Use DC resistor in 220 V AC circuit


Can I use DC resistors as AC resistor? If yes, is there any problem interfacing with it? Please recommend AC resistors for working with 220 V AC 50 Hz.

Best Answer

There's not really any such thing as a "DC resistor." Because they do not alter phase, except in very special circumstances, all resistors work at 50Hz or at 0Hz (DC).

The minor exception would be something like a wire-wound resistor which has reactance as well as resistance, but unless you're building a power supply, this can usually be ignored.

You may also find this resistor primer from a resistor manufacturer to be of interest.