920F84F33E173D5C--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP3 装机版YN9.6 NTFS 08年7月26日SP3文件:YlmF_XP3_YN9.6.isoMD5: AB768524572ABC410F049932B31EDE84--------------------------------------------------------------------------------------------------雨林木风Ghost Vista SP1 电脑公司装机版V1.0 NTFS 08年6月29日Vista版文件: YlmF_Vista_V1.0.isoMD5: DDAA34B1E90E3E50E7A8D943BD2ABEA6--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP3 装机版YN8.0 NTFS 08年6月19日SP3文件名：Ghost_XP3_YN8.0.isoMD5：14626F0822A9304EFFEF02FF0E059FD3--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP2 DVD豪华装机版NTFS NTFS 08年6月12日DVD 文件: YlmF_XP2_DVD.isoMD5: 6612F81CB1D00FABFD6890F449FAC5D0--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP2 装机版YN7.0 NTFS 08年4月30日三周年纪念版文件名：YlmF_XP_SP2_YN7.0.isoMD5：BF32CB1A1D98C2BE6377FB2498C1AC4F--------------------------------------------------------------------------------------------------Ghost XP SP2 联想OEM专版NTFS NTFS 08年3月10日联想OEM专版WinXP_Lenovo_Pro.isoMD5:BC3CCCD49B53A1B367C3BD8E58CB4740--------------------------------------------------------------------------------------------------雨林木风2008年度系统DVD 合集NTFS 08年2月1日2008年DVD合集YlmF_DVD_2008.ISOMD5：43b5e2ff6af4281e454f46bf90ceaba6--------------------------------------------------------------------------------------------------雨林木风Ghost WinXP2 2008 新春版NTFS NTFS 08年1月17日雨林木风Ghost XP SP2 2008新春版MD5: F8292FA1DA1D68E9B5595DAE06EB3D4B--------------------------------------------------------------------------------------------------雨林木风Ghost WinXP2 2008 贺岁版NTFS NTFS 07年12月29日YlmF_WinXP_2008.isoMD5:099D88ADD08BE7ED96BCB28EE4B2E555--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 经典怀旧版FA T32 07年12月7日经典怀旧版YlmF_XP2_Classic.isoMD5：AE27BF5EAF2B2D8DDDB9DA33E2A3A6AC--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YF6.0 FA T32 07年10月20日YlmF_XP2_YF6.0.isoMD5: 40C747AD16BE15A70AA21E65F5B251FC--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YF5.5 FA T32 07年9月30日YlmF_YF5.5.isoMD5: E85C07D4383C7EB541E51816DBAEE0D0--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YN5.0 NTFS 07年8月11日雨林木风Ghost Winxp2 装机版YN5.0MD5: 6739B302E63D64212AFD4A80FE065D65--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 网吧版YN1.0 NTFS 07年6月27日网吧版雨林木风Ghost Winxp2 网吧版YN1.0MD5: 166********F801AD267F2A0865CEFAF--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YF3.5 FA T32 07年5月22日YLMF_XP2装机版Y3.5.isoMD5: 56E0D760BFCDDE86BFCEB9672EA7AA27--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YN3.3 NTFS 07年4月27日二周年纪念版YlmF装机版YN3.3.isoMD5: D5AAC754C80FBA0EB83AF13E3020F5C6--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YN3.2 NTFS 07年4月6日YlmF_XP2_YN3.2.isoMD5: db865016e2e96d0dacbdce124127ab93--------------------------------------------------------------------------------------------------雨林木风Ghost WinXP2 Vista 美化版Y1.0 NTFS 07年3月3日美化版YlmF_XP2_Vista_Y1.0.isoMD5: 7ff2a04e7a59d022556f7aaf640424fa--------------------------------------------------------------------------------------------------雨林木风2007年度系统DVD 合集NTFS 07年1月18日2007年DVD合集YlmF_WinDVD1.0.isoMD5:a4bf860d4ec3ae691ad3c2f5424423ee--------------------------------------------------------------------------------------------------雨林木风Ghost Winxp2 装机版YF3.1 FA T32 06年12月27日YlmF_XP2_Y3.1.isoMD5:a274b9f8e8fa39741440d4cb1aff5941--------------------------------------------------------------------------------------------------雨林木风WINDOWS MCE VIP UE v1.0 NTFS 06年10月15日媒体中心版YlmGHOmce_v10.isoMD5:a128120c2697afb35df9a1d8f24fd561--------------------------------------------------------------------------------------------------雨林木风纯净版与精简版--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP3 纯净版YN5.5 NTFS 08年7月16日YlmF_GhostXP_SP3_Y5.5.isoMD5：1ec448fbaed15696d7c8945ba3396227--------------------------------------------------------------------------------------------------雨林木风Windows Vista ULTIMA TE SP1 精简版Y1.2 NTFS 08年6月18日Vista YlmF_Vista_Lite_1.2.isoMD5：4a0da54b5cc58891d51743e5ebb7fa3c--------------------------------------------------------------------------------------------------雨林木风Windows XP SP3 精简版Y1.1 NTFS 08年6月12日YlmF_XPSP3M_Y1.1.isoMD5：2cd998fa97f0775693450b74578c8858--------------------------------------------------------------------------------------------------雨林木风Ghost XP SP3 纯净版Y5.0 NTFS NTFS 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发酵乳后熟期间嗜热链球菌和保加利亚乳杆菌产乙醛特性

