Cell Battery Voltage Meter

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Thread Starter

Marcorivera

I'm looking for a circuit that has (for example) 5 or so LEDs to indicate the voltage on a capacitor or cell battery. I think that the circuit would need to be powered by the capacitor or battery.

Thoughts? The voltage will range from 1 to 3v.

Thanks for all help!
 
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SpaceNerdLisa

So, you'll want a fixed voltage reference so that you can compare the battery voltage. To drive LEDs you'll probably want a boost converter. With a battery below 2V-ish, the LEDs won't produce light.
 
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