Method of and device for controlling a d.c. washing machine moto

Details Method of and device for controlling a d.c. washing machine moto Method of and device for controlling a d.c. washing machine moto

1974-12-06

1977-02-08

Schaffer, Robert K.

Electricity: motive power systems

Automatic and/or with time-delay means

Terminal voltage or counter-electromotive force of...

318461, 317 22, G05B 100

Patent

active

040074099

ABSTRACT:
A method of controlling the operation of a d.c. motor of a washing machine by energizing or de-energizing a reference voltage generator. The back-e.m.f. of the motor is compared with the reference voltage. The a.c. supply of the generator is controlled by contacts of detectors for the operating conditions of the machine, such as temperature of the suds or of electronic components, unbalance, opening of the door etc.

REFERENCES:
patent: 3633073 (1972-01-01), Day et al.
patent: 3742302 (1973-06-01), Neill
patent: 3742303 (1973-06-01), Dageford

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