School Lab Electronic Induction Coil

School Lab Electronic Induction Coil

An induction coil or “spark coil” (archaically known as an inductorium or Ruhmkorff coil after Heinrich Ruhmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply. To create the flux changes necessary to induce voltage in the secondary, the direct current in the primary is repeatedly interrupted by a vibrating mechanical contact called an interrupter. Developed beginning in 1836 by Nicholas Callan and others, the induction coil was the first type of transformer. Electronic Induction Coils were widely used in x-ray machines, spark-gap radio transmitters, arc lighting and quack medical electrotherapy devices in early 20th century