Quote:
Originally Posted by Ultramaroon
I see what you want there and it's a pretty good idea. Although it would be more efficient to do it with op amps to make a flip-flop, you can also make a latching circuit with a double-ganged NO relay.
The second gang runs in parallel with your momentary switch so it keeps the relay energized when closed. The only way to release the latching circuit is to remove power.
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First off, I want to thank everyone for their replies so far. I've been Googling some of the terms you guys use, but bear in mind that I know NOTHING of electronics other than what I've managed to cobble together with relays from RadioShack, so almost all of that terminology is stuff I have to look up before I even begin to understand you, lol.
As far as running in parallel, I don't want any part of the circuit to have to remain continuously powered. I want the relay to remember the last position, even when the car is completely powered off. The cigarette lighter only receives power when the ignition is on. I could wire it to a constant +12V source, but I don't want any battery drain at all when the car is off. However, I DO want it to remember which state it is in because I want the chirp I use with the remote when I lock the car to be able to come from either horn set, as it would be an easy way to show friends without having to get into the car, start it, press a toggle switch to "activate" the alternate relay, and then tap the horn.