With a transformer, you must have AC input because that’s what moves the magnetic field. Note you don’t have to have a sine wave, necessarily, just current that switches polarity fast enough ...

Last week I started out measuring mains frequency using an AC-AC wall wart adapter ... are also known as full-wave rectifiers because they take the alternating current and use both parts of ...

Typically, inverters take DC power created by batteries, and convert it to AC power ... are two different types: pure sine, and modified sine. A pure sine wave inverter produces a cleaner and ...