发酵乳后熟期间嗜热链球菌和保加利亚乳杆菌产乙醛特性白娜;于洁;王宏梅;乌仁图雅;秦艳婷;扎木苏;刘文俊;孟和毕力格;张和平【摘要】目的:分析嗜热链球菌和保加利亚乳杆菌在发酵乳后熟期间产乙醛特性,并研究乙醛合成与其关键调控基因表达量之间的关系.方法:以传统发酵乳制品中筛选出的具有优良发酵特性的嗜热链球菌和保加利亚乳杆菌为研究对象,将各试验菌株在复原全脂乳中进行单菌发酵,发酵结束后(pH4.5～4.6)于4℃冷藏后熟,测定48 h 内发酵乳中的乙醛含量;采用反转录定量PCR技术检测乙醛合成关键调控基因pdc、pdh、ald、ldh的表达特征.结果:6株嗜热链球菌产乙醛量介于2.59～14.53 μg/g 之间,6株保加利亚乳杆菌产乙醛量介于9.17～39.45 μg/g之间;乙醛合成量随着基因pdc、ald及pdh表达量的升高而增加,而与基因ldh的表达量呈负相关.结论:发酵乳后熟期间嗜热链球菌和保加利亚乳杆菌不同菌种、不同菌株乙醛产量差异显著,相同菌株在不同后熟时间产乙醛量差异明显,存在菌株特异性和时序变异性;调控基因pdc、pdh及ald具有促进乙醛合成的作用,基因ldh的表达不利于乙醛含量的积累.【期刊名称】《乳业科学与技术》【年(卷),期】2014(037)001【总页数】5页(P1-5)【关键词】发酵乳;嗜热链球菌;保加利亚乳杆菌;乙醛;调控基因【作者】白娜;于洁;王宏梅;乌仁图雅;秦艳婷;扎木苏;刘文俊;孟和毕力格;张和平【作者单位】内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018;内蒙古农业大学乳品生物技术与工程教育部重点实验室,内蒙古呼和浩特 010018【正文语种】中文【中图分类】TS252.54根据2010年我国发酵乳国家标准GB19302―2010《食品安全国家标准：发酵乳》定义，发酵乳（fermented milk）是以生牛（羊）乳或乳粉为原料，经杀菌、发酵后制成pH值较低的产品[1]。

012年1月1日星期日第8128期《江门日报》A版差错责任考核...

2012年1月1日星期日第8128期《江门日报》A版差错责任考核登记一、出版前差错版别：A04版1.《金正恩被推举为朝鲜人民军最高司令官》第4栏倒数第3行中的“金正日于去年12月17日逝世。

”改为“金正日于2011年12月17日逝世。

”“去”改为“2011”。

差错性质：一般差错第一发现及修改者：余伟健责任人：李小龙申诉：今年是2012年，2011年不是去年？考核结果：不扣（电头是31日）2.《20座开平碉楼被认养》（转版）第4段倒数第1行中的“活化和升华碉楼文化方面作出努力”。

改为“活化和升华碉楼文化方面作出努力。

”把句号移到引号里面。

差错性质：一般差错第一发现及修改者：余伟健责任人：李斌、周华东、徐铃静考核结果：扣版别：A05版《虎爸狼妈养成记》第2栏倒数第5行中的“太级功夫里常用的以柔克刚，”改为“太极功夫里常用的以柔克刚，”“级”改为“极”。

差错性质：一般差错第一发现及修改者：余伟健责任人：宁园考核结果：扣二、出版后差错版别：A07版《随手拍照解救乞讨儿童》第2栏第2行中的“共同参与解救行动。

”后面多出了左双引号和句号（“。

）应删去。

差错性质：一般差错第一发现人：蹇世民责任人：程军锋考核结果：扣版别：A08版《小皇帝过生日状态好》第3栏倒数第5行中的“在他的带领下打出了一波有一波的反击高潮。

”应为“在他的带领下打出了一波又一波的反击高潮。

”“有“改为”又“。

差错性质：一般差错第一发现人：蹇世民责任人：李小龙考核结果：扣2012年1月2日星期一第8129期《江门日报》A版差错责任考核登记一、出版前差错版别：A01版《慈善捐赠表彰对象范围扩大》第4栏第4行中的“全市各界和海外侨胞、”改为“全市各界和海外华人华侨、”差错性质：一般差错第一发现及修改者：余伟健责任人：韩玲群、徐铃静考核结果：扣版别：A02版《书法家义写春联赠市民》第1栏倒数第6行中的“近400幅春联”改为“近400副春联”。

