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Inverter device for induction heating

  • US 4,555,608 A
  • Filed: 07/05/1983
  • Issued: 11/26/1985
  • Est. Priority Date: 11/04/1981
  • Status: Expired due to Term
First Claim
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1. An inverter device for induction heating, comprising a bridge inverter having a pair of series-connected switching elements connected to a DC power source and having an output obtained from a junction between said switching elements, a circuit for detecting the turn-off of said switching elements comprising a voltage comparator having one input terminal connected to said junction and another input terminal connected to said DC power source wherein said turn-off is detected when the voltages at said one and another input terminals become equal, and a timing circuit and a flip-flop circuit which are connected to an output of said turn-off detection circuit, the arrangement being such that after the turn-off of one of said switching elements has been detected, the other switching element is driven.

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