How can you get square wave for current in AC source?

To generate a square wave current from an AC source, you can use a solid-state device like a transistor or a thyristor as a switch, controlling the timing of when the current flows. By rapidly turning the switch on and off at a specific frequency, you can create a square wave output. Alternatively, you can use a waveform generator or function generator to directly produce a square wave signal that can be fed into a load. Ensure that the circuit components can handle the resulting voltage and current levels of the square wave.