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Induction cooking hob with induction heaters having power supplied by generators

  • US 6,528,770 B1
  • Filed: 04/07/2000
  • Issued: 03/04/2003
  • Est. Priority Date: 04/09/1999
  • Status: Expired due to Term
First Claim
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1. An induction cooking hob comprising:

  • a first induction heater having power supplied by a first generator;

    a second induction heater having power supplied by a second generator;

    wherein the first heater has at least two inductors and the second heater has at least one inductor, and the inductors of the first and second heaters are supplied at the same frequency or at multiples of one frequency;

    wherein the first heater is higher power than the second heater and said at least two inductors of said first heater have an input impedance substantially independent of a load put on the first heater; and

    wherein the generators comprise switches controlled by a single controller and the generators operate in resonant mode.

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