MR2402FR中文资料

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RS PRO IPM 243F 电源电流计说明书

ENGLISHSpecifications:(All at 23℃±5℃,≦80% R.H.) Voltage:Function Range Accuracy*DCV 99.99V±(0.7% + 2dgt) 999.9VACV 99.99V ±(1.0% + 5dgt)50 ~ 500Hz 999.9VHFR ACV 99.99V 50 ~ 60Hz ±(1% + 5dgt)>60 ~ 400Hz ±(5% + 5dgt) 999.9V* DCV <1000dgt, add 6 dgt to the accuracy.ACV <1000dgt, add 3 dgt to the accuracy.Overload protection: 1000V rmsInput Impedance:3.5MΩ // <100pFAC Conversion Type: AC Conversions are ac-coupled, true RMS responding, calibrated to the RMS value of a sine wave input. Accuracies are given for sine wave at full scale and non-sine wave below half scale. For non-sine wave (50/60Hz) add the following Crest Factor corrections:For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.CF 3 @ 460V, 280A2 @ 690V,420AAC+DC V rms Accuracy: same as ACV spec. +DCV spec.Current:Function Range AccuracyDCA 99.99A ± (1.5% + 0.2A) 599.9A ± (1.5% + 5dgt)**ACA 0.10A ~ 99.99A 50 ~ 60Hz ± (1.5% + 5dgt) **>60 ~ 400Hz ± (2% + 5dgt) ** 599.9AHFR ACA 0.10A ~ 99.99A 50 ~ 60Hz ± (1.5% + 5dgt) **>60 ~ 400Hz ± (5% + 5dgt)** 599.9A** The measured value <1000dgt, add 5 dgt to the accuracy.Overload protection: 600A rmsPosition Error: ±1% of reading.AC Conversion Type and additional accuracy is same as AC Voltage.AC+DC A rms Accuracy: Same as ACA spec + DCA spec.－DCA affected by the temperature and the residual magnetism. Press HOLD key > 2sec to compensate it.Peak Hold: Peak MAX / Peak MINFunction Range AccuracyACV 140.0V± (3.0% + 15dgt) 1400VACA 140.0A± (3.0% + 15dgt) 850AOverload protection: 1000 V rms, 600 ArmsAccuracy defined for:Sine wave, ACV>5Vrms / ACA≧5Arms, Freq.50~400Hz.－Only suitable for the repetitive events.Frequency:Function Range AccuracyFrequency20.00 ~ 99.99Hz± (0.5% + 3dgt) 20.0 ~ 999.9Hz0.020 ~ 9.999KHzOverload protection: 1000 V rms, 600 A rmsSensitivity:10~100Vrms for AC 100V range10~100Arms for AC 100A range (>400Hz Unspecified)100~1000Vrms for AC 1000V range100~600/1000Arms for AC 600A/1000A range (>400Hz Unspecified) - Reading will be 0.0 for signals below 10.0 Hz.Total Harmonic Distortion:Function Range AccuracyACA /ACV 99.9% ± (3.0% + 10dgt)Harmonic distortion measurement:Harmonic order Range AccuracyH01 ~ H1299.9% ± (5% + 10dgt)H13 ~ H25 ± (10% + 10dgt)Overload protection: 1000 V rms, 600 A rms－If ACV<10Vrms or ACA <10Arms, it will display “rdy”.－If the fundamental frequency out of range 45 ~ 65Hz, it will display “out.F”.Inrush Current:Function Range AccuracyACA 99.99A ± (2.5% + 0.2A) 599.9A ± (2.5% + 5dgt)Overload protection: 1000 V rms, 600 A rmsAccuracy defined for:Sine wave, ACA≧10Arms, Freq. 50/60Hz- Integration time about 100msActive Power: Watt (DC/AC)Function Range AccuracyACW / DCW 9.999 kW**A,error×V,reading+V,error×A,reading 99.99 kW599.9KW** The measured value<1.000kW，add 10 dgt to the accuracy.Overload protection: 1000 V rms, 600 A rmsAccuracy defined for:ACW: Sine wave , ACV≧10 V rms, ACA≧5 Arms Freq. 50~60Hz, PF=1.00 DCW: DCV ≧10V , DCA ≧5 APower Factor:Function Range Accuracy*PF 1.00 ±5dgtOverload protection: 1000 V rms, 600 A rmsResistance & Continuity & Diode:Function Range AccuracyResistance 999.9 Ω± (1.0% + 5dgt) 9.999 kΩ± (1.0% + 3dgt) 99.99 kΩContinuity 999.9 Ω± (1.0% + 5dgt)Diode 0.40~ 0.80V ± 0.1VOverload protection: 1000V rmsMax. Test Current: Approx. 0.5mAMaximum Open Circuit Voltage for Ω, Continuity: Approximate 3V Maximum Open Circuit Voltage for diode: Approximate ±1.8V Continuity Threshold : ＜30Ω Beep ON, ＞100Ω Beep OFF Continuity Indicator: 2 KHz Tone BuzzerContinuity response time: < 100msCapacitance:Function Range AccuracyCapacitance 3.999 μF± (1.9% + 8dgt) 39.99 μF399.9 μF3999 μFOverload protection：1000 V rmsFlex AC Current (voltage input):Function Range(1mV/1A) Accuracy* ACA 300.0A/3000A 1%+5dgt (50~500Hz) **HFR ACA 300.0A/3000A1%+5dgt(50~60Hz) ** 5%+5dgt(61~400Hz) **Peak 420.0A/4200A 3%+80dgt(50~500Hz) INRUSH 300.0A/3000A 2%+10dgt(50/60Hz) Frequency 99.99Hz/999.9Hz 0.5%+3dgt(<500Hz) THD 99.9% 5%+10dgtHarmH01-H1299.9% 5%+10dgt*The accuracy of ICA 10T/18T is not included.**ACA <300dgt, add 3 dgt to the accuracy.Overload protection: 1000V rmsTrigger level of INRUSH: 1% of current range。

PM240-2型平磨仪的保养与维修

PM240—2型平磨仪的保养与维护和修理平磨仪型号：PM2402一、用途及特点本机可作为颜料、涂料和油墨等行业专用物理性能检验仪器。

整机结构紧凑，外观简洁，转数和负荷改换方便，玻璃盘装拆简便，同时设有数字显示及自动停机装置。

二、结构三、规格（1）磨盘直径：240mm（2）荷载：27kg47kg68kg102kg（3）砝码重量：0.9kg1.75kg1.75kg2.92kg（4）电源电压：（三相）380V5PHz（5）玻璃盘转速：805转/分（6）累计数：0—9（7）给定数：0999（8）数字显示范围：0—999四、使用前检查（1）平磨仪每次使用前要检查上、下玻璃金属盘套螺母②是否拧紧，如未拧紧需拧紧后方可使用。

（2）空载运转时，必需打开磨盘的上盘，磨盘转向为顺时针方向。

五、平磨仪与计数器的连接计数器后板如图二所示：将～380V电源接入计数器～380V输入端，掌控输出端连接平磨仪主机后板输入端，计数器信号输入端连接平磨仪主机后板的信号输出端。

上述连接经检查正确无误后，方可开机使用。

六、操作步骤（1）预置拨盘开关若拨置OOO状态时，整机将不工作。

（2）将定量的试样和调和剂放在下盘玻璃①上，用调刀调和成浆，然后将调和好的浆移到磨盘中心位置，然后放下上盘玻璃，使销子③与销子座⑤扣上，再将负荷手柄⑦向后扳下，挂上所需砝码⑧将预置拨盘开关（K1—K3）拨至所需转数，按下电源开关NO，接通总电源，然后按N4置数按键，此时计数器显示数字应与预置数相同。

（3）按下工作键N1，平磨仪即可转动，每转动一圈，计数显示减1；当计数显示为“0”时，平磨仪自动停机。

（4）将负荷手柄⑦往前扳，把磨盘上、下盘分别，再把手④往外拉，同时向上往后推起，然后收集试样。

假如利用转动磨盘来收集下磨盘的试样，可把停计按键N3按到底，即可长时间转动，计数器停止计数。

试样收集完毕后，按停止按键N2则停止转动。

此时若再要进行计数研磨，必需再按动停计按键N3，使该按键复位，否则计数器不能计数。

LN2402 资料完整版

■ Package
SOT-23-5L
■ Features
High Efficiency: 96％ 1.5MHz Constant Switching Frenquency Output Current: 1A Shutdown Current: <1uA Short Circuit Protection
5
FB
4
VIN
CE
GND
LX
1
2
(Top View)
3
■ Typical Application Circuit
VIN VIN 4.7uF LX R1 10uF 2.2uH VOUT
LN2402
CE GND FB
R2
■ Functional Pin Description
Pin Number 1 2 3 4 Pin Name CE GND LX VIN Function
■ Marking Rule
SOT-23-5L
5
③ ④ ⑤ ⑥
4
① ②
1234
1 2
SOT-23-5L
3
1
Represents the product name Symbol A Product Name LN2402A◆◆◆
2
Represents the product classification Symbol 1 Working mode PWM/PFM
Rev.1.0 —Mar. 11, 2014
3

