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  1. #1
    Warren fsaviator's Avatar
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    Relays and Solenoid switches

    Hello all,

    can someone give me a quick once over on how to wire up my new simworld solenoid switches with my OC Mastercards. I'm tracking on needing 12VDC and a relay. I'm looking for a quick wiring diagram that explains:

    -what two pins I jumper with a diode
    -what two pins I connect 12VDC to
    -what two pins I connect the solenoid to
    -what pins are input to the Mastercard

    I have access to these relays:
    http://www.conrad.com/ce/en/product/...-12Vdc-SPDT-CO
    and
    http://www.conrad.com/ce/en/product/...2Vdc-1-CO-SPDT

    Thanks! While I understand the concept I can't wrap my head around it.

  2. #2
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    Perik's Avatar
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    Re: Relays and Solenoid switches

    Hello Warren

    I expect the toggle you referring to is this:
    http://www.simworld.pl/shop/product_...products_id=85

    Do you happen to know the specification of the Solenoid Simworld uses «inside» the toggle other than 12V and minimum 1A fly-back diode. Could you measure the coil resistance and does the Solenoid actively “hold” the toggle in place or just kicks in when releasing.

    The easiest way of doing this is to add a NPN transistor to an Output pin of MasterCard. By this you don’t need any extra Relay – just make a small PCB with the TIP122, R1 and the Fly-back diode….

    Here is some more theory and a link to TIP122 Darlington which is just one of many options.
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    Regards,
    Per-Erik
    www.hoddo.net

  3. #3
    Warren fsaviator's Avatar
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    Re: Relays and Solenoid switches

    Thanks Per-Erik. I should also mention that I have 5V relays too. That may be easier?

  4. #4
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    Perik's Avatar
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    Re: Relays and Solenoid switches

    Warren.

    My «plan» was to suggest running without a Relay.
    If you have a TTL compliant Relay that’s a different story
    and for sure something to consider.

    Again nice to know the specification of the 5V Relay?
    Regards,
    Per-Erik
    www.hoddo.net