Voltage switch

Discussion in 'The Projects Forum' started by mattwind, Dec 3, 2008.

  1. mattwind

    Thread Starter New Member

    Dec 3, 2008
    2
    0
    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.
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    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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