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汽车电池电压监视器的设计原理

这个电路实际为一个电压比较器。它以1伏为单位监视汽车电池电压。由D1构成IC1A基准电压接于比较器的反相端,由R2、R3、R4及RV1组成分压电路分别为另外三个比较器提供参考电压。RV1在调试电路时,可调节每路监视电压的输出值。

  

  R1=1K2 R6=10K D2-3-4-5=LED

  R2-3-4=680R R7-8-9-10=1K IC1=LM324

  R5=15K D1=5V6 /0.5W RV1=10K

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