LN2402
RDSON of P-CH MOSFET RDSON of N-CH MOSFET CE ”Low” Voltage CE ”High” Voltage Shutdown Current Quiescent Current Output Current Short-circuit Current Peak Inductor Current LX Leakage Oscillation Frequency Maximum Duty Circle Over Temperature Shutdown Over Temperature Shutdown Hysteresis ILX=100mA ILX=100mA VIN=5.0V VIN=5.0V VIN=5.5V, VCE=0V VFB=0.65V VIN=3.6V VIN=3.6V, VFB=0.5V VCE=0V, VIN=5V, VLX=0V VFB=0.6V 1.1 0 1 1 1.2 100 0.4 0.35 300 200 1.2 ±0.01 1.5 155 20 0.5 0.45 0.9 1 500 1.4 ±1 1.8 ohm ohm V V uA uA A mA A uA MHz % ℃ ℃

AP2402中文资料

1Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402General DescriptionThe AP2402 series are dual positive voltage regulator ICs fabricated by CMOS process. Each of these ICs consists of a voltage reference, two error amplifiers,two resistor networks for setting output voltages. Each channel has a current limit circuit for current protection and a chip enable circuit with quick discharge function.The AP2402 series feature high supply voltage ripple rejection, low dropout voltage, low noise, high output voltage accuracy, and low current consumption which make them ideal for use in various battery-powered devices. The chip-enable function allows the output of each channel to be turned on/off independently, greatly reducing the power consumption.The AP2402 series have 2.5V/1.8V , 2.8V/1.8V and 2.8V/2.8V versions.The AP2402 are available in SOT-23-6, TSOT-23-6and DFN-2×2-8 packages.Features·Minimum Output Current Capability per Channel:300mA·High Output V oltage Accuracy: ±2%·Low Quiescent Current per Channel: 50µA Typi-cal·Low Standby Current: 0.1µA Typical ·High PSRR: 70dB Typical （f=1kHz)·Extremely Low Noise: 30µVrms (10Hz to 100kHz)·Operating Temperature: -40 to 85o C·Compatible with Low ESR Ceramic CapacitorApplications·Mobile Phones, Cordless Phones ·Wireless Communication Equipment ·Portable Games·Cameras, Video Recorders·Sub-board Power Supplies for Telecom Equip-ment·Battery Powered EquipmentFigure 1. Package Types of AP2402SOT-23-6TSOT-23-6DFN-2×2-82Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402OUT 1Pin ConfigurationFigure 2. Pin Configuration of AP2402 (Top View)K Package (SOT-23-6)Pin DescriptionPin Number Pin Name Function6-pin 8-pin 17V OUT 2Output voltage 225GND Ground33CE2On/Off control 2, logic high=enable; logic low=shutdown 42CE1On/Off control 1, logic high=enable; logic low=shutdown 51V IN Input voltage 68V OUT 1Output voltage 14, 6NCNo connectionIN V OUT OUT 1 KT Package (TSOT-23-6)DN Package (DFN-2×2-8)IN V OUT V IN CE1 CE2 NCOUT 2OUT 1DUAL 300mA LDO REGULATORS AP2402 Functional Block DiagramFigure 3. Functional Block Diagram of AP2402Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing Limited34Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402PackageTemperature Range Output VoltagesPart NumberMarking IDPacking TypeLead-Free GreenLead-Free Green SOT-23-6-40 to 85o C2.5V/1.8VAP2402A21KTR-E1AP2402A21KTR-G1EAA GAA Tape & Reel 2.8V/1.8V AP2402A31KTR-E1AP2402A31KTR-G1EAB GAB Tape & Reel 2.8V/2.8V AP2402A33KTR-E1AP2402A33KTR-G1EAC GAC Tape & Reel TSOT-23-6-40 to 85o C2.5V/1.8VAP2402A21KTTR-E1AP2402A21KTTR-G1S8A L8A Tape & Reel 2.8V/1.8V AP2402A31KTTR-E1AP2402A31KTTR-G1S8B L8B Tape & Reel 2.8V/2.8V AP2402A33KTTR-E1AP2402A33KTTR-G1S8C L8C Tape & Reel DFN-2×2-8-40 to 85o C2.5V/1.8VAP2402A21DNTR-E1AP2402A21DNTR-G16A DA Tape & Reel 2.8V/1.8V AP2402A31DNTR-E1AP2402A31DNTR-G16B DB Tape & Reel 2.8V/2.8VAP2402A33DNTR-E1AP2402A33DNTR-G16CDCTape & ReelCircuit TypePackage E1: Lead FreeAP2402 - TR: Tape and Reel Ordering InformationK: SOT-23-6 A: Active High(With Built-in Pull-down Resistor)3: Fixed Output 2.8V (Channel 2)2: Fixed Output 2.5V (Channel 1)3: Fixed Output 2.8V (Channel 1)1: Fixed Output 1.8V (Channel 2)KT: TSOT-23-6DN: DFN-2×2-8G1: Green BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages.DUAL 300mA LDO REGULATORS AP2402 Absolute Maximum Ratings (Note 1)Parameter Symbol Value Unit Input V oltage V IN 6.5V Enable Input V oltage V CE 6.5V Output Current (T A=25o C)I OUT1+I OUT2700mA Power Dissipation (T A=25o C)P D SOT-23-6250mW Junction Temperature T J150o C Storage Temperature Range T STG-65 to 150o C Lead Temperature (Soldering, 10sec)T LEAD260o C ESD (Human Body Model)ESD6000V ESD (Machine Model)ESD200V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.Recommended Operating ConditionsParameter Symbol Min Max Unit Input V oltage V IN6V Operating Ambient Temperature Range T A -4085 o CJul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing Limited56Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402ParameterSymbol ConditionsMin TypMax Unit Output V oltage Accuracy ∆V OUT /V OUTVariation from specified V OUT, I OUT =30mA-22%Input V oltageV IN 6V Maximum Output Current I OUT(Max)300mA Load Regulation V RLOAD 1mA ≤I OUT ≤300mA 1060mV Line RegulationV RLINEV OUT +1V ≤V IN ≤6V I OUT =30mA, V CE =V IN0.010.2%/VDropout V oltageV DROPI OUT =30mAV OUT =1.8V3036mVV OUT =2.5V 2024V OUT =2.8V 2024I OUT =100mAV OUT =1.8V 100120V OUT =2.5V 6580V OUT =2.8V6580Quiescent Current I Q I OUT =0mA 5090µA Standby Current I STD V CE in OFF mode0.11µAPower Supply Rejection Ratio PSRRRipple 0.5Vp-p, f=1kHz V IN =V OUT +1V , I OUT =30mA70dB Output V oltageTemperature Coefficient (∆V OUT /V OUT )/∆T I OUT =30mA, -40o C ≤T A ≤85o C±100ppm/o C Current Limit I LIMIT V CE =V IN400mA Short Circuit Current I SHORT V CE =V IN, V OUT short to GND 50mARMS Output Noise V NOISE10Hz ≤f ≤100kHz 30µVrmsCE "High" V oltage CE input voltage "High" 1.36V CE "Low" V oltage CE input voltage "Low"0.4VThermal Shutdown 165o C Thermal Shutdown Hys-teresis30o C(Channel 1/Channel 2: V IN =V OUT +1V , T A =25o C, C IN =1µF, C OUT =1µF, unless otherwise specified.)Electrical Characteristics7Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics5010015020025030035040045050030405060708090100110Output Current (mA) 2.8V ChannelT C =25oCV IN =3.8V V IN =6VFigure 4. Ground Current vs. Output CurrentFigure 5. Ground Current vs. Output CurrentFigure 6. Ground Current vs. Output Current501001502002503003500102030405060708090100110G r o u n d C u r r e n t (µA Output Current (mA)1.8V Channel V IN =2.8VT C =-40oC T C =25o C Figure 7. Ground Current vs. Output Current8Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)Figure 9. Ground Current vs. Output CurrentFigure 8. Ground Current vs. Output Current Figure 10. Output Voltage vs. Output CurrentFigure 11. Output Voltage vs. Output Current3060901201501802102402703001.741.761.781.801.821.84Output Current (mA) 1.8V Channel V IN =2.8V T C =25oC3060901201501802102402.402.422.442.462.482.502.522.54O u t p u t V o l t a g e (V )Output Current (mA)2.5V Channel V IN =3.5V T C =25o9Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Figure 12. Output Voltage vs. Output CurrentTypical Performance Characteristics (Continued)Figure 13. Output Voltage vs. Output Current50100150200250300350400450500Output