Latching relay?

Discussion in 'Tech/Mech General' started by simbadog, Feb 19, 2015.

  1. simbadog

    simbadog Funster

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    This may sound a silly question but I need a bit of advice. I have a 12v push button intermittent switch, ie. only sends current when held in.
    I want to use this to turn on & off a small LED light, can I do this using a relay & if so what do I need? I can provide a permanent fused 12v feed to the relay. Changing the switch is not an option as it matches everything else on a panel
     
  2. Borderland

    Borderland Funster

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    Yes you can use a latching relay but you have to be able to remove the 12v supply for it to switch off which may mean having a separate off button.
     
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  3. pappajohn

    pappajohn Funster Life Member

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    Easy....

    Switch needs disconnecting fully and one side sent to earth...other side to relay as shown..
    that will be an earth trigger switch as shown.
    red to 12v supply
    purple to 12v accessory.

    http://www.the12volt.com/relays/page5.asp


    [​IMG]
     
    Last edited: Feb 19, 2015
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  4. tonyidle

    tonyidle Funster

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  5. Pat4Neil

    Pat4Neil

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    It might be worth considering changing the switch to a latching switch as oppose to a momentary switch, which is what you have now

    Neil
     
  6. pappajohn

    pappajohn Funster Life Member

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  7. pappajohn

    pappajohn Funster Life Member

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  8. Glandwr

    Glandwr Funster

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    I'd love to be let off duties by claiming that I have to keep my finger on the button. Is that not an option?

    Dick
     
  9. Techno

    Techno Funster Life Member

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    Last edited: Feb 22, 2015
  10. tonyidle

    tonyidle Funster

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