“幅”改为“副”。

BT8123 规格书

BT8123规格书文件编号:VS_11061501版本：V1.0日期： 2013-7-12深圳市百泰实业有限公司地址: 深圳宝安区西乡镇固戍村榆盛工业区6栋6楼东TEL: +86-755-27491316/26/36FAX: +86-755-27491346BT8123—恒定5.0W输出功率、FM无干扰F类音频功率放大器一概述BT8123是一款F类音频功率放大器。

内置的BOOST功率模块在4Ω负载时,5W和3.7W两个功率点之间可选。

当BOOST模块在3.7W的情况下，4Ω的负载时功率恒定,并通过MUCH使能端的控制,BOOST模块可以单独提供最高可达2A的电流输出;当BOOST模块在5W的情况下，4Ω的负载时功率恒定.AB类D类可切换模式的设计,最大限度的减少音频子系统中功放对FM的干扰. BT8123在锂电池的供电电压范围内提供了极致的功率输出,使得BT8123成为便携式音箱设备特别是扩音器产品的最优选择. BT8123的全差分架构和极高的PSRR有效地提高了BT8123对RF噪声的抑制能力。

无需滤波器的PWM调制结构及内置的BOOST功率选择模块,尽可能的减少了外围器件,另外BT8123内置了过流保护,短路保护和过热保护,有效的保护芯片在异常的工作条件下不被损坏。

BT8123提供了纤小的的SOP16L封装形式供客户选择,其额定的工作温度范围为-40℃至85℃二特点● 内置BOOST模块，AB类D类集成的特殊F类结构● 输出功率PO at 10% THD+N, VIN = 3.7VRL = 4Ω 3.70W(BOOST 功率值为3.7W)RL = 4Ω 5.00W(BOOST 功率值为5W )● 优异的"噼噗-咔嗒"(pop-noise)杂音抑制能力● 工作电压范围：2.5V到5.0V● MUCH功能:功放静音同时,PVDD可输出最高2A的电流● 无需滤波的Class-D结构● 72%的效率● 高电源抑制比(PSRR)：在217Hz下为70dB● 启动时间 (260ms)● 静态电流 (10mA)● 低关断电流 (＜0.1µA)● 过流保护，短路保护和过热保护● 符合Rohs标准的无铅封装三管脚排列图四极限参数五推荐工作参数六电气参数七工作特性八应用线路图九典型特征曲线(TA=25°C, RL = 4Ω,ΑΒD=1，VMODE=1(D类模式除非特殊说明)类模式除非特殊说明)(TA=25°C, RL=4Ω,ABD=0(AB去耦电容(Cs)BT8123是一款高性能音频放大器，电源端需要加适当的电源供电去耦电容来确保其高效率和最佳的总谐波失真。

AD812中文资料

Model Conditions OUTPUT CHARACTERISTICS Output Voltage Swing Output Current Short Circuit Current Output Resistance MATCHING CHARACTERISTICS Dynamic Crosstalk Gain Flatness Match DC Input offset Voltage –Input Bias Current POWER SUPPLY Operating Range Quiescent Current G = +2, RF = 715 Ω VIN = 2 V Open-Loop RL = 150 Ω, TMIN –TMAX RL = 1 kΩ, TMIN –TMAX VS ±5 V ± 15 V ±5 V ± 15 V ± 15 V ± 15 V Min 3.5 13.6 30 40 AD812A Typ 3.8 14.0 40 50 100 15 Max Units ±V ±V mA mA mA Ω
元器件交易网
AD812–SPECIFICATIONS
Dual Supply (@ T = +25؇C, R = 150 ⍀, unless otherwise noted)
A L
Model Conditions DYNAMIC PERFORMANCE –3 dB Bandwidth G = +2, No Peaking Gain = +1 G = +2 G = +2, RL = 1 kΩ 20 V Step G = –1, RL = 1 kΩ G = –1, RL = 1 kΩ VO = 3 V Step VO = 10 V Step fC = 1 MHz, RL = 1 kΩ f = 10 kHz f = 10 kHz, +In f = 10 kHz, –In NTSC, G = +2, RL = 150 Ω VS ±5 V ± 15 V ± 15 V ±5 V ± 15 V ±5 V ± 15 V ±5 V ± 15 V ±5 V ± 15 V ± 15 V ± 5 V, ± 15 V ± 5 V, ± 15 V ± 5 V, ± 15 V ±5 V ± 15 V ±5 V ± 15 V ± 5 V, ± 15 V TMIN –TMAX Offset Drift –Input Bias Current TMIN –T MAX +Input Bias Current Open-Loop Voltage Gain TMIN –T MAX VO = ± 2.5 V, RL = 150 Ω TMIN –T MAX VO = ± 10 V, RL = 1 kΩ TMIN –T MAX VO = ± 2.5 V, RL = 150 Ω TMIN –T MAX VO = ± 10 V, RL = 1 kΩ TMIN –T MAX +Input –Input +Input ± 5 V, ± 15 V ± 5 V, ± 15 V ± 5 V, ± 15 V ±5 V ± 15 V ±5 V ± 15 V 68 69 76 75 350 270 450 370 Min 50 75 100 20 25 275 1400

