They are helpful on how to measure current without using current. But now I'm curious on if there is a sensor to turn a relay back on. I don't believe these methods suggested would work besides the "quantum oscillator " which I do not fully understand.
I was worried if I responded to that...
I'm trying to figure out a way to turn a relay back on with a sensor. This relay is attached to a device that is plugged into a wall. I was thinking of using a non-invasice current sensor but I don't know if there will be a significant current change, if any, once I turn the device on, if the...
I need to use a sensor to determine if a wire is turned on without using a voltage or current sensor.
I've been playing with using a capacitance sensor or sending a small signal