Making a momentary switch into latching ?

[kapri]

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 ?

[93fxdl]

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

[sidspop]

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

[kapri]

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?

[THE VIKING]

Here you go kev should find what you are after here

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

[THE VIKING]

http://www.the12volt.com/relays/relaydiagram52.html

[sidspop]

What application do you want it for?

[stueeee]

http://www.the12volt.com/relays/relaydiagram52.html

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

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

[zephyrc]

seems a little pointless to use 4-5 other relays instead of one latching relay,, especially when the latching relay is readily available

[kapri]

Thanks for all the help guys, I've been distracted at the mo as I need to sort Marians Figaro misfire .