3B SCIENTIFIC 双极管芯片物理实验用具说明书

3B SCIENTIFIC ® PHYSICSDual Pole Tube U8482360Instruction Sheet10/10 LT/ALF1 Anode terminal2 Sockets for heater voltage3 Base4 Getter5 Dual pole tube1. Safety InstructionsWhen the instrument is used in accordance with the instructions and regulations, safe operation is ensured. However, safety is not guaranteed if the instrument has been treated inappropriately or carelessly.If there is reason to believe that safe operation is no longer possible (e.g., if there is visible damage), the instrument must not be used, or if in use it must be taken out of service immediately.Excessive voltages or currents or an incorrect cathode temperature can damage the tube irreparably.• Keep within the specified operatingparameters.• Do not apply a heater voltage greater than 5 V. When the tube is being operated, there may be dangerously high voltages in the area of the connections. • Only use safety experiment leads for theconnections.• Only make connections when the voltagesupply is switched off.The instrument is not suitable for student experiments.2. DescriptionThe dual pole tube is used for demonstrating the Edison effect, for confirming the Richardson equation, and for measuring the current/voltage characteristic (I A /U A curve) of a diode.The electrode system, consisting of a tungsten cathode and a cylindrical anode of sheet nickel, is housed in an evacuated glass bulb. The heating current for the tungsten cathode can be varied within the electron-emitting range. The anode connection is safe to handle and is mechanically fixed to the glass bulb.The tube also incorporates another system (the getter), which serves to generate a high vacuum during the manufacture of the tube, and is not relevant to the functioning of the instrument.3. Equipment supplied1 Dual pole tube1 Tube base with safety connection sockets 1 Instruction sheet4. Technical dataCathode area: approx. 32 mm² Max. anode voltage: 400 V Heater voltage: 1.5 – 5 V Heater current: 2 – 5 A Tube dimensions: approx. 120×45 mm² Overall dimensions: approx. 170x105x230mm³ Weight: approx. 370 g5. Operation•Carefully push the tube into the two middlesockets of the base and connect the anode lead to one of the two red sockets, which are connected together internally.The remaining socket (1) allows an external connection to the anode of the tube.6. Sample experimentsFor carrying out the experiments, the following additional equipment is needed: 1 DC power supply, 500 V (230 V, 50/60 Hz) U33000-230 or 1 DC power supply, 500 V (115 V, 50/60 Hz)U33000-115 1 Digital multimeter U118091 1 Electroscope U853213016.1 Demonstration of the Edison effectIn this reproduction of a historic experiment, the Edison effect is observed by means of an electroscope connected to the anode.• Connect the circuit as shown in Fig. 1a/b.•Transfer the positive charge of a rubbed glassrod to the anode and electroscope.The charge remains present until the cathode of the tube is activated by heating. The electron deficit is then neutralised by the electrons emittedfrom the cathode. The anode becomes discharged.Fig. 1a Circuit set-up for demonstrating the Edisoneffect using an electroscopeFig. 1b Circuit connection of the 500 V DC powersupply (U33000)In a second experiment the effect is demonstrated using a multimeter.• Connect the circuit as shown in Fig. 2a/b.The multimeter shows a current of about 85 µA (the “Edison current”), as the tungsten filament at a hightemperature emits electrons. Between the negative end of the heater coil and the anode there is a difference of +3 V, producing an electric field which accelerates theelectrons so that they reach the anode.Fig. 2a Circuit set-up for demonstrating the Edison effect using a multimeterFig. 2b Circuit connection of the 500 V DC powersupply (U33000)Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Germany • 3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • Technical amendments are possible 6.2 Measuring the current/voltage characteristic(I A /U A curve) of a diodeFigure 5 shows the different regions of a typical curve, which can be measured using two circuits. The cutoff region (Sp) and the current onset region (A) are measured by applying a negative anode voltage, which is progressively reduced up to the beginning of the space-charge region (R). This part of the measurement ends with U A = 0 V.• For the latter regions, connect the circuit asshown in Figures 3a/b.• Determine how the anode current I A dependson the anode voltage U A by decreasing the anode voltage step by step from -8 V to 0 V. • Plot the values of I A and U Aon a graph.Fig. 3a Circuit set-up for measuring the current onsetregionFig. 3b Circuit connection of the 500 V DC powersupply (U33000)The space-charge region (R) and the saturation region (S) of the curve are measured by applying a positive anode voltage that is varied over the range 0…250 V.• Connect the circuit as shown in Figures 4a/b. • Determine how the anode current I A dependson the anode voltage U A by raising the anode voltage step by step from 0 V to 250 V. • Plot the values of I A and U Aon a graph.Fig. 4a Circuit set-up for measuring the space-chargeand saturation regionsFig. 4b Circuit connection of the 500 V DC powersupply (U33000))Fig. 5Current/voltage characteristic of a diode。

