蓝牙音箱电路图
DIY时尚蓝牙音箱电路图
DIY时尚蓝牙音箱电路图
•详细说明
材料：音箱1只，蓝牙耳机主板1块，锂电池1块，开关按键两个，长的按键压杆2个，导线若干。
做法：将蓝牙耳机的各按键外引，更换电池，耳机线外引。
原理框图见下图。
制作过程：
1．将原蓝牙耳机电池换成容量更大的诺基亚手机锂电池，同时引出正负极，做充电接口。
2．将蓝牙耳机的“音量增加”和“音量减小”的按键接出引线，外接按键。
3．保持蓝牙耳机的“蓝牙打开按键”不动，在其上方加一个按键压杆。
4．将蓝牙耳机原听筒拆除，导线外引，接音箱的音频输入。
5．最后，用热熔胶和透明胶带进行固定，组装。
至此，蓝牙音箱DIY就大功告威了。
与电脑进行蓝牙配对后，就能像使用蓝牙耳机那样使用蓝牙音箱了。
其优点在于，大容量的电池让蓝牙使用时间更长，而且不再受“线”制，十分方便。
蓝牙音箱电路原理
蓝牙音箱电路原理
蓝牙音箱电路原理简介
蓝牙音箱是一种无线音箱，通过蓝牙技术实现音频的传输和播放。
它由多个电路组成，包括电源电路、音频放大电路和蓝牙模块。
1. 电源电路：蓝牙音箱需要一定的电源供应来工作。
电源电路通常由直流电源电池或者充电器提供电流。
电源电路还会包括一些电源管理电路，例如充电保护电路和低电量提醒电路，以保障音箱的正常工作和使用寿命。
2. 音频放大电路：蓝牙音箱的音频放大电路是关键的部分，它负责将蓝牙模块接收到的声音信号放大到合适的音量。
音频放大电路通常包括一个混合电路和一个功放电路。
混合电路用于将输入的模拟音频信号转换成数字信号，然后通过功放电路放大输出到音箱的扬声器。
3. 蓝牙模块：蓝牙音箱使用蓝牙模块来接收和传输音频信号。
蓝牙模块通常内置一个蓝牙芯片，它能够与其他蓝牙设备进行通信和连接。
通过蓝牙模块，音箱可以接收来自其他蓝牙设备（如手机、电脑等）传输的音频信号，然后播放出来。
蓝牙音箱电路原理的基本原理就是以上三个方面的组合。
电源电路提供电源供应，音频放大电路将输入的信号放大，蓝牙模块实现无线传输和连接。
通过这些电路的协同工作，蓝牙音箱可以实现音频的无线传输和播放。
蓝牙音响设计原理图参考
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AC6905B单喇叭蓝牙方案标准原理图V1.0
L1 0R C12 105 C8 105
C3 2.7P BT_ANT L3 NC DACL
MUTE C14 225 C13 LPF 104
1 2 3 4
SPK-
R2 7.5K
R3 33K
SPK+ SPK-
C
J1 SPK
MCU
+3.3V
R4 22K ADKEY C19 NC/100P
D
Y1 BTOSCO C1 NC
24M BTOSCI C2 NC BT_ANT
VMCU
R1 100K U2 XPT4871
FM_ANT FM_ANT
C10 102
C
L2 100nH
C11 24pF
1 2 3 4 5 6 7 8 9 10 11 12
PC5/SD1CLK BT_OSCO PC4/SD1CMD BT_OSCI USBDM/PC3/SD1DAT AVSS1 USBDP/PA4/AUX1R BT_RF PB13/MIC/PA3/AUX1L AVSS2 PA1/AUX0L BT_AVDD DACL LDO_IN DACVDD VSSIO VCOM ADC8/PB9 FMIP ADC9/SD0DAT/PB10 DACVSS ADC10/AUX2L/SD0CMD/PB11 VDDIO ADC11/AUX2R/SD0CLK/PB12
S1 P/P/FM_SCAN
0V 0.4V DACVDD 1.0V 1.7V
C16 NC R10 6.8K R11 4.7R C18 104 MIC C17 NC
R5 3K
Hale Waihona Puke S2 PREV/V-/CHS3 NEXT/V+/CH+ S4 MODE S5 TALK
全网首拆Sansui山水T20无线蓝牙音箱电路图
全网首拆Sansui山水T20无线蓝牙音箱电路图很早前就看着这个音响了，主要是看在时间显示上，其他也没什么特色。
但是价格一直感觉有点贵了，最便宜的一次是99包邮，结果拍下还是犹豫了一天，结果订单被取消了......后面这款一直就159或179的价格。
后来，偶然闲鱼搜了下，有的在叫卖新的88，但是还是没买，看见一个妹子买的二手70，说是有9成新，于是拍了，到手后过然很新，前面镜面的膜都还在，撕开简直就是全新。
当然，新的也不想拆了。
但是做时钟显示用，一晚上居然从40%的电就掉到15%，15%以后就不能显示是时间了，一直一闪一闪亮晶晶。
于是，打算拆了看看，能不能加个电池进去。