Current (mA)2.5V Channel V IN =3.5VT C =-40oC T C =25o C T C =85o CFigure 14. Output Voltage vs. Output Current501001502002503003504000.00.40.81.21.62.0O u t p u t V o l t a g e (V Output Current (mA)2.8V Channel V IN =3.8VT C =-40oC T C =25o C T =85o CFigure 15. Output Voltage vs. Output Current10Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)501001502002503003504004505000.81.21.62.02.4Output Current (mA) 2.8V ChannelT C =25oCV IN =3.8V V IN =6VFigure 16. Output Voltage vs. Output CurrentFigure 17. Output Voltage vs. Output CurrentFigure 18. Output Voltage vs. Output CurrentFigure 19. Output Voltage vs. Input Voltage0123450.00.20.40.60.81.01.21.41.6O u t p u t V o l t a g e (V )Input Voltage (V)1.8V ChannelT C =25oCI OUT =10mA I OUT =100mA I OUT =300mA11Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Figure 20. Output Voltage vs. Input VoltageTypical Performance Characteristics (Continued)Figure 21. Output Voltage vs. Input VoltageFigure 22. Dropout Voltage vs. Output Current Figure 23. Dropout Voltage vs. Output Current5010015020025030050100150200250Output Current (mA)C T C =85oC050100150200050100150200250D r o p o u t V o l t a g e (m Output Current (mA)T C =25C T C =85o C12Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)Figure 24. Dropout Voltage vs.Output CurrentFigure 25. Output Voltage vs. Case TemperatureFigure 26. Output Voltage vs. Case Temperature-30-151530452.702.722.742.762.782.802.822.84O u t p u t V o l t a g e (V )Case Temperature (oC)2.8V Channel V IN =3.8V I OUT =30mAFigure 27. Output Voltage vs. Case Temperature-30-1515304560752.442.462.482.502.522.54 2.5V Channel V IN =3.5V I OUT =30mACase Temperature (oC)13Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Figure 28. Quiescent Current vs. Input VoltageFigure 29. Quiescent Current vs. Input VoltageTypical Performance Characteristics (Continued)Figure 30. Quiescent Current vs. Input Voltage 12345615304560Input Voltage (V) 2.8V Channel No LoadT C =-40oCT C =25oC T C =85o CFigure 31. Quiescent Current vs. Case Temperature-30-151530454041424344454647Q u i e s c e n t C u r r e n t (Case Temperature (oC)14Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)Figure 32. Quiescent Current vs. Case TemperatureFigure 33. Quiescent Current vs. Case Temperature(Conditions: I OUT =50mA, C IN =0.68µF, C OUT =1µF)V I N (1V /D i v )∆V O U T (50m V /D i v )V I N (1V /D i v )Figure 34. Line Transient(Conditions: I OUT =50mA, C IN =0.68µF, C OUT =1µF)Time (40µs/Div)01.82.850-503.8 2.53.54.5 Time (40µs/Div)∆V O U T (50m V /D i v )050-50 Figure 35. Line Transient-1004.85.5-1001.8V Channel2.5V Channel15Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)I O U T (50m A /D i v )I O U T (50m A /D i v )∆V O U T (10m V /D i v ) Time (200µs/Div)10050 Figure 36. Load TransientFigure 37. Load Transient Time (200µs/Div)∆V O U T (10m V /D i v )0-1010 (Conditions: V IN =2.8V, I OUT =10 to 100mA, C IN =C OUT =1µF) (Conditions: V IN =3.5V, I OUT =10 to 100mA, C IN =C OUT =1µF)1.8V Channel2.5V Channel-201500100501500-1010-20Figure 38. Cross Talk 1I OUT 2=10 to 100mA, C IN =C OUT =1µF)∆V O U T 2 (20m V /D i v )∆V O U T 1 (20m V /D i v ) ∆V OUT 1∆V OUT 2I O U T 2 (50m A /D i v )Time (100µs/Div)501000(Conditions: channel 1 and 2 on, I OUT 1=30mA, 0-20-40 Figure 39. Cross Talk 2(Conditions: channel 1 and 2 on, I OUT 1=10 to 100mA,1500-20-4020-60-80∆V O U T 2 (20m V /D i v )∆V O U T 1 (20m V /D i v ) ∆V OUT 1∆V OUT 2I O U T 1 (50m A /D i v )Time (100µs/Div)5010000-20-401500-20-4020-60-80I OUT 2=30mA, C IN =C OUT =1µF)16Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)Figure 40. Enable Voltage vs. Output VoltageTime (10µs/Div)V O U T 1 (1V /D i v )V O U T 2 (0.5V /D i v )V OUT 1V OUT 212 10 -123V C E 1/V C E 2 (1V /D i v )(Conditions: V CE 1=V CE 2=0 to 2V, I OUT =0mA, C IN =C OUT =1µF)Figure 41. Auto Discharge Function (Conditions: V CE 1=V CE 2=0 to 2V, I OUT =0mA, C IN =C OUT =1µF)Time (100µs/Div)V O U T 1 (0.5V /D i v ) V O U T 2 (1V /D i v )V OUT 1V OUT 21012323V C E 1/V C E 2 (1V /D i v )10.50-0.51.5200.51-0.5-1Figure 42. PSRR vs. Frequency Figure 43. PSRR vs. Frequency1001k 10k 100k 203040506070OUT C OUT =1µFFrequency (Hz)101001k 10k 010203040506070C OUT =1µFP S R R (d B )Frequency (Hz)17Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)Figure 45. PSRR vs. FrequencyFigure 44. PSRR vs. FrequencyFigure 46. PSRR vs. Frequency Figure 47. PSRR vs. Frequency1001k 10k 100k203040506070OUT C OUT =1µFFrequency (Hz)101001k 10k 010203040506070C OUT =1µFP S R R (d B )Frequency (Hz)18Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical Performance Characteristics (Continued)Figure 48. Power Dissipation vs. Case Temperature Figure 49. Power Dissipation vs. Case Temperature19Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Typical ApplicationFigure 50. Typical Application of AP240220Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Mechanical DimensionsSOT-23-6Unit: mm(inch)2.000(0.079)0.200(0.008)0.100(0.004)1.050(0.041)1.150(0.045) 1.050(0.041)1.250(0.049)DUAL 300mA LDO REGULATORS AP2402 Mechanical Dimensions (Continued)TSOT-23-6Unit: mm(inch)0.700(0.028)0.800(0.031)0.700(0.030)0.900(0.035)0.000(0.000)0.100(0.004)0.350(0.014)0.510(0.020)Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing Limited2122Jul. 2008 Rev. 1. 1BCD Semiconductor Manufacturing LimitedDUAL 300mA LDO REGULATORS AP2402Mechanical Dimensions (Continued)DFN-2x2-8Unit: mm(inch)0.178(0.007)0.228(0.009)0.000(0.000)0.050(0.002)0.700(0.028)0.800(0.031)BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-- Wafer FabShanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008BCD Semiconductor Manufacturing LimitedREGIONAL SALES OFFICEShenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Tel: +86-755-8826 7951Fax: +86-755-8826 7865Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808Fax: +886-2-2656 2806USA OfficeBCD Semiconductor Corporation 30920 Huntwood Ave. Hayward,CA 94544, U.S.ATel : +1-510-324-2988Fax: +1-510-324-2788- IC Design GroupAdvanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, ChinaTel: +86-21-6495 9539, Fax: +86-21-6485 9673BCD Semiconductor Manufacturing LimitedBCD Semiconductor Manufacturing LimitedIMPORTANT NOTICEcations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.- Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.800 Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen,518026, China Tel: +86-755-8826 7951Fax: +86-755-8826 7865Taiwan OfficeBCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808Fax: +886-2-2656 2806USA OfficeBCD Semiconductor Corp.30920 Huntwood Ave. Hayward,CA 94544, USA Tel : +1-510-324-2988Fax: +1-510-324-2788- Headquarters BCD Semiconductor Manufacturing Limited No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Tel: +86-21-24162266, Fax: +86-21-24162277元器件交易网。

AMP04FSZ,AMP04FPZ,AMP04EPZ,AMP04FSZ-RL,AMP04FSZ-R7,AMP04FS-REEL7,AMP04ESZ-R7, 规格书,Datasheet 资料

