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Recent content by cummins2

  1. cummins2

    Led circuit help

    I have looked into the RM4-UA relays and also using a op-amp comparator circuit. the problem I see using these is I have no supply voltage to power the relay or to give a reference voltage to an op-amp. the only voltage that is present is the analog voltage that I am trying to turn the led on with.
  2. cummins2

    Led circuit help

    Sorry for my handicap in electrical circuits. I have a 24Vac circuit that I need an led to turn on and off at specific voltages. The voltage will start out at 0VAC as voltage rises to 24vac I need the led to turn on at around 21.6vac. If voltage falls I do not want the led to turn off until it...
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