Starlac Industries offers Rukmkorff Induction Coil, EE - 578. Starlac Industries is an ISO 9001: 2000 certified manufacturer and exporter of scientific instruments. The Rukmkorff Induction Coil features spark length of approx 30mm. It can be operated on 6 to 8 V D.C. It incorporates a fully adjustable trembler system. This Rukmkorff Induction Coil has spark suppression capacitors in the base and can be operated on 220V AC.