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Old 11-24-2008, 01:58 AM   #3 (permalink)
NiHaoMike
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Quote:
Originally Posted by bbjsw10 View Post
Doax asked me about the monitor I made for this. Here is a schematic for this. Schematics Depot (tm) - 12v "high" or "low" battery monitor
That will not work. It is a Wheatstone bridge which means that one side will always be higher than the other or both sides will be equal regardless of supply voltage. But replace one resistor with a zener diode and it will work as intended.
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