Electric heating – Inductive heating – With power supply system
Patent
1990-08-28
1994-06-07
Leung, Philip H.
Electric heating
Inductive heating
With power supply system
219625, 363 97, H05B 612
Patent
active
053191749
ABSTRACT:
An induction heating cooker has a rectifier (13) for producing pulsating DC current, an inverter (14) which receives the pulsating current given from the rectifier (13) and produces a high frequency output current and a load circuit (15) including an output coil (21) and a resonance capacitor (22) connected in series to each other to receive high frequency output signal from the inverter, and the variation or adjustment of output electromagnetic power is made by changing duty ratio of the high frequency output current of the inverter by giving variable duty ratio setting signals to switching elements (Qa, Qb) in the inverter 14; the frequency of the high frequency output current of the inverter 14 is fixed, and therefore, unpleasant interference sound is not generated at parallel simultaneous operation.
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L. Hobson et al., "Dual-Element Induction Cooking Unit Using Power MOSFETs", International Journal of Electronics vol. 59, No. 6, Dec. 1985, pp. 748-757.
Asada Kazuhiko
Iwai Toshiaki
Kominami Hideyuki
Noma Hirofumi
Omori Hideki
Leung Philip H.
Matsushita Electric - Industrial Co., Ltd.
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