I have been using an inductor around a 230V AC wire ground-side of the switch to check for current in a wire, it is part of control mechanism.
I have to add a rectifier now, so occasionally the current will be ~400V DC when rectified, and it has to be before the switch.
Will DC current induce voltage in my coil? I think it has to be a varying field, but I cannot check for a few days and its driving me mad!
I cannot put the inductor before the rectifier due to the design of the circuit, and also because it will couple it with the positive mains pin and I get false readings.
Can anyone put my mind at ease?
edit: I have a home made toroidal coil with a ferrite core and a 100ohm resistor across the outputs, that feeds into into a Peak Amplifier,
I am asking if this will work at all/nominally when the current changes from AC to Higher voltage DC.