How can I construct an electromagnetic brake, whereby the energization of an electromagnet coil would produce mechanical "drag" on a rotating shaft without the need for contact between the shaft and a brake pad?

Question

Benjamin Asiedu · Accepted Answer

This is precisely how a generator operates: it just outputs the generator's electrical power into a resistor. When an electric motor is rotated by a mechanical force, it can function as a generator as well. The brake can be turned on or off by varying the load resistor.

Sebastian Acosta · Answer

undefined Construct an electromagnetic brake by placing a laminated iron core within an electromagnet coil around the rotating shaft. When energized, the magnetic field induces eddy currents in the iron core, creating a resistive force and generating mechanical drag on the shaft without direct contact.