a device that produces or is powered by electricity

a coil for producing a high voltage from a low-voltage source

coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit

coil such that current is induced in it by passing a current through the primary coil

increase or decrease (an alternating current or voltage)

a transformer that supplies high voltage to spark plugs in a gasoline engine

a transformer that reduces voltage

a transformer that increases voltage

a step-up transformer with an air core; used to produce high voltages at high frequencies

a transformer whose voltage ratio of transformation can be adjusted

a coil for producing a high voltage from a low-voltage source

coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit

coil such that current is induced in it by passing a current through the primary coil