Output control apparatus for a microwave oven

Details Output control apparatus for a microwave oven Output control apparatus for a microwave oven

1980-07-21

1981-11-10

Shaw, C. C.

Electric heating

Metal heating

Of cylinders

361 6, H05B 666

Patent

active

043000320

ABSTRACT:
In an output control apparatus for a microwave oven, it is known to insert a control switch in the primary side of a power transformer of a magnetron. In this invention, the control switch is provided in the secondary side of the power transformer either in a magnetron circuit or in a rectifier circuit. The actuation of the control switch is controlled by an on-off control signal such that the control switch is opened and closed respectively within zero-current time periods, of a half-wave current which flows through the rectifier or the magnetron. A transient rush current to the transformer is reduced and reliable intermittent operation of the magnetron is assured.

REFERENCES:
patent: 3560796 (1971-02-01), Landis
patent: 3939319 (1976-02-01), Tamano et al.
patent: 4017702 (1977-04-01), Harmon et al.

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