I want to BIST some (actually, a lot of) relay contacts in a product. I need a floating continuity tester.
This is one idea:
The relays should be isolated when tested, but in certain fault situations might have a lot of voltage across them, say 240 AC, and I don't want to incinerate the tester.
Ixys makes a self-protecting current-limiting SSR, like 200 mA and 350 volts AC. It would work as a convenient current limiter.
Any suggestions?