When energized with a fixed AC source, the output signal is linear within a specified range over the angular displacement.

The concept in this topology can be extended to a voltage quadrupler circuit by using two Greinacher cells of opposite polarities driven from the same AC source.

Rotary converters were also used, especially where the desired output was DC current from an AC source.

VFDs that operate directly from an AC source without first converting it to DC are called cycloconverters.

Many stand-alone inverters also incorporate integral battery chargers to replenish the battery from an AC source, when available.

When driven from an AC source, both electrodes will glow (each during alternate half cycles).

The metal ring is large in diameter and is magnetically interlinked with an electrical winding energized by an AC source.

The reservoir capacitor releases its stored energy during the part of the AC cycle when the AC source does not supply any power.

The stack is induced to vibrate by an external coil connected to an AC source.

Historically a "transverter" was an electromechanical device used to produce high-voltage direct current from AC sources for long distance transmission, invented in Britain in the 1920s.