Control circuit for a refrigerator combined with a microwave ove

Details Control circuit for a refrigerator combined with a microwave ove Control circuit for a refrigerator combined with a microwave ove

1989-05-17

1990-09-18

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055R, 219486, 307 35, 307 39, 361 89, 221150HC, H05B 668

Patent

active

049580558

ABSTRACT:
A control circuit for a refrigerator combined with a microwave oven includes signal delay selecting and comparing circuitry start sensing circuitry timer circuitry and load driving circuitry in order to properly control operations of the refrigerator and the microwave oven. The control circuit eliminates unnecessary delay time of the operation of the microwave oven during operation of the refrigerator, and makes the refrigerator operate after start-up of the microwave oven is completed.

REFERENCES:
patent: 3066227 (1962-11-01), Rooney
patent: 4068781 (1978-01-01), Toth
patent: 4398651 (1983-08-01), Kumpfer
patent: 4399352 (1983-08-01), Ueda
patent: 4472640 (1984-09-01), Elmer
patent: 4847722 (1989-07-01), Bennett

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