但是网上又没拆机图，该从哪里拆呢？金属网下面还是硅胶垫？于是看是研究起来。
镜面时钟显示，这个图倒了。
[attachment=10327114]时钟和播放音乐是分开控制的，按键互不干扰[attachment=10327113]背面是各种接口和总开关，关了开关时间也不会显示了，但是时间继续在走。
金属网中间是一个低音震膜，喇叭位于左侧和右侧，并不在背面。
[attachment=10327112]底部一大块防滑硅胶[attachment=10327111]底部螺丝排布情况，必须先从底部打开才能拆其他地方。
拆开后就是这个情况，只能看见震膜和两个4欧5W的全频喇叭。
说实话这喇叭不咋地。
接下来是拆顶上的盖子，有五个螺丝，要细长点的螺丝刀拆能拆到边上的四个螺丝。
拆了还是取不掉顶盖，因为还有镜面下面还有一个螺丝。
（拆镜面步骤没拍，可以用加热工具辅助）黄色标明的，蓝色的是显示屏固定螺丝。
将这些螺丝都拿下来，顶盖下面是这个样子。
显示屏下面是电池仓，明明可以放两个，居然只用了一个2500的18650.主板正反面如下，一个主控，两个功放，一个收音机，一个蓝牙,还有升降压。
显示屏正反面,明明有温度显示得LED，结果这款是显示不出来的，不知道是怎么设计的。
把电池换成两个充电宝拆的18650，2600毫安的。
AC6951C蓝牙音箱方案标准原理图V1.1
C308 105
AUXR
AUXL
C307 105 R305 10K
MIC_BIAS
C302 NC
C309 104
MIC
+ M301 MIC
MIC、PA、Earphone，AUX
B
6
VMCU
C601 224
C602 225
USB5V
U601
6 5 4
C+ VIN C-
VOUT GND EN2、内 Nhomakorabea 锂电 的方 案，RTCVDD可不 接纽 扣电 池，也支 持走 时
C
3、无时 钟的 方案 ，32K晶振 和RTCVDD引脚 悬空
C106 105 C107 105 C108 105
BT_ANT
C104 15P C105 15P
Y101
32.768K
C109
SD_DAT VMCU
+3.3V RTCVDD
注：原理 图中 注释 说明 设计时 需特 别注 意
D
FM_ANT
L101 102P
L102 NC
C101 NC
C102 105
C103 105
SD_CMD SD_CLK PHIN LINEIN AUXL AUXR SD_PWR FM_ANT DACR DACL DACVDD VCOM
48 47 46 45 44 43 42 41 40 39 38 37
D2 D3/CS CMD/DI VSS VDD CLK VSS D0/DO D1
A
3.3K
SD_DET
10 11 12
CD WP SHEET
SD
KEY、SD
13
AC6929C纯蓝牙音箱标准原理图V1.0
OUTN 10
CS8326C
SPK-
R3 22K
C
NC
AC6929C_SOP16
RTCVDD
R6
22K
S1
B
AD_KEY
Power/P/P
0V
C25 NC/100P
R8
S2
33K
PREV/V-
2.0V
R9
S3
51K
NEXT/V+
2.3V
R10 100K
S4 TALK
2.7V
A
KEY
DACVDD
C4 NC
D1
C7 470uF
L2
5
4.7uH
6
D2
9
C9 C12
106 105
LX LX
PVDD
PGND GND GND GND GND
11 1 4 8 7
C11
R4 C22 104 30K
15 IN+
OUTP 12 SPK+
DACL 105
C21 104
R2 22K
R5 C23 104 30K
16 IN-
C3 NC
R11 6.8K
C26 MIC
+
104/224
M1
MIC
MCU
VIN VBAT
7
NC R18
1K
Q1
R16
8850C/9015C
10K D4
BT_LED
D5 RED
BLUE
MIC、LED
6
6
L6
C24
SPK+
1nF
FB
J1
SPK
JL杰理蓝牙音箱AC925F标准原理图标准软件_V1
晶振选型：
封装：兼容3225，M49S，HC49S等封装 要求：稳定性、一致性要好，
频偏偏差：±10PPM以内 电容：晶振匹配电容位置请预留
Y1 OSCI
24MHZ OSCO
BT_ANT
4 3
SDCLK SDCMD SDDAT MIC
C14 105 C6 105 C7 105
U1
B_LED
1 PC5/SD1CLKA
MCU D
C
1
2
设计注意事项： 1、主控所有电源的退耦电容必须靠近芯片放置，