螺纹测量公差与标准

第一部分基础知识第一章度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。

1、公制计量：（10进制）1m =100 cm=1000 mm1 cm012345678910 mm2、英制计量：（8进制）×25.4 =9.52''1英寸=8英分1英寸=25.4 mm3/81/163/165/167/169/1611/1613/1615/1601/81/43/81/25/83/47/8 1 inch以下的产品用番号来表示其称呼径，如：''3、1/44#，5#，6#，7#，8#，10#，12#第二章螺纹一、螺纹是一种在固体外表面或内表面的截面上，有均匀螺旋线凸起的形状。

根据其结构特点和用途可分为三大类：（一）、普通螺纹：牙形为三角形，用于连接或紧固零件。

普通螺纹按螺距分为粗牙和细牙螺纹两种，细牙螺纹的连接强度较高。

（二）、传动螺纹：牙形有梯形、矩形、锯形及三角形等。

（三）、密封螺纹：用于密封连接，主要是管用螺纹、锥螺纹与锥管螺纹。

二、螺纹配合等级：螺纹配合是旋合螺纹之间松或紧的大小，配合的等级是作用在内外螺纹上偏差和公差的规定组合。

（一）、对统一英制螺纹，外螺纹有三种螺纹等级：1A、2A和3A级，内螺纹有三种等级：1B、2B和3B级，全部都是间隙配合。

等级数字越高，配合越紧。

在英制螺纹中，偏差仅规定1A和2A级，3A级的偏差为零，而且1A和2A级的等级偏差是相等的。

等级数目越大公差越小，如图所示：1B2B3B内螺纹基本中径3A外螺纹2A1A1、1A和1B级，非常松的公差等级，其适用于内外螺纹的允差配合。

2、2A和2B级，是英制系列机械紧固件规定最通用的螺纹公差等级。

3、3A和3B级，旋合形成最紧的配合，适用于公差紧的紧固件，用于安全性的关键设计。

电子管代换

6N1 ECC85,6AQ8,6H1л6N4 12AX7,ECC83,E83CC,7729,CV4004,B759,CV4926N10 12AU7,ECC82,E82CC,7316,CV4003,5814,B749,61896N11 6DJ8,E88CC,ECC88,6922,ECC189,6J5,6H11N,7308,El88CC 6N8P 6SN7,B65,5692,33S30,CV1988,6H8C,6HM,6F8G,16336H8C 6HM,6F8G,1633,9002,6C8G6J8P 6SJ7,6267,EF86,12AT7ECC81,CV4024,6201,B739,A2900,2025,ECC80156N9P 6SL7,5691,33S29,VT2296F2 ECF82,6U86N2 6H2л功率用管代换表6P3P 6L6GC,5881 6P6P 6V6GT,5S2,KT63EL34 6CA7,KT66,7027A6P14 EL84,6BQ5,6П14П6N5P 6080,6AS7,6H5CFU-5 805FU-7 807,1625FU-13 813FU-46 06146BFU-17FU-605 6T517092 6T50FU811 811AFU812 812AGL-211 211300B WE300B,NL50,4300BKT88 6550,NT99,KT1002A3 2A3S845 845A6360,TY-7整流电子管代换及特性表型号代换型号Bb2V UfV/I I2L(mA)最大型式5U4G 5Z3P,U52 500V 5V/3A 2500 直热式5Y3GT 522P 350V 5V/2A 125 直热式5R4GY 22S2C 900V 5V/2A 150 直热式5T4 450V 5V/3A 250A 直热式6Z4 350V 6.3V/0.5A 50 直热式6Z5 6X5 230V 6.3V/0.8A 60 旁热式6X4 325V 6.3V/0.5A 70 旁热式5Z4P 5Z4 400V 5V/2A 125 旁热式5AR4 GZ34 450V 5V/1.9A 250 旁热式5X4G 直热式双阳极二极管小功率全波整流氧化物阴极5Z3P 直热式双阳极二极管小功率全波整流5T4、5ц3C、CV1861、5R4GY、U52、CV1071、5V3、5AU4、5U4G氧化物阴极5Z4P 旁热式双阳极二极管小功率全波整流*5B×1、*5ц4C，GZ30、CV2748、5Z4G/GT 氧化物阴极5Z1P 直热式双阳极二极管小功率全波整流氧化物阴极5Z2P 直热式双阳极二极管小功率全波整流5W4、5Y3G、80、U50 氧化物阴极5Z8P 旁热式双阳极二极管全波整流*5ц8C 氧化物阴极5Z9P 旁热式双阳极二极管全波整流*5ц9C 氧化物阴极6Z4 旁热式双阳极二极管全波整流*6ц4П、6B×4、6×4、6Z31 共阴极6Z5P 旁热式双阳极二极管小功率全波整流*6ц5C 共阴极6H2 旁热式双阳极二极管检波、整流*6×2П、6AL5、C 