I am repairing a vintage lamp and replacing the socket with a dimmer socket.
When I do a continuity test on the old socket, both the hot and neutral lines work. That is, they make a high-pitch noise telling me the circuit is closed.
Now, when I try this same test with the new dimmer socket, the continuity test only works on the hot line. I don't get any indication of a closed socket when testing the neutral line. Conventional wisdom tells me that there is something wrong with this socket, but I actually went back to the store and tested another socket, and experienced the same thing.
The old socket is dead-simple -- there are no special electronics in it. The new dimmer socket is a lot more complicated with a potentiometer, capacitors, resistors, etc:
My question is, is there a logical/electrical reason that this socket works correctly, but doesn't give me a successful continuity test on the neutral line?