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site:
Fax: 781/326-8703
© Analog Devices, Inc., 2000
For high resolution data acquisition systems, laser trimming of low drift thin-film resistors limits the input offset voltage to under 150 µV, and allows the AMP04 to offer gain nonlinearity of 0.005% and a gain tempco of 30 ppm/°C.
1000 1 0.005 0.015 0.025 30
0.75 %
1.0 %
0.75
%
1000 V/V
%
%
%
50
ppm/°C
OUTPUT Output Voltage Swing High
Output Voltage Swing Low Output Current Limit
VOH
RL = 2 kΩ
Contact your local sales office for MIL-STD-883 data sheet and availability.
PIN CONNECTIONS
8-Lead Epoxy DIP (P Suffix)
8-Lead Narrow-Body SO (S Suffix)
25

MRF系列产品介绍

MRF系列产品介绍(仅其中一部分)型号功能MRF581 5G 0.6WMRF181 800-1G 10WMRF182 1G 30WMRF281 800-2.6G 4WMRF282 2.6G 20WMRF284 800-2.6G 30W 带螺丝座MRF20060 1.7-2.6G 60WMRF9045 9G 45WMRF5003 520M 15WMRF5007 520M 15WMRF1517 520M 15WMRF1507 520M 15WMRF1511 175M 15WMRF1518 175M 15WMRF553 175M 1.5W33P50 520M 1W2SK2595 1G 10WMRF10005960-1215 MHz, 5.0 W, 28 V 微波功率晶体管MRF10031960-1215 MHz, 30 W (Peak), 36 V 微波功率晶体管MRF10120960-1215 MHz, 120 W (Peak), 36 V 微波功率晶体管MRF101501025-1150 MHz, 150 W (Peak), 50 V 微波功率晶体管MRF103501025-1150 MHz, 350 W (Peak), 50 V 微波功率晶体管MRF105021025-1150 MHz, 500 W (Peak), 50 V 微波功率晶体管MRF134达到400 MHz, 5.0 W, 28 V N 宽带射频功率MOSFETMRF136达到400 MHz, 15 W, 28 V N 宽带射频功率MOSFET MRF141175 MHz, 150 W, 28 V N 宽带射频功率MOSFETMRF141G175 MHz, 300 W, 28 V N 宽带射频功率MOSFETMRF148A达到175 MHz, 30 W, 50 V N 宽带射频功率MOSFETMRF150达到150 MHz, 150 W, 50 V N 宽带射频功率MOSFETMRF151175 MHz, 150 W, 50 V N 宽带射频功率MOSFETMRF151G175 MHz, 300 W, 50 V N 宽带射频功率MOSFETMRF15480 MHz, 600 W, 50 V N 宽带射频功率MOSFETMRF157达到80 MHz, 600 W, 50 V N 宽带射频功率MOSFETMRF158达到500 MHz, 2.0 W, 28 V TMOS N 宽带射频功率FETMRF160500 MHz, 4.0 W, 28 V N 宽带射频功率MOSFETMRF160061.6 GHz, 6.0 W, 28 V 射频功率晶体管MRF160301.6 GHz, 30 W, 28 V RF 射频功率晶体管MRF166C500 MHz, 20 W, 28 V N 宽带射频功率MOSFETMRF166W500 MHz, 40 W, 28 V TMOS N宽带射频功率FETMRF171A150 MHz, 45 W, 28 V N 宽带射频功率MOSFETMRF173175 MHz, 80 W, 28 V N 宽带射频功率MOSFETMRF174200 MHz, 125 W, 28 V N 宽带射频功率MOSFETMRF177400 MHz, 100 W, 28 V N 宽带射频功率MOSFETMRF275G100–500 MHz, 150 W, 28 V N 宽带射频功率MOSFETMRF275L500 MHz, 100 W, 28 V N 宽带射频功率MOSFETMRF42630 MHz, 25 W, 28 V 射频功率晶体管NPN SiMRF587500 MHz, 15 V, NF = 3.0 dB, 高频晶体管MRFIC1818 1.7-1.9G 2WMRF183 1G 45WMRF187 800-960MHz 85WMRF7042 900MHz 45WMRF175 400MHz 200WMRF581 5G 0.6W2SK2596 800-960MHz 1.5WBFG10 25G 0.6VBFG21 18G 4.5V 0.5A 0.6WBFG403 17G 4.5V 16MA 0.3WBFG410 22G 4.5V 12MA 135MWBFG425 25G 4.5V 30MA 135MWBFG450 45G 0.2WBFG540 45G 3V 30MA 135MWBFG541 9G 0.6WBLT81 800-960M 1.2WTP3022 800-960M 15WTDA1576 ICSRF7062 800-960M 150WMHL9236 800-960M 3WMHL7008 800-960M 3WMHL9128 800-960M 3WATF10136 4G 0.4WCMM2308 800-2.7G 1WCMM1330 1.7-1.9G 2WPF0030 860-915M 7W终端负载50欧5W 3G,18G 驻波小于1.06高频电阻50欧100欧30W 100W 3G型号技术指标数量单价(US$) 型号技术指标数量单价(US$)MRF281 800-2.6G 4W 4K 10 BFG10 25G 0.6W 10K 1MRF282 800-2.6G 10W 4K 15 BFG21 18G 4.5V 0.5A 0.6W 5K 1MRF284 800-2.6G 30W 带螺丝座4K 20 BFG403 17G 4.5V 16MA 0.3W 5K 0.5 MRF20060 1.7-2.6G 60W 6K 30 BFG410 22G 4.5V 12MA 135MW 5K 0.5 MRF181 800-960M 10W 2K 10 BFG425 25G 4.5V 30MA 135MW 4K 0.5 MRF182 1G 30W 500PC 15 BFG450 45G 0.2W 1K 3MRFIC1818 1.7-1.9G 2W 2K 10 BFG540 45G 3V 30MA 135MW 2K 3MRF187 800-960M 85W 1K 30 BFG541 9G 0.6W 3K 0.5MRF7042 900M 45W 2K 15 BFG198 9G 1W 3K 0.5MRF9045 9G 45W 200PC 30 TP3022 800-960M 15W 4K 6MRF581 5G 0.6W 5K 0.5 TDA1576 IC 2K 2MRF5003 520M 15W 5K 3 SRF7062 800-960M 150W 2K 40MRF5007 520M 15W 5K 5 MHL9236 800-960M 3W 200PC 20MRF1517 520M 15W 2K 5 MHL7008 800-960M 3W 500PC 15MRF1507 520M 15W 2K 5 MHL9128 800-960M 3W 500PC 15MRF1511 175M 15W 2K 5 ATF10136 4G 0.4W 10K 1.5MRF1518 175M 15W 1K 5 CMM2308 800-2.7G 1W 10K 1.5MRF553 175M 1.5W 6K 0.5 CMM1330 1.7-1.9G 2W 5K 2MRF137 225MHz 30W 100PC 20 RF2125 1.5-2.2G 1W 1K 5MRF141 225MHZ 150W 100PC 40 PF0030 860-915M 7W 2K 2MRF151G 175MHz 300W 500PC 100 2SC1971 175MHz 7W 5K 1MRF154 150MHz 600W 500PC 200 2SC3356 6.5G 0.2W 5K 0.1MRF175G 500MHz 150W 500PC 100 2SC3357 6.5G 2W 5K 0.2MRF6404 1.8-2G 1K 10 2SC2407 500MHz 0.6W 10K 0.2BLT50 500M 1.2W 5K 0.6 2SC1906 1G 150MW 10K 0.05BLT81 400-960M 1.2W 3K 1 BLU98 5G 0.7W 5K 0.52SK2596 800-960M 1.5W 5K 0.5 33P55 800-960MHz 60W 5K 102SK2595 800-960M 10W 10K 3 E626 800-960Mhz 60W 5K 103SK228 1G 高放双栅管5K 0.15 终端负载50欧5W 3G,18G 驻波小于1.06 3K 10,100温补晶体12.8MHZ 贴片7x7M 5k 3 高频电阻50欧100欧30W 100W 3G 10k 2 MRF92822A 7W 手持对讲机/长距离无绳电话/车载台/手机专用功率发射晶体管集成电路ICMC3361 10K 0.1 HT9200 5K 0.2MC33110 5K 0.2 HT9170 5K 0.2MC34119 5K 0.1 93C66 5K 0.1LM386 5K 0.1 24C08 5K 0.2M54958 5K 1.5 EM92547 5K 0.2M64082 5K 0.5 KA4588 5K 0.1TB31202 5K 0.4 KA567 5K 0.1手机功放及常用元件型号技术指标数量单价(US$) 型号技术指标数量单价(US$)MRFIC0913 800-1000MHZ 2W 现货面议AP109 900MHZ 2W 现货面议27E31 900MHZ 2W 现货面议AP119 1800MHZ 2W 现货面议08K38 900MHZ 2W 现货面议4370451 900MHZ 2W 现货面议08K40 900MHZ 2W 现货面议4370453 1800MHZ 2W 现货面议08K07 900MHZ 2W 现货面议TRF6053 900MHZ 2W 现货面议08K11 900MHZ 2W 现货面议TRF2253 频率合成IC 现货面议PF01420B 900MHZ 2W 现货面议13MHZ 温补晶体现货面议PF01412A 1800MHZ 2W 现货面议881-942 声表滤波器现货面议PF01411B 900MHZ 2W 现货面议PF014110B 1800MHZ 2W 现货面议常用元件MRF5711 8G 0.33W 现货面议BFQ67 8G 0.3W 现货面议MRF5811 5G 0.7W 现货面议BFG540 9G 0.4W 现货面议MMBR941 8G 0.25W 现货面议BFR182W 8G 0.3W 现货面议MMBR503 1G 0.3W 现货面议BFR91 6G 0.3W 现货面议MMBR901 4G 0.3W 现货面议BU508 现货面议84UD22182EB-9C 现货面议Y759B 现货面议F741529AGHH 现货面议08122B 现货面议TWL3011GGM 现货面议089711747 现货面议LMST 现货面议LS28 现货面议。

