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The induction coil provides very high voltages (several tens of thousands of volts) from a DC source. The principle is based on a step-up transformer comprised of a primary winding, a few tens of turns, and a secondary winding, hundreds of thousands of turns. To produce permanent sparks, it is necessary to cut the current flowing in the primary winding with a shaker (electromagnetic bell).
The induction coil stands 6" tall, 11.5" wide and 7" long. Each spark rod measures 5.25" long and 2.25" wide

Allturn Induction Heater 1200W Portable Induction Bolt Kit with 8 Coils & Case
$99.99
Induction Coil - 50mm Spark - 11.5" Long, 7" Wide, 6" tall - Eisco Labs
$191.99
Induction Coil all size for General Laboratory Work
$73.00
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