氧化物阴极6C1 旁热式三极管宽带电压放大*6C1П、CV664、9002 氧化物阴极6C3 旁热式三极管宽带电压放大*6C3П 阴地三极管6C4 旁热式三极管宽带电压放大*6C4П 栅地三极管6C5P 旁热式三极管低频电压放大6C5GT、*6C5C、6C5 、CV1067、L63氧化物阴极6C6B 旁热式三极管低频电压放大5703、CV3917、*6C6Ь 氧化物阴极6C7B 旁热式三极管低频电压放大*6C7Ь 氧化物阴极6C12 旁热式三极管宽带电压放大EC88、5842 高S、低N6C31B-Q 旁热式三极管电压放大*6C31Ь-B 氧化物阴极6C32B-Q 旁热式三极管电压放大*6C32Ь-B 遥截止三极管6N1 旁热式双三极管低频电压放大*6H1П、6AQ8、AA61、ECC40/82 氧化物阴极6N2 旁热式双三极管低频电压放大*6H2П、6AX7、6AV7、ECC41 氧化物阴极6N3 旁热式双三极管低频电压放大*6H3П、6A8Q、2C51、ECC42 氧化物阴极6N4 旁热式双三极管低噪声电压放大ECC83、12A×7 高μ、低N6N5P 旁热式双三极管低频功率放大*6H13C、6AS7、CV2523、6NS7G/GT 低Ri6N6（T）旁热式双三极管低频电压放大*6H6П、E182CC、12BH7 氧化物阴极6N7P 旁热式双三极管低频功率放大6H7、*H7C、6N7/G/GT 共阴极6N8P 旁热式双三极管低频电压放大*6H8C*6H8M、6SN7、6F8G、CV181、QB65、ECC32 氧化物阴极6N9P 旁热式双三极管低频电压放大*6H9C、6SL7、ECC35、6SC7、6CY7 高μ6N10 旁热式双三极管低频电压放大*6H10M、12AV7A、E82CC、CV491 氧化物阴极6N11 旁热式双三极管宽带电压放大*6H23П、6DJ8、ECC84、E88CC、6922、CV2492 高S、低RI、N6N12P 旁热式双三极管低频电压放大*6H12C、TS229、5687 氧化物阴极6N13P 旁热式双三极管低频功率放大*6H13C、6AS7、CV2523、6NS7G/GT 低内阻6N15 旁热式双三极管低频电压放大*6H15П、6J6WA、6CC31、CV858 共阴极6N16B 旁热式双三极管低频电压放大氧化物阴极6N17B 旁热式双三极管低频电压放大*6H17Ь、6112、CV5007 氧化物阴极6N21B-Q 旁热式双三极管低频电压放大氧化物阴极6N23 旁热式双三极管低频电压放大6DJ8、ECC88、PCC88 高μ低N6J1 旁热锐止五极管宽带电压放大*6ж1П、6AK5、6BC5、EF40、EF95、CV850 高频管6J1B 锐截止五极管宽带电压放大*6ж1Ь、CV3929、61489、CK5702/7083 旁热式阴极6J2 锐截止五极管宽带电压放大*6ж2П、6AS6、CV2522、EF11/732、CV4011 旁热式阴极6J2B 锐截止五极管宽带电压放大*6ж2Ь、CK5639 旁热式阴极6J3 锐截止四极管宽带电压放大*6ж3П、EF96、CV848、6BC6、6AG5 束射四极管6J4 锐截止五极管宽带电压放大*6ж4、6136、6BX6、6AC7、EF94 旁热式阴极6J4P 锐截止五极管宽带电压放大*6ж4C、CV849、1852 旁热式阴极6J5 锐截止高频管宽带电压放大*6ж5П、EF80、CV2521、6F36、6AH6 高S、束射四极管6J7 旁热式阴极五极管低频电压放大6*7 、OM5C、KTW61、EF37A、W310A、57、STR4141、低噪声N6J8 锐截止五极管低频电压放大CV2901、6SJ7、6CF8、6267、EF16、EF86、2729 低噪声N6J8P 锐截止五极管宽带电压放大*6ж8C、5693、EF6、EBC3、CV592 旁热式阴极6J9 锐截止五极管宽带电压放大*6ж9П、EF861 旁热式阴极6J20 锐截止五极管宽带电压放大*6ж20П 空间电荷栅6J23 高互导双五极管宽带电压放大*6ж23П 阴极框架栅6J23B-Q 锐截止五极管宽带电压放大*6ж23B-K 低振动噪声12J1S 锐截止五极管小功率放大*12ж1л 氧化物阴极6K1B 遥截止五极管宽带电压放大*6K16K3P遥截止五极管宽带电压放大*6K3、6SK7、6K7、KTZ63、CV1074、6D6、6SG7 旁热式阴极6K4 遥截止五极管宽带电压放大*6K4П、6BA6、6DA6、EF89/93、5749、6K5 旁热式阴极6K5 遥截止五极管宽带电压放大同6K4 旁热式阴极12K3P 遥截止五极管宽带电压放大12K3、12SK7/GT 旁热式阴极2P2 输出四极管低频功率放大2П2П、DL92、1S4T、1L33、1L34 直热式阴极2P3 束射四极管低频功率放大3A4、1662、CV807、DL93 