Control apparatus for electric motors

Details Control apparatus for electric motors Control apparatus for electric motors

1974-02-08

1976-10-12

Dobeck, B.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318313, 318318, H02P 516

Patent

active

039860892

ABSTRACT:
A control for an electric motor for driving the intermittent film drive mechanism in a flying-spot film scanner. The speed and phase of the motor output shaft is sensed and compared with the field-blanking pulses of a television system to bring the speed and phase into a desired relation with the field-blanking pulse rate and the field-blanking pulse time of occurrence. The rotation of the motor output shaft generates pulses at an adjustable rate and phase which can be compared in a comparator with the rate and phase of the field-blanking pulses.

REFERENCES:
patent: 3268788 (1966-08-01), Branco
patent: 3421065 (1969-01-01), Stabile
patent: 3510742 (1970-05-01), Pooley
patent: 3577056 (1971-05-01), Tsujikawa
patent: 3800196 (1974-03-01), Zimmermann
patent: 3821604 (1974-06-01), Walraven

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