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How to make a low battery state on a smoke detector

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nandrei

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Hi, I am starting to learn electronics and I want to make a low battery condition on a smoke detector.

I wanted to do this with 12Vdc from a PC power supply and a potentiometer in series, but the detector shuts down when I adjust the potentiometer.

Do you have any ideas how to do this?
 

tpetar

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See this example:

Low Battery Indicator I Circuit Diagram_1299097415038.jpeg
 

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