艾默生es2402变频器调试指导书

艾默生E S2402变频器调试指导书(总11页)-CAL-FENGHAI.-(YICAI)-Company One1-CAL-本页仅作为文档封面，使用请直接删除E S2402变频器调试指导书1、1、编码器连接（海德汉ECN1313）2、操作器操作说明面板操作说明键盘包括：导航键、一个模式键M、三个控制键（含红色复位键）四维导航键用于控制参数结构并更改参数值。

模式键用于切换各种显示模式，如察看参数，编辑参数、状态。

若选用键盘模式，可用三个控制键控制变频器。

红色停止键可以用于变频器复位。

如果你第一次使用变频器时（单独变频器时，当变频器已安装柜内且到现场后，请不要随便按此操作），变频器恢复出厂值方法：方法是0.00=1233（欧洲标准），然后按红色复位键改变控制模式方法：将0.00=1253（欧洲标准），按红色复位键，然后0.48从OPEN LP更改到SERVO。

按复位键（红色）显示所有菜单方法：0.49=L2，按M键，将0.00=1000，按红色复位键保存软件版本查询：20.01改变模式并恢复出厂值（菜单15到20除外）：0.00=1255，按红色复位键3、自学习步骤一、自学习前准备工作：1、使主机脱离负载。

2、通过短接线路的方法，使变频器输出接触器和抱闸打开，同步主机保证封星短接线已经断开，（如3、果满足检修条件，可以不用短接线路，直接按检修上行或下行信号控制器会输出变频器输出接触器，方向及使能信号、抱闸信号）4、设定参数0.48=SERO（闭环伺服）控制模式。

