High frequency heating apparatus using microcomputer controlled

Details High frequency heating apparatus using microcomputer controlled High frequency heating apparatus using microcomputer controlled

1989-03-21

1990-04-24

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1077, 363 98, 323283, H05B 668

Patent

active

049202464

ABSTRACT:
A high frequency heating source provides a predetermined high frequency heating output. An inverter receives an AC input and provides a high frequency output for driving the high frequency heating source. The inverter includes a rectifier for rectifying the AC input and a switching element for switching a DC output from the rectifier. The microprocessor outputs an ON/OFF signal having predetermined ON and OFF periods in accordance with a set output value associated with the high frequency heating output. A driver drives the switching element of the inverter in accordance with the ON/OFF signal output from the microprocessor.

REFERENCES:
patent: 4002875 (1977-01-01), Kiuchi et al.
patent: 4453068 (1984-06-01), Tucker et al.
patent: 4507531 (1985-03-01), Teich et al.
patent: 4686340 (1987-08-01), Fukasawa
patent: 4701588 (1987-10-01), Fukasawa
patent: 4724291 (1988-02-01), Inumada
patent: 4777575 (1988-10-01), Yamato et al.
patent: 4825028 (1989-04-01), Smith

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