Battery indicator


Posted on Jun 3, 2012    3353

Continually monitors battery voltage during use and consumes only about 250 ? A (until the end point is reached). Near the end point Trl turns off, allowing Tr2 to illuminate the LED to increase current drain further leading to a distinct turn off point.


Battery indicator
Click here to download the full size of the above Circuit.

Use a low current LED diode.




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