LED 12V Lead Acid Battery Meter with LM339

In the circuit below, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, lead acid battery.

This entry was posted on Friday, May 30th, 2008 at 10:28 pm and is filed under Flasher, battery, led display. You can feed this entry. Responses are currently closed, but you can trackback from your own site.