Relay Schematic

I have a 1 volt signal that I need to latch open a 12 volt circuit for about a minute. Does anyone have a schematic?

 


Use a transistor to boost your signal, and then drive the relay, or the circuit.
Don't know if you will find a relay that will have a coil that can be energized at just 1V. I think 1.5V is the lowest i've seen.

But to answer your question. You can find all sorts of great tutorials about relays with a google search.

For example. http://www.r1200gs.info/howto/relay.html