退耦电容的回路地必须最短回到该电源地. 2、蓝牙匹配电路参数以调试结果为准 3、对FM要求比较高的客户，请预留FM放大电路，
灵敏度可提升2dBu以上。FM信号线铺地,
间距至少0. 6MM以上。qq:298391364
4、为保证产品的安全可靠性，电池必须用带保护板的电池。
OSCO OSCI GND
BT_RF BTAVDD AD_KEY MUTE RTCVDD VMCU AUXL AUXR
做耳机使用时接耳机喇叭共用负极
C15 C10 105
2P7
蓝牙天线接法适用倒F型天线 其它的天线要加增益网络
C8 105 C9 105
B_LED R8 1K
播放指示灯
BLED
3
4
音频电路
要音量记忆，开机时是上一次关机时的音量
R9 10K
U2 HX8018
MUTE
1 SD
8 VOP
SPK
C5
105 2
7
1
BYP
GND
+
R3
NC 3
MODE
6 VDD
VMCU
AC6951C蓝牙音箱方案标准原理图V1.1
3 8
BYP BYP
C314 105
C315 105
MIX3901
FB 21
R316 56K 1%
R317
12K 1%
LOUTP LOUTN
11 10
LSPK+ LSPK-
ROUTP ROUTN
14 15
RSPK+ RSPK-
R318
COMP SS
1 2
4.7K
C330 473
C331 472
PGND PGND PGND
背光
J502 BL 1
2
R502 330R/NC
BL_LIGHT R503 NC
BL_LIGHT
R501
3K/NC Q501
9014C/NC
R504 NC
U501 IR
1 IR 2 GND 3 VCC
IRDA
DACVDD
C504 NC/105
红外 接收 头供 电接 DACVDD
LED、LCD、IR
功 放端 物料 ， 根 据实 际电 路去 精 简
10 LCD_RES
11 LCD_CS
+3.3V
C503 104
LCD128*64-11P
J501
MP3
FM
C/S C/S C/S C/S C/S C/S C/S
7 6 5 4 3 2 1
C/S7 C/S6 C/S5 C/S4 C/S3 C/S2 C/S1
II SD
USB
LED-4_8S-7P
VMCU
DACVSS HPVDD
SEG20/MIC/PC6 AUX0L/SEG21/SEG0/MIC_BIAS/PA0/PC7
AB5301A 软开关蓝牙音箱电路图
IR1
IR
U1 LQFP48 7*7--AB5301A
设计注意事项：
1.主控退耦电容，尽量靠近主控。回路尽量短。 2.若不使用BUCK低功耗模式，LX 10uH改为NC，VDDBT 10uF电容改为NC。 3.FM_ANT铺地间距至少20mil以上。走线尽量短。 4.104可以改用224代替。105可改用225代替。 5.晶振频偏可使用原厂提供的测试盒无线测试与校正。 6.晶振规格：26M_9pF或7.5pF负载_+-10ppm。 7.程序可以设置长按PWRKEY 10S复位。或者VUSB充电插入复位。 8.PWRKEY低于0.6V为逻辑低。复位源与开机触发有效。 9.收音要求高，FM_ANT请串联电感到天线。要求不高，可以使用0R。
6.PE0为特殊高压PIN，建议作为MUTE使用。
6 7 8 9
可用于高MUTE功放的MUTE脚，可实现Hale Waihona Puke 机不漏电的效果。GND
GND
7.软关机主控电流3.8uA。
POWER
软开关方案
1
2
3
4
5
PE0为特殊高压PIN。 VMCU
在用于高MUTE功放时，
可实现关机不漏电的效果。 R24 100K
MUTE 1
SPDIF PWM LPWM SPI
IIS IR
SPDIF0
L0-G3
IISDI1
SPDIF1
L1-G3
IISDO1
L2-G3 SPI1DI1 IISSCLK1
L3-G3 SPI1CLK1IISLRCLK1
SPI1DO1 IISMCLK1
P0-T4
SPI1DI2
IR1
P1-T4
SPI1CLK2
迷你蓝牙音箱电路图
（4）另外LM358主要用来做平衡及蓝牙信号二次放大。
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本文由入驻电子说专栏的作者撰写或者网上转载观点仅代表作者本人不代表电子发烧友网立场
迷你蓝牙音箱电路图
佚名 发表于 2014-03-11 17:02:35
下图为比较典型ห้องสมุดไป่ตู้牙小音箱设计原理图，其主要器件为：
（1）接收模块采用的是OVC蓝牙模块，优势是相比较CSR的方案成本便宜；
（2）功放IC选择的是HT6809，其独有的防削顶失真功能可保证扬声器在大功率输出的同时不出现明显的破音；