5、确定在变频器的扩展模块槽2上插入编码器分频卡（Universal Encoder?Plus），变频器的扩展模块槽见说明书。

设定参数16.17=06、在连接编码器前最好检查一下参数3.36（变频器提供给编码器的电源电压），出厂缺省值3.36=5V。

预防该参数修改后损坏编码器。

7、连接编码器，把编码器的接口连到变频器的15针编码器的输入口上（而不是PG卡的15针插口），并固定。

摩卡电子V2401 2402系列独立计算机商品介绍说明书

The V2401/2402 Series embedded computers are based on the Intel Atom N270 x86 processor, and feature 4 RS-232/422/485 serial ports, 8 RS-232 serial ports, dual Gigabit LAN ports, 6 USB 2.0 hosts, and a CompactFlash socket. The V2401 computer provides VGA, DVI, and LVDS outputs, and the V2402 computer provides both VGA and DVI outputs, making them particularly well-suited for industrial applications such as SCADA and factory automation.The V2401 and V2402 come with 4 RS-232/422/485 serial ports, and the V2401 has an additional 8 RS-232 ports, making them ideal for connecting a wide range of serial devices, and the dual 10/100/1000 Mbps Ethernet ports offer a reliable solution for network redundancy, Front View promising continuous operation for data communication and management. As an added convenience, the V2401/2402 computers have 4 DIs, and 4 DOs for connecting digital input/output devices. In addition, the CompactFlash and USB sockets provide the V2401/2402 computers with the reliability needed for industrial applications that require data buffering and storage expansion.Pre-installed with Linux, Windows CE 6.0, or Windows Embedded Standard 2009, the V2401/2402 Series provides programmers with a friendly environment for developing sophisticated, bug-free application software at a low cost.In addition, the V2402 series also offers -40 to 70°C wide temperature models for harsh environments.V2401/2402 SeriesOverviewAppearancePower/Storage 10/100/1000 Mbps(V2401)Rear ViewHardware SpecificationsComputerCPU: Intel Atom N270 1.6 GHz processorOS (pre-installed): Linux, Windows CE 6.0 or Windows Embedded Standard 2009System Chipset: Intel 945GSE + ICH7-MBIOS: 8 Mbit Flash BIOS, SPI type, ACPI function supportedFSB: 400/533 MHzSystem Memory: 2 GB capacity, 1 GB pre-installed: 1 x 2 GBDDR2-533 200 pin SO-DIMM SDRAM slotUSB: USB 2.0 compliant hosts x 6, type A connector, supports system boot upStorageBuilt-in: 2 GB onboard industrial DOM to store OSStorage Expansion: CompactFlash socket for CF card expansion, supporting CF Type-I/II socket with DMA modeHDD Support: 1 SATA-II connector for HDD expansionOther PeripheralsKB/MS: 1 PS/2 interface supporting standard PS/2 keyboard and mouse through Y-type cableAudio: HD audio, with line-in and line-out interfaceDisplayGraphics Controller: Intel Gen 2.5 Integrated Graphics Engine, 250 MHz core render clock and 200 MHz core display clock at 1.05-V core voltage VGA Interface: DB15 female connectorLVDS Interface: Onboard HIROSE DF13-40DP-1.25 V connector (V2401 only)DVI Interface: DVI-connector (chrontel CH7307 SDVO to DVI transmitter)Ethernet InterfaceLAN: 2 auto-sensing 10/100/1000 Mbps ports (RJ45)Serial InterfaceSerial Standards:• V2401/2402: 4 RS-232/422/485 ports*, software selectable (DB9 male connector)• V2401 only: 8 RS-232 ports (68-pin VHDC connector)*COM1’s pin 9 signal can be set by jumper as N/C (default), +5 V, or +12 V ESD Protection: 4 kV for all signalsSerial Communication ParametersData Bits: 5, 6, 7, 8Stop Bits: 1, 1.5, 2Parity: None, Even, Odd, Space, MarkFlow Control: RTS/CTS, XON/XOFF, ADDC® (automatic data direction control) for RS-485Baudrate: 50 bps to 921.6 kbps (non-standard baudrates supported; see user’s manual for details)Serial LEDs RS-232/422/485RS-232 Serial Port x 8 DI x 4Software SpecificationsSerial SignalsRS-232: TxD, RxD, DTR, DSR, RTS, CTS, DCD, GND RS-422: TxD+, TxD-, RxD+, RxD-, GND RS-485-4w: TxD+, TxD-, RxD+, RxD-, GND RS-485-2w: Data+, Data-, GNDDigital InputInput Channels: 4, source type Input Voltage: 0 to 30 VDC at 25 Hz Digital Input Levels for Dry Contacts: • Logic level 0: Close to GND • Logic level 1: OpenDigital Input Levels for Wet Contacts: • Logic level 0: +3 V max.• Logic level 1: +10 V to +30 V (Source to DI)Isolation: 3 kV opticalDigital OutputOutput Channels: 4, sink typeOutput Current: Max. 200 mA per channelOn-state Voltage: 24 VDC nominal, open collector to 30 VDC Connector Type: 10-pin screw terminal block (4 DI points, 4 DO points, DI Source, GND)Isolation: 3 kV optical isolationLEDsSystem: Power, StorageLAN: 100M/Link x 2, 1000M/Link x 2 (on connector)Switches and ButtonsPower Switch: on/off (front panel)Reset Button: For warm reboot (rear panel)Physical CharacteristicsHousing: Aluminum Weight:• V2401: 2.1 kg • V2402: 2 kg Dimensions:Without ears: 250 x 57 x 152 mm (9.84 x 2.24 x 5.98 in)With ears: 275 x 63 x 152 mm (10.83 x 2.48 x 5.98 in)Mounting: DIN rail, wall, VESAEnvironmental LimitsOperating Temperature:• Standard models: -10 to 60°C (14 to 140°F) • Wide temp. models : -40 to 70°C (-40 to 158°F)Storage Temperature: -40 to 85°C (-40 to 185°F)Ambient Relative Humidity: 5 to 95% (non-condensing)Anti-vibration: 5 g rms @ IEC-68-2-34, random wave, 5-500 Hz, 1 hr/axisAnti-shock: 50 g @ IEC-68-2-27, half sine wave, 11 msPower RequirementsInput Voltage: 9 to 36 VDC (3-pin terminal block for V+, V-, SG)Power Consumption: 26 W (without LVDS output) 2.9 A @ 9 VDC 1.08 A @ 24 VDC 720 mA @ 36 VDCStandards and CertificationsSafety: UL 508, UL 60950-1, CSA C22.2 No. 60950-1-07, EN 60950-1, CCC (GB9254, GB17625.1)EMC: EN 55022 Class A, EN 61000-3-2 Class D, EN 61000-3-3, EN 55024, FCC Part 15 Subpart B Class A Wheeled Vehicles: e-Mark (e4)Green Product: RoHS, CRoHS, WEEEReliabilityAutomatic Reboot Trigger: Built-in WDT (watchdog timer) supporting 1-255 level time interval system reset, software programmable MTBF (mean time between failures): V2401: 238,762 hrs V2402: 228,172 hrsWarrantyWarranty Period: 3 yearsDetails: See /warrantyLinuxOS: Linux 2.6.26, Debian Lenny 5.0File System: EXT2Internet Protocol Suite: TCP, UDP, IPv4, SNMPv1/v2c/v3, ICMP, ARP, HTTP, CHAP, PAP, SSH 1.0/2.0, SSL, DHCP, NTP, NFS, Telnet, FTP, TFTP, PPP, PPPoEInternet Security: OpenVPN, iptables firewallWeb Server (Apache): Allows you to create and manage web sites; supports PHP and XMLTerminal Server (SSH): Provides secure encrypted communications between two un-trusted hosts over an insecure networkDial-up Networking: PPP Daemon for Linux that allows Unix machines to connect to the Internet through dialup lines, using the PPP protocol, as a PPP server or client. Works with ‘chat’, ‘dip’, and ‘diald’, among (many) others. Supports IP, TCP, UDP, and (for Linux) IPX (Novell).File Server: Enables remote clients to access files and other resources over the networkWatchdog: Features a hardware function to trigger system reset in a user specified time interval (Moxa API provided)Application Development Software:• Moxa API Library (Watchdog timer, Moxa serial I/O control, Moxa DI/DO API)• GNU C/C++ compiler • GNU C library • PerlWindows XP EmbeddedOS: Windows Embedded Standard 2009 SP3File System: NTFSInternet Protocol Suite: DHCP, DNS, FTP, HTTP, SNTP, NTP, Telnet, SMTP, SNMPv2, TCP, UDP, IPv4, ICMP, IGMP, IPsec, TAPI, ICS, PPP, CHAP, EAP, PPPoE, PPTP, NetBIOSWeb Server (IIS): Allows users to create and manage websitesSilverlight 2.0: A free runtime that powers rich application experiences and delivers high quality, interactive video across multiple platforms and browsers, using the .NET frameworkRemote Registry Service: Enables remote users to modify registry settings on this computerRemote Desktop: The Terminal Server Remote Desktop component provides remote access for the desktop of a computer running Terminal ServicesWatchdog: Features a hardware function to trigger system reset in a user specified time interval (Moxa API provided)Enhanced Writer Filter: Redirect disk write operations to volatile (RAM) or non-volatile (disk) storageFile Based Write Filter: The File Based Write Filter (FBWF) component redirects all write requests directed at protected volumes to the overlay cache, which records and displays the changes while preserving the protected status of the target volume.Application Development Software: • Moxa API Library• Microsoft .Net Framework 3.5 with SP1• Active Directory Service Interface (ADSI) Core • Active Template Library (ATL), 2.0 • Common Control Libraries • Common File Dialogs• Direct3D, DirectPlay, DirectShow, and Direct show filtersOrdering InformationAvailable ModelsV2401-CE: x86 ready-to-run embedded computer with Intel Atom N270, VGA, LVDS, DVI, Audio, 2 LANs, 12 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, WinCE 6.0V2401-XPE: x86 ready-to-run embedded computer with Intel Atom N270, VGA, LVDS, DVI, Audio, 2 LANs, 12 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, Windows Embedded Standard 2009V2401-LX: x86 ready-to-run embedded computer with Intel Atom N270, VGA, LVDS, DVI, Audio, 2 LANs, 12 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, Linux 2.6V2402-CE: x86 ready-to-run embedded computer with Intel Atom N270, VGA, DVI, Audio, 2 LANs, 4 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, WinCE 6.0V2402-XPE: x86 ready-to-run embedded computer with Intel Atom N270, VGA, DVI, Audio, 2 LANs, 4 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, Windows Embedded Standard 2009, -10 to 60°C operating temperatureV2402-LX: x86 ready-to-run embedded computer with Intel Atom N270, VGA, DVI, Audio, 2 LANs, 4 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, Linux 2.6, -10 to 60°C operating temperatureV2402-T-XPE: x86 ready-to-run embedded computer with Intel Atom N270, VGA, DVI, Audio, 2 LANs, 4 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF, Windows Embedded Standard 2009, -40 to 70°C operating temperatureV2402-T-LX: x86 ready-to-run embedded computer with Intel Atom N270, VGA, DVI, Audio, 2 LANs, 4 serial ports, 4 DIs, 4 DOs, 6 USB 2.0 ports, CF,Linux 2.6, -40 to 70°C operating temperatureOptional Accessories (can be purchased separately) CBL-M68M9x8-100: 8-port RS-232 cable with VHDC connector PWR-24250-DT-S1: Power adaptorPWC-C7US-2B-183: Power cord with 2-pin connector, USA plug PWC-C7EU-2B-183: Power cord with 2-pin connector, Euro plug PWC-C7UK-2B-183: Power cord with 2-pin connector, British plug PWC-C7AU-2B-183: Power cord with 2-pin connector, Australia plug PWC-C7CN-2B-183: Power cord with 2-pin connector, China plug FK-75125-01: Hard disk installation package (for SSD)DK-DC50131-01: DIN-Rail mounting kit Package Checklist• V2401 or V2402 embedded computer • Terminal block to power jack converter • PS2 to KB/MS Y-type cable• Wall mounting kit• Documentation and software CD or DVD • Quick installation guide (printed)• Warranty card• Mapi32 Libraries• Message Queuing (MSMQ) Core• Microsoft Visual C++ Run Time Libraries• Power Management dynamic-link library• RPC• Windows API, Script Engines, and WMIWindows Embedded CE 6.0OS: Windows Embedded CE 6.0 R3File System: FAT (for on-board flash)Internet Protocol Suite: TCP, UDP, IPv4, SNMPv2, ICMP, IGMP, ARP, HTTP, CHAP, PAP, SSL, DHCP, SNTP, SMTP, Telnet, FTP, PPPWeb Server (WinCE IIS): Supports ASP, ISAPI Secure Socket Layer (SSL 2/3) and Transport Layer Security (TLS/SSL 3.1) publickey-based protocols, and Web Administration ISAPI ExtensionsDial-up Networking: Supports RAS client API and PPP, Extensible Authentication Protocol (EAP), and RAS scriptingFile Server: Enables remote clients to access files and other resources over the networkWatchdog: Features a hardware function to trigger system reset in a user specified time interval. (Moxa API provided)Application Development Software:• Moxa WinCE 6.0 SDK• Moxa API Library• C Libraries and Run-times• Component Services (COM and DCOM)• Microsoft® .NET Compact Framework 2.0• XML, including DOM, XQL, XPATH, XSLT, SAX, SAX2• SOAP Toolkit Client• Winsock 2.2。

KA2402中文资料

Fig. 2
APPLICATION CIRCUIT
Fig. 3
元器件交易网
DC MOTOR SPEED CONTROLLER
8-DIP-300
FEATURES
• Operating supply voltage range KA2402: Vcc=1.8V ~ 8V • Capable ot making the applicable set compact because of a minimum of adjust speed. • Easy to adjust speed. • Built-in stable low reference power meeting the requirements for 2 speeds. • VREF = 0.2V
a
Max 0.22 6.0 55 0.3
Unit V mA
çV /çV V
REF REF
VSAT
V %/V
REF
çK /çV
K
REF REF
CC
0.3
%/mA
çV /çT V çK /çT
REF REF
çV /çI V çK /çI
K
m
m
0.005 -0.07 -0.008 0.02
%/mA %/mA
ORDERING INFORMATION
Device Package 8-DIP-300 Operating Temperature -20
BLOCK DIAGRAM
KA2402
Î~ + 80Î
Fig. 1
元器件交易网
KA2402
ABSOLUTE MAXIMUM RATINGS (Ta = 25

