DPDT relay alternative

Discussion in 'The Projects Forum' started by RodneyB, Jun 10, 2014.

  1. RodneyB

    Thread Starter Active Member

    Apr 28, 2012
    633
    13
    I am making a pool ioniser. It is powered from a Polycrystalline silicon solar panel.

    Optimum operating voltage is 6 Volts and the optimum operating current is 0.05 amps.

    The circuit supplies 2 copper electrodes. I want to make them alternate every hour and was using a double pole double toggle relay wired as per attached drawing.

    I have a PIC10F200 which I can get it to toggle the output. I just don't know how or what I could uses in place of the relay.

    Any assistance will be greatly appreciated
     
  2. prairietech

    New Member

    Mar 12, 2013
    5
    0
    The relay you attached should work fine. Why are you trying to find a substitute?
    If you do use a relay, be sure the include a subbing diode across the relay coil to prevent damage to the output of your PIC.
     
  3. inwo

    Well-Known Member

    Nov 7, 2013
    2,433
    315
    An h bridge should work as a substitute.

    The relay however will not work as shown, as when NO. contacts close, it connects + to -.
     
    Last edited: Jun 10, 2014
  4. #12

    Expert

    Nov 30, 2010
    16,267
    6,778
    You got your criss-cross in the wrong place.
     
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