Voltage switch

Thread Starter

mattwind

Joined Dec 3, 2008
2
Hi all. I am looking for a schematic for a voltage switch. I need it to monitor a 12 volt bank of bats. I need it to have an output of 12 vdc. I need it to have ajustments for the high set point (13 volts dc) and a low set point of (10.0 volts dc) I need the output to be able to energize a small ice cube relay when the high set point is made and de-energize or turn off at the low set point.

any ideas.
 

bertus

Joined Apr 5, 2008
19,939
Hello,

As you describe it you will need two comparators and a flip-flop.
One comparator to detect the high level that triggers the flip-flop to attract the ralay.
One comparator to detect the low level that triggers the flip-flop to let the relay fall off.

Greetinfs,
Bertus
 
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