IRLML2402 PDF规格书

0.54 A
7.4
1.2 V
■ Marking
Marking
1A**
IRLML2402 N-Channel MOSFET
ID , Drain-to-Source Current (A)
■ Typical Characterisitics
100 10
VGS
TOP
7.5V
5.0V
4.0V
3.5V
3.0V
SEE FIGURE 9
0
A
0.0
1.0
2.0
3.0
4.0
QG , Total Gate Charge (nC)
IRLML2402 N-Channel MOSFET
ISD , Reverse Drain Current (A) ID , Drain Current (A)
■ Typical Characterisitics
≤
Symbol VDS VGS
ID
IDM PD
dv/dt RthJA
TJ Tstg
Rating 20
±12 1.2 0.95 7.4 540 4.3 5 230 150 -55 to 150
Unit V
A
mW mW/℃
V/ns ℃/W
℃
IRLML2402 N-Channel MOSFET
■ Electrical Characteristics Ta = 25℃
Symbol
Test Conditions
Min Typ Max Unit
VDSS ID=250μA, VGS=0V
20
V
VDS=16V, VGS=0V IDSS
VDS=16V, VGS=0V, TJ=125℃

IRLML2402中文资料

ParameterTyp.Max.UnitsR θJAMaximum Junction-to-Ambient75100°C/WIRLML6402HEXFET ® Power MOSFETThese P-Channel MOSFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET ®power MOSFETs are well known for, provides the designer with an extremely efficient and reliable device for use in battery and load management.A thermally enhanced large pad leadframe has been incorporated into the standard SOT-23 package to produce a HEXFET Power MOSFET with the industry's smallest footprint. This package,dubbed the Micro3™, is ideal for applications where printed circuit board space is at a premium. The low profile (<1.1mm)of the Micro3 allows it to fit easily into extremely thin application environments such as portable electronics and PCMCIA cards.The thermal resistance and power dissipation are the best available.Thermal ResistancelUltra Low On-Resistance l P-Channel MOSFET l SOT-23 Footprint l Low Profile (<1.1mm)l Available in Tape and Reel l Fast SwitchingDescription8/13/99 1PD- 93755ParameterMax.UnitsV DSDrain- Source Voltage-20V I D @ T A = 25°C Continuous Drain Current, V GS @ -4.5V -3.7I D @ T A = 70°C Continuous Drain Current, V GS @ -4.5V -2.2AI DMPulsed Drain Current -22P D @T A = 25°C Power Dissipation 1.3P D @T A = 70°C Power Dissipation 0.8Linear Derating Factor0.01W/°C E AS Single Pulse Avalanche Energy 11mJ V GSGate-to-Source Voltage± 12V T J, T STGJunction and Storage Temperature Range-55 to + 150°CAbsolute Maximum RatingsW Micro3™IRLML6402IRLML6402IRLML6402IRLML6402IRLML6402IRLML6402IRLML6402。

RN2402中文资料

Characteristic
Collector-base voltage Collector-emitter voltage
Emitter-base voltage
Collector current Collector power dissipation Junction temperature Storage temperature range
元器件交易网
RN2401,RN2402,RN2403,RN2404,RN2405,RN2406
3
2001-06-07
元器件交易网
RN2401,RN2402,RN2403,RN2404,RN2405,RN2406
4
2001-06-07
元器件交易网
−1.52
−0.38
―
−0.71
−0.17
―
−0.082 ―
−0.33 mA
−0.15
−0.078 ― −0.145
−0.074 ― −0.138
30
―
―
50
―
―
70
―
―80
―
―
80
―
―
―
−0.1 −0.3
V
−1.1
―
−2.0
−1.2
―
−2.4
−1.3
―
−3.0
V
−1.5
―
−5.0
−0.6
―
―
― VCE = −0.2V ― IC = −5mA
―
―
― VCE = −5V, ― IC = −0.1mA
―
VCE = −10V, IC = −5mA
―
VCB = −10V, IE = 0 f = 1MHz

irf240参数及代换

irf240参数及代换
【原创版】
目录
1.介绍 IRF240
2.IRF240 的主要参数
3.IRF240 的代换方法
4.结论
正文
一、介绍 IRF240
IRF240 是一种场效应晶体管（FET），广泛应用于开关电源、马达驱动器、逆变器等电子设备中。

它具有良好的开关性能和高电流容量，可以承受较高的工作电压和温度。

二、IRF240 的主要参数
IRF240 的主要参数包括：
1.漏极电流（ID）：表示 FET 可以承受的最大电流。

2.漏极电压（Vdson）：表示 FET 的漏极可以承受的最大电压。

3.栅源电压（Vgs）：表示 FET 的控制电压，控制 FET 的导通和截止。

4.功率（Pdson）：表示 FET 的耗散功率，影响 FET 的使用寿命。

5.工作温度（Tj）：表示 FET 的正常工作温度范围。

三、IRF240 的代换方法
当需要用其他型号的 FET 替换 IRF240 时，需要考虑以下几个方面：
1.电流容量：选择与 IRF240 漏极电流相同的或更大的 FET。

2.电压参数：选择与 IRF240 漏极电压、栅源电压相同的或更大的
FET。

3.功率：选择与 IRF240 耗散功率相同的或更大的 FET。

4.工作温度：选择与 IRF240 工作温度相同的或更高的 FET。

四、结论
IRF240 是一种重要的 FET 型号，在电子设备中有广泛的应用。

FMR240技术资料

·高温型：适用于过程温度高达+200℃(+ 392°F) 的应用场合，采用高温天线时可达+400℃(+752°F )
·带屏蔽段的杆式天线：可在小管径安装短管及有冷凝和粘附的安装短管内进行可靠测量
·系统安全性符合IEC 61508/ IEC 61511-1标准，通过了SIL2认证
TI 345F/28/zh/v5.0
个人计算机带nifbus组态器电源电源调节器基金会现场总线ff连接操作与显示单元vu331附加功能阀门等fxa193micropilotmprosonicmlevelflexmtoftoolfieldtoolpackage4endresshausermicropilotm罐区内的系统集成若测量区中存在有多个罐体且每个罐体上都安装有一个或多个传感器如雷达单点或平均温度计水位检测中使用的电容检测探头及或压力传感器可采用endresshauser生产的罐旁指示仪nrf590它能为罐区系统提供集成通信
个人计算机（安装有 ToF Tool-FieldTool Package、 PLC Profiboard 和Proficard）
段耦合器
PROFIBUS DP
PROFIBUS PA
操作与显示单元 VU331
附加功能（阀门等）
Micropilot M
Prosonic M
Levelflex M
FXA193 ToF Tool-FieldTool Package
通过基金会现场总线（FF）的系统集成
总线上最多可连接32台变送器（标准场合、EEx em或EEx d场合）。应用于防爆级别为EEx ia IIC的区域中时，总线上可安装变送器的最大数目取决于本安型电路的既定规则和标准(EN 6007914)——本质安全电路验证。既可现场操作也可远程操作仪表。完整的测量系统包括：

爱默生变频器资料ES2402

产品信息变频器型号说明变频器铭牌说明变频器的铭牌说明如图所示：变频器铭牌变频器系列型号变频器系列型号见表所示：400V 系列变频器额定（380－480V ±10%）制动电阻的选择：*该建议的阻值为最低的阻值，通常可以按照该阻值的120%选择，这样就考虑到了制动电阻的热态和冷态的阻值的变化，通常需要制动电阻的阻值变化范围在5%。

** 制动功率通常可选曳引机功率的30%~40%，根据电梯的楼层高度和运行情况而定。

型号最大连续输出电流（A ）400V 时额定功率(KW)ES1405 7.6 3.0SIZE1ES1406 9.5 4.0 ES2401 135.5 ES2402 16.57.5 ES2403 25 11 SIZE2ES2404 29 13 ES3401 3215 ES3402 40 18.5 SIZE3 ES3403 46 22 ES4401 6030 ES4402 74 37 SIZE4 ES4403 9645型号制动电阻的建议的最低阻值（A ）＊制动电阻的建议的最小额定功率＊＊(KW)ES1405 58 0.8SIZE1ES1406 58 1.2 ES2401 19 1.5 ES2402 19 2.0 ES2403 19 3.0 SIZE2ES2404 19 3.5 ES3401 184.0 ES3402 185.5 SIZE3 ES3403 186.0 ES4401 117.5 ES4402 11 9.0 SIZE4 ES4403 910变频器结构变频器的结构图选配件变频器的选配件如图所示：变频器的选配件图选配件表随机附件变频器随机配备一份UNIDRIVE ES 用户手册、安全手册、合格证及一个附件工具箱（包括表所列各项附件）。