直热式阴极2P19B 五极管功率放大直热式阴极2P29 直热式五极管功率放大*2、*2П29л 氧化物阴极4P1S 直热式阴极功率放大*4П1л、4L2D 五极管6P1 束射四极管低频功率放大*6П1П、6AQ5、6BW6、6L31、EL14、90 旁热式阴极6P3P 束射四极管低频功率放大*6П3C、*6л6C、6L6、6L6G/GT、1614、1619、1622 同型：1631、6TT3C6P4P 束射四极管低频功率放大旁热式阴极6P6P 旁热式束射四极管低频功率放大*6П2、*6П6C、6Φ6、1611、1613、1621、6K6、CV509、6V6GT、CV510、CV1912、CV511、6N6C、KT636P9P 旁热式五极管宽带功率放大*6П9C、CV569 氧化物阴极6P13P 束射四极管低频功率放大*6П13C（旁热）旁热式阴极6P14P 旁热式五极管宽带功率放大*6П14П、6BQ5、N709、EL84、CV2975、7320、6L40 氧化物阴极6P15P 旁热式五极管低频功率放大6CH6、6CW5、EL180、EL821、CV2127、12BY7A 氧化物阴极6P25B 束射四极管低频功率放大*6П25Ь、EL71、5902 氧化物阴极6P30B-Q 束射四极管低频功率放大*6П30Ь-B（旁热）氧化物阴极6P31B-Q 束射四极管低频功率放大*6П31Ь-B（旁热）氧化物阴极13P1P 输出五极管低频功率放大*13П1C 旁热式阴极6S6 高S 五极管电压/功率放大*6Э1П（旁热）氧化物阴极6T1 高频双四极管推挽输出QM322、5656 旁热式阴极6A2 七极电子管T UNER 变频CV453、EK90、X77、*6A2П、6BE5、5750 旁热式阴极6F1 三极-五极管变频/电压放大*6Φ1П、6BL8、6C16 旁热式阴极6F2 三极-五极管变频/电压放大6Φ2П、6U8、6GH、CV5065、ECF82、6BL8 旁热式阴极6G2P 双二极-三极管检波、电压放大*6Γ2、6SQ7、6SQ7GT/G 旁热式阴极WE300B 直热式三极管功率放大300B、4300A 古典式低内阻FU-5 直热式三极管低频功率放大T100-1、RK57、ML714、NU-150、CV2622、CV2768 F123A、GL805、HF150、CV25FU-7 旁热式四极管大S 功率放大QV05-25、RK39、HY-61、QE06-50、CV124、807 5B/250A、807V、5S1FU-13 直热束射四极管功率放大*гY-13、813、4B13 TT10、QY2-100、QB2、250、CV278、4T100 CV1927、3874A、5C/100AFU-15 直热束射五极管中功率放大*гY-15 氧化物热子FU-17 双束射四极管中功率放大*гY-17、CV3517、6360、QQV03-10、QQV03/12 旁热式阴极FU-25 旁热束射四极管宽带功率放大1625、FD-25 氧化物阴极FU-29 双束射四极管宽带功率放大*гY-29、829B 旁热式阴极FU-31 直热式三极管宽带功率放大2T26、826、826“RCA” 钍钨阴极FU-32 双束射四极管宽带功率放大*гY-32、RS1019、TT20SRS4452、QQE03/20、P2-12 与FU-29类同FU-33 直热式三极管功率放大ES833、CV635、B142、3578、833A、5T33 钍钨阴极FU-46 旁热式五极管中功率放大QV06-20、P40、QE05/40、7212、6146、2B46 氧化物阴极FU-50 束射五极管宽带功率放大*гY-50、SRS552、P50/2 旁热式阴极FU-811 直热式三极管宽带功率放大*г-811、811A 钍钨阴极FU-250F 旁热式四极管宽带功率放大4C×250A 金属陶瓷型EL81 旁热式五极管功率放大6CJ6 氧化物阴极845 直热式三极管功率放大UV-845 Po≈100W6CY7 旁热式双二极管电压放大每组**管特性参数不同Rg< 100kΩ6CX8 旁热式三极管- 五极管电压放大和P-K 分割比6U9、6F2靓高S 18045 旁热式五极管小型功放作耳机放大有极佳表现Po> 1WFC4 旁热式三极管电压放大*гC4 金属陶瓷管6C22D 旁热式三极管电压放大5876 金属陶瓷管6550 旁热束射四极管功率放大KT88 氧化物阴极KT100 旁热束射四极管功率放大KT94 氧化物阴极PL81 旁热式五极管功率放大21A6 氧化物阴极EL34 旁热式五极管功率放大6CA7、KT66 氧化物阴极2A3 直热式三极管功率放大*2C4、AD1、6A3、6B4G、6C4C211 直热式三极管功率放大FD422 直热式五极管功率放大2E226C33C-B 旁热式三极管功率放大805胆管可更换FU-5,6N11可更换6922或者6DJ8,6P6P可更换6V6-GT。

