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Starting your Car and basically Doing Anything: Nicholas Callan
The Induction Coil sounds like a buzzword piece of technology that might be thrown around as techno-garble on a classic episode of Star Trek. But actually, without it, your car would not start.
Induction coils are a type of discharge coil which are used to create high-voltage pulses from low-voltage direct (DC) current.
Invented in 1836 by Irish priest Nicholas Callan, it was an early type of transformer that led the way towards modern electrical transformer technology, which in turn enabled AC current to be transmitted and distributed over high-tension wires over long distances, thus enabling all modern forms of electrical consumption as well as electricity used in many types of consumer applications.
Without the transformer and the pioneering work of Nicholas Callan, there would have been no Edison, no Nikola Tesla, no Westinghouse.
Induction Coils were widely used in X-Ray machines, radio transmitters, and arc lighting from the 1880s to the 1920s. Today they are used almost exclusively in ignition systems for internal combustion engines.