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12vdc latching relay - one pulse on/off - wanted

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by easytim, Feb 1, 2009.

  1. easytim

    easytim New Member

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    I needed a 12vdc latching relay that will latch on with one pulse, then latch off with the same pulse.

    My power source is 12vdc and I'm using a touch circuit with a relay rated at 1 amp for its output.

    Does anyone know where I might find a prebuilt kit that latches using 12vdc as its power source?

    Touch it, it stays on, touch it again it turns off.
     
    Last edited: Feb 1, 2009
  2. Leftyretro

    Leftyretro New Member

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    What contact voltage and current rating do you require? Do you need a two coil latching relay or will a single coil version work, that is do you have two seperate pulse signals or just one? Also need to know the voltage (12v?) and current capacity of what ever is generating the pulse signal.

    Remember you can use lower voltage relay coil and just add a series resistor and run it at a high voltage.

    Lefty
     
  3. easytim

    easytim New Member

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    I have one seperate pulse

    I am powering the signal with a N.O. contact at 12vdc

    I have a small electronic touch switch that uses 12vdc with a small relay on the board, what I need to do is latch its output when it is touch switch is touched. I will be switching under 1 amp to power two small transformers (wall warts) that power some LED lights
     
  4. dave

    Dave New Member

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  5. ccurtis

    ccurtis Active Member

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  6. hotwaterwizard

    hotwaterwizard Active Member

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    The Link does not work anymore
     
  7. graynomad

    graynomad New Member

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    I don't think it's possible to get a "toggling" relay that only needs a single control pin and even if you can you have issues with knowing what state it's in.

    All latching relays I've seen need two control lines.

    ______
    Rob
     
    Last edited: Jan 15, 2011
  8. Mosaic

    Mosaic Well-Known Member

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  9. ccurtis

    ccurtis Active Member

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    Here's the file attached, since the link no longer works.
     

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  10. hotwaterwizard

    hotwaterwizard Active Member

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    I know this is old but, I couldn't help it.
     

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  11. ljcox

    ljcox Well-Known Member

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    Here is a relay flip flop.
     

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  12. hotwaterwizard

    hotwaterwizard Active Member

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  13. fasta

    fasta New Member

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    Awesome worked great attached it to dpdt relay to make a polarity changer to run a blind, Projector lifter and a 150" conceiled screen.
    All in a days work
    driven my
     

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