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Hand held induction tool with energy delivery scheme

  • US 6,639,198 B2
  • Filed: 11/22/2002
  • Issued: 10/28/2003
  • Est. Priority Date: 11/03/1999
  • Status: Expired due to Term
First Claim
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1. A heating apparatus, comprising:

  • a work coil and an electronic circuit, said electronic circuit, upon a actuation of a cycle, being configured to determine both a current magnitude and a voltage magnitude input to a power converter stage over a plurality of sampled time intervals, then being configured to average said current and voltage magnitudes to calculate a power level being consumed by the power converter stage; and

    said electronic circuit being further configured to adjust said power level according to a predetermined energy delivery scheme until achieving a predetermined accumulated energy for said predetermined energy delivery scheme, and terminating said cycle.

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