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Time delay relay controlled by a remote potentiometer

Discussion in 'Electronic Design' started by Ignoramus24136, May 22, 2006.

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  1. I would like to find a time delay relay (12v would be fine), with
    delay value that could be controlled by a remote potentiometer. I want
    to mount relays on my control board, and the pot to mount on the
    control panel. Ability to switch 120V is a plus. Any ideas?

    I need both time delay on and time delay off (for TIG gas control).

  2. scada

    scada Guest

    Try , if you don't see exactly what you want they will make
    it to your specs.
  3. Glen Walpert

    Glen Walpert Guest

    How about just yank the potentiometer out of a time delay relay that
    has one, and mount it on your front panel? Or mount the TD relay to
    the panel with the knob sticking out?

    The delay on is not really required for manual TIG, you can tap the
    footpedal to start the gas while holding the torch away from the work,
    then start welding after gas flow is well started but before the delay
    off timer turns it off.
  4. ehsjr

    ehsjr Guest

    V+ ---+----+---[Relay]---+----+
    | | | |
    | +------|<-----+ |
    | |
    o |
    PB| /c
    o---+-----+----[R]----| NPN darlington
    A | | \e
    | P |
    [C] o<--+ |
    | T | |
    | | | |
    Gnd ------+-----+---+---------+

    Press the pushbutton or put +V on point A to
    energize the relay. Timing starts when + is
    removed from point A and ends when the relay

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