Hi there - I'm looking for the functionality of a normally closed, single pole single throw (SPST) relay.
Now - I know of the existence of SSRs. However, I think they may all be NO. See - I need this relay to be closed when this circuit is not powered, and then I need it to open when the circuit is powered. As in - there will be no power available on this board when the relay needs to be closed.
A normal SPST NC relay would work great - but I don't want to use one due to the size, weight, driving current, vibration sensitivity, and cost of the part.
If it matters, current will only flow in one direction through this part.
Anybody know of any component with these properties? I can't think of anything.