AB-胶MSDS

四､急救措施吸入﹕ 1 移往通风处，若发生呼吸困难及时供给氧气，若发生呼吸停止时即施以人工呼吸。

2 立刻送医。

皮膚接觸﹕ 1 不要试着去移除受污染衣物以免皮肤受伤。

2 用肥皂水清洗被粘着部份，且很小心将粘着部份区域拉开，确勿使用机械方式拉开。

食入﹕1会发生粘住嘴巴。

最重要症狀及危害效應﹕ N/A對急救人員之防護﹕ N/A對醫師之提示﹕若不小心皮肤被粘住如手、衣服、粘住皮肤可用少量丁酮擦拭分离。

五､滅火措施適用滅火劑﹕二氧化碳、化学干粉、泡沫。

滅火時可能遭遇﹕习惯用抹布擦拭泄漏。

之特殊危害﹕特殊滅火程序﹕灭火人员应着全套呼吸装备以防止因热分解产生有毒气体。

消防人員之特殊防護裝備﹕六､泄漏處理方法個人應注意事項﹕视状况需要带戴防毒面具及穿防护衣。

環境注意事項﹕———清理方法﹕ 1 仅微量泄漏即以抹布擦干，立刻浸于水里。

2 大量泄漏时即时以水冲洗后，以刮刀将膜移除。

七､安全處置與儲存方法處置﹕儲存﹕ 1 储存温度＜25℃。

2 储存环境须干燥，远离热及火源及火花。

3 通风要良好。

十､AB胶安定性及反應性安定性﹕安定特殊狀況下可能之危害反應﹕特殊狀況下可能之危害反應﹕ N/A應避免之狀況﹕ N/A應避免之物質﹕避免与水、过氧化物、碱性物质接触，因这些物质会使胶水产生激烈聚合反应。

若大量能造成温度上升无法控制，且于密闭容器可能因反应激烈，产生容器内蓄压。

危害分解物﹕热手解会释放出危害物质如氮氧化物、一氧化碳、二氧化碳。

十一､AB胶毒性資料急毒性﹕吸入﹕ N/A皮膚﹕皮膚﹕N/A眼睛﹕N/A食入：N/AＬＤ５０（測試動物､暴露途徑） N/AＬＣ５０（測試動物､暴露途徑） N/A局部效應﹕ 1 口部接触：立即硬化导致嘴巴粘住。

2 皮肤接触：沾到皮肤很快硬化。

3 吸入：吸入过量蒸气会使呼吸道发炎，若暴露于40~60ppm下，可能有轻微流泪、鼻溢、视野模湖情形。

4 眼睛接触：眼部不小心接触过量接着剂蒸气，眼睛会有催泪现象，接着剂会粘住眼皮，虽不会粘住眼球但眼角膜受伤。

3843B中文资料

元器件交易网

TL284xB, TL384xB HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610A – AUGUST 2006 – REVISED SEPTEMBER 2006
FEATURES
• Low Start-Up Current (<0.5 mA) • Trimmed Oscillator Discharge Current • Current Mode Operation to 500 kHz • Automatic Feed-Forward Compensation • Latching PWM for Cycle-by-Cycle Current
TOP-SIDE MARKING TL2842BP TL2843BP TL2844BP TL2845BP 2842B
2843B
2844B
2845B
TL2842B
TL2843B
TL2844B
TL2845B TL3842BP TL3843BP TL3844BP TL3845BP 3842B
3843B
3844B
FUNCTIONAL BLOCK DIAGRAM
34 V NOM 5 GND
−+
UVLO
5-V VREF EN
8 VREF
RT/CT 4
2.5 V OSC
VREF Good
Logic
Internal Bias
6 OUTPUT
T
2 VFB COMP 1
Error Amplifier
+ −
2R
R
1V
ISENSE 3 A. Pin numbers shown are for the 8-pin D package.