D.C. chopper control device for electric motors

Details D.C. chopper control device for electric motors D.C. chopper control device for electric motors

1976-01-19

1979-02-13

Schaefer, Robert K.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318318, 318599, 318139, 318332, H02P 506, H02P 534, H02P 706

Patent

active

041398092

ABSTRACT:
The invention relates to a control device for D.C. motors operating by chopping the supply current. Said device comprises a voltage-frequency converter, a frequency divider, a monostable multivibrator