Making a momentary switch into latching ?
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  1. #1
    Off the Xmas card list kapri's Avatar
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    Making a momentary switch into latching ?

    Yes, I know it would be easier to buy a latching switch in the first place but I'm not finding what I want . Does anyone have a circuit of how to make a momentary switch 'latch' via relays etc ?
    That's one comfortable sleeping donkey.

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    Rods 'n' Sods Junkie
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    93fxdl is offline
    not being an electriceral type i cannot provide concise info but there are latching relays which once switced with a pulse stay there until pulsed again when they open
    off the wall maybe but would a headlamp relay do the job as a some cars have a momentary switch to swap between high and low
    hope this helps
    ttfn glenn

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    Semi Proffessional Prat sidspop's Avatar
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    I can try to describe it, may not make that much sense though Kev!

    Take poitive feed to coil via momentary switch, with negative to other side of coil.
    Take positive feed to relay connector.
    Take switched positive to load, and also back to coil positive.

    Thus when pushing switch, the coil energises, putting volts on the guzouter pin. That is also fed back to the coil guziner, keeping it energised.

    I would have drawn a comic, but can't find the program I want.

    Make sense??

    Andy

  5. #4
    Off the Xmas card list kapri's Avatar
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    Understand that bit Andy ( surprisingly ! )but how how does it turn back off , another relay closing one of the other circuits on the first relay?
    That's one comfortable sleeping donkey.

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    Official RnS Addict THE VIKING's Avatar
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    Here you go kev should find what you are after here

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

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    Official RnS Addict THE VIKING's Avatar
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  8. #7
    Semi Proffessional Prat sidspop's Avatar
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    What application do you want it for?

  9. #8
    I'm Not Jed Clampett stueeee's Avatar
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    Quote Originally Posted by THE VIKING View Post

    This one allows the use the same switch to turn off and turn on

    http://www.the12volt.com/relays/page5.asp#lsp
    Stuart.
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    Rods 'n' Sods Junkie
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    seems a little pointless to use 4-5 other relays instead of one latching relay,, especially when the latching relay is readily available

  11. #10
    Off the Xmas card list kapri's Avatar
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    Thanks for all the help guys, I've been distracted at the mo as I need to sort Marians Figaro misfire .
    That's one comfortable sleeping donkey.

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