Simple battery monitor circuit

1151

20:07:44

The 9V source represents a battery. When the voltage gets low (around 6V), the red led will come on indicating it's time to replace the battery because it's out of juice. Vary thr voltage from the source to see this effect yourself. :)

published 10 years ago

pulkit1

10 years ago

Great now i understand how it works

kaivanveldhoven

10 years ago

@pulkit1 👍👍 :)

fifof

10 years ago

Unfortunately this circuit drains so much power, that the red LED will be on very fast....

rich11292000

10 years ago

Yup

kaivanveldhoven

10 years ago

It's pretty inefficient, I gotta agree.

ichunddu

10 years ago

Simple but drain the battery too much

kaivanveldhoven

10 years ago

@ichunddu Yes, I believe that's been said before..

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