Metal base cookware induction heating apparatus having improved

Details Metal base cookware induction heating apparatus having improved Metal base cookware induction heating apparatus having improved

1974-11-01

1979-04-24

Reynolds, Bruce A.

Electric heating

Metal heating

Of cylinders

219 1077, 363 96, H05B 504

Patent

active

041513878

ABSTRACT:
A metal based cookware induction heating apparatus having an improved power supply and control circuit comprised of a chopper inverter including a gate controlled power thyristor coupled to and supplying an induction heating coil with periodic energization currents. A full wave rectifier supplies rectified, unfiltered, unidirectional high voltage excitation potential to the chopper inverter which converts the excitation potential to a comparatively high frequency of the order of 20 kilohertz for supply to the induction heating coil. A gating circuit is provided for driving the chopper inverter directly from the rectified high voltage excitation potential supplied by the rectifier.

REFERENCES:
patent: 3355654 (1967-11-01), Risberg
patent: 3566243 (1971-02-01), Landis

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