Battery status indicator circuit diagram


Posted on Mar 28, 2007

741 op amp can be used as a voltage comparator. Non-inverting input and a zener control source. The reference voltage is 5.1V. R2 can adjust the in-phase input voltage becomes


Battery status indicator circuit diagram
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half the supply voltage. When the supply voltage is higher than 10.2V, the light emitting diode will not light up.




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