…a device consisting of a mechanically coupled electric motor and generator that may be used to control the voltage, frequency, or phase of an electrical supply…
…any of various devices used to build up an electric charge to an extreme potential in order to generate electricity, especially the Van de Graaf generator…
…a machine devised to produce a high voltage by means of an endless belt collecting electrostatic charge from a source and transferring it to a large isolated metal dome, on which a large charge accumulates…
