Inverter device for induction heating

Details Inverter device for induction heating Inverter device for induction heating

H - Electricity

05

B

321/23, 327/26

H05B 6/04 (2006.01) H05B 6/06 (2006.01) H05B 6/12 (2006.01)

Patent

CA 1205869

ABSTRACT This invention relates to an induction heating device making use of a bridge inverter and comprising a DC power source, a plurality of switching elements (6) and (7) forming a bridge inverter, and a circuit for detecting the turn-off of the switching elements (6) and (7). Generally, in the bridge inverter, because of the turn-off time of the switching elements (6) and (7), there is always the danger of the elements being simultaneously rendered conductive and thereby damaged. This invention eliminates this danger and greatly improves the reliabil- ity of the device. In the concrete, in order to detect the turn-off of the switching elements (6) and (7), an improved turn-off detection circuit is employed and an improved control circuit is installed to prevent the circuit from malfunctioning owing to external noise.

418502

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