An apparatus for producing electric currents by induction; a passive electrical device used to produce high- volt age pulses from a low- volt age D.C. supply, essentially a transformer. Also referred to as a spark coil.
A high-voltage-output transformer utilizing a spark-contact interrupter in its primary winding to produce pulsating current from a battery. The heart of the Faradic battery. CATALOGING AND VALUATION As with other antiques, value is what the traffic will bear, and market prices vary enormously with condition, rarity, demand, and the seller's knowledge (The flea market axiom: If you don't know what it is, but it's small, it's $25; and if it's big, it's $100!). Click on the above link for measurements listed with width, height, and depth, in inches. Years of manufacture are approximate. Listings may be by description or manufacturer's name. Additions and corrections from readers are appreciated.
An electrical device that receives low battery voltage in its primary winding and delivers pulsating high voltage in its secondary winding as the primary field is energized and collapsed by use of a set of points.
An apparatus for obtaining intermittent high voltage consisting of a primary coil through which the direct current flows, an interrupter, and a secondary coil of a larger number of turns in which the high voltage is induced.
An induction coil or "spark coil" (archaically known as a Ruhmkorff coil) is a type of disruptive discharge coil. It is a passive electrical device used to produce high-voltage pulses from a low-voltage DC supply.