变频器附件快速操作指南介绍变频器用户界面、菜单结构及安全级别。

键盘介绍键盘,显示器由两行水平排列的7段LED组成。

上排显示区显示变频器状态、当前菜单及所查看的参数编号。

AT2402E 产品说明书

AT2402E 产品说明书版本更新历史版本日期更新内容1.02020/06/01初稿1.产品概述AT2402E是一款应用于无线通信的集成收发功能的射频前端单芯片，芯片内部集成了所需要的射频电路模块，集成度非常高，主要包括功率放大器(PA)，低噪声放大器(LNA)，收发模式切换的开关控制电路等电路子模块。

芯片集成了简单的低压控制逻辑电路，可以使用工作系统内较低的基带电压来控制芯片的工作模式。

芯片内部集成了天线端口，发射端口以及接收端口的射频阻抗匹配电路，可以不需要重新设计芯片的外围阻抗电路。

芯片内部还集成了必要的谐波滤波电路，无需复杂的外围滤波器，可以大大地降低芯片应用方案的复杂度并提高芯片的性能。

同时，该芯片还集成了功率检测电路，该检测电路可以非常准确地跟随输出功率的变化并输出相应的电压信号。

AT2402E主要是应用于工作于2.4GHz并符合802.11b/g/n/ac协议的无线通信系统中。

而且AT2402E采用CMOS工艺实现，具有非常低的成本并且具有非常好的射频性能，比如发射模式时高的功率增益，发射线性度和发射效率，以及接收模式下极低的噪声系数。

得益于AT2402E优秀的性价比，使得该芯片可以非常完美地解决无线通信单天线应用中的射频收发机前端方案。

下图1为AT2402E的功能模块示意图，主要含有三个射频输入输出端口，简单的逻辑控制输入端控制芯片的工作模式。

图1.AT2402E功能模块示意图2.芯片应用及特征2.1主要应用方向802.11b/g/n/ac多媒体设备应用802.11b/g/n/ac智能家居应用802.11b/g/n/ac无线通信网络平台2.4GHz工业自动化其他2.4GHz无线接入系统2.2芯片主要特征●应用于2.4GHz射频前端单芯片●芯片发射TX和接收RX端口分开，并使用单天线方案●功率放大器结构中内置低通滤波器和谐波滤波器●内置低噪声放大器和收发模式开关控制电路●功率放大器有非常好的线性度，可以满足OFDM和CCK调制信号的应用要求●内置输出功率检测电路，可满足输出功率监视和控制●逻辑控制电压可使用低电压到VDD的宽电压范围●所有端口均拥有非常好的ESD性能●所有的射频端口内部接地电位●所有电源端口均集成了射频信号旁路电路●接收模式下有非常低的噪声系数和非常强的功率处理能力●非常低的直流静态功耗●发射模式下非常低的工作电流●全集成射频输入输出端口的阻抗匹配电路，电阻均为50Ω●只需要非常少的外围器件●仅使用了可靠的CMOS工艺制作●采用16管脚的QFN封装(3×3×0.55mm)3.芯片描述3.1芯片管脚描述引脚编号引脚名称引脚描述1RX 接收射频信号的端口：直流到地4TX 发射射频信号的端口：直流到地5TXEN 发射使能的CMOS 控制端6RXEN 接收使能的CMOS 控制端7DET 输出功率检测，模拟电压输出端口10ANT功率放大器信号输出端或低噪声放大器信号输入端：直流到地2,3,8,9,11,12,15,17GND 地电位：使用中需全部连接到地13DNC 悬空端口14VDD 可选连接输入，内部已经连接到引脚16，可不连接16VDD电源电压输入引脚图2.AT2402E芯片管脚分布3.2AT2402E额定最大值参数单位最小值最大值条件电源电压V0 4.5芯片控制引脚电压V0 3.6通过1KOhm的电阻电流mA350当发射控制引脚TXEN为高电平时，通过电源电压的芯片引脚电流芯片控制引脚电流µuA1发射信号强度dBm+10所有工作状态天线接收信号强度dBm+5接收控制链路开启结温℃150芯片存储温度范围℃-50+150没有射频输入以及直流供电的情况下，以及需要根据晶体管结温的要求做一些适当的保护措施备注：超出上述一个或者几个绝对最大额定值可能会导致器件永久性损坏，建议在表中所列范围内使用。

HN-2402马达保护器定值整定参考书

HN-2402马达保护器定值整定参考书装置为电机“起动”与“运行”两种运行状态均配置了多种保护功能，能自动检测电机起动事件，判断电机“起动”状态向“运行”状态的转化，并能自动切换保护定值。

若Ia Ib Ic的值全部小于Ie的20%则装置判定为当前无电流，当有一相或多相的值大于Ie的20%时装置判定电机发生了起动，并从该时刻开始计时，装置执行“起动”状态下的保护功能，经过Ts时间后装置认为电机转入“运行”状态，执行“运行”状态下的保护功能。

若在Ts时间内电流消失，则装置自动退出当前“起动/运行”状态的判断，并重新开始监视电机起动。

起动状态下的保护功1起动短路：若电流i（i为Ia Ib Ic三中的1相或多相）大于保护整定值I，状态持续时间大于动作时间T则保护动作，动作出口位置为起动B出口（端子14-15），同时保护跳闸信号开出。

以下除零序I段保护外，其他保护出口位置同此。

建议整定值I为8~10倍的额定电流Ie,出口时间T 为0~1S2、起动堵转：原理及判据同“起动短路”。

建议整定值I为8~10倍的额定电流Ie,出口时间T 为0~1S3、起动低电压：当Uab Ubc Uca3相线电压全小于保护整定值U，且Ia Ib Ic三相电流中的任何1相电流i>Ie/5，状态持续时间大于动作时间T则保护动作。

建议整定值U为0.45~0.95倍额定电压Ue,出口时间T 为0.1~25S，参考值为0.7Ue,5S.。

4起动超长：从装置判定电机发生起动开始，若持续时间到达动作时间T时3相电流依然全部大于保护整定值则保护动作。

运行状态下的保护功能1、短路保护：为电动机相间短路故障的保护, 若电流i（i为Ia Ib Ic三相中的1相或多相）大于保护整定值I，状态持续时间大于动作时间T则保护动作。

建议整定值I为6~10倍的额定电流Ie,出口时间T 为0~5S；参考值为9Ie,0s.2、堵转保护：电动机在起动过程中，由于负荷过大或自身机械原因，造成电动机轴被卡住，而未及时解除故障，将造成电机过热，绝缘降低而烧毁电机，堵转保护适用于电动机起动发生此类故障时进行保护，若电流i（i为Ia Ib Ic三相中的1相或多相）大于保护整定值I，状态持续时间大于动作时间T则保护动作，避免电机烧毁。

irf240参数及代换

irf240参数及代换摘要：I.引言A.介绍IRF240 参数B.分析IRF240 参数的重要性II.IRF240 参数详解A.工作电压B.静态电流C.正向电压D.反向电压E.增益F.带宽III.IRF240 的代换A.选择合适的替代型号B.比较原型号与替代型号的参数差异C.考虑实际应用场景进行代换IV.总结A.强调IRF240 参数的重要性B.总结IRF240 参数及代换的关键点正文：【引言】在电子元器件选型过程中，IRF240 作为一种广泛应用的功率场效应晶体管，其参数的选择对整体电路性能有着至关重要的影响。

本文将详细介绍IRF240 的主要参数，并分析其在实际应用中的重要性。

此外，我们还将探讨在特定场景下，如何根据实际需求进行IRF240 的代换。

【IRF240 参数详解】IRF240 的主要参数包括工作电压、静态电流、正向电压、反向电压、增益和带宽等。

1.工作电压：IRF240 的工作电压范围为18-22V，在这个电压范围内，晶体管可以正常工作并发挥其性能。

2.静态电流：静态电流是指晶体管在没有信号输入时的电流，IRF240 的静态电流为1.5A。

3.正向电压：正向电压是指晶体管导通时的电压，IRF240 的正向电压为2V。

4.反向电压：反向电压是指晶体管截止时的电压，IRF240 的反向电压为-20V。

5.增益：增益是指晶体管的放大能力，IRF240 的增益为100。

6.带宽：带宽是指晶体管能够正常工作的频率范围，IRF240 的带宽为200MHz。

【IRF240 的代换】在实际应用中，有时需要根据实际需求对IRF240 进行代换。

选择合适的替代型号时，应充分考虑参数的兼容性，如工作电压、静态电流、正向电压、反向电压、增益和带宽等因素，确保替代型号能够满足电路性能要求。

在比较原型号与替代型号的参数差异时，需要关注各个参数的变动范围，以确保电路的稳定性和可靠性。

同时，根据实际应用场景进行代换，例如在特定环境温度下或特定电源电压下，需要确保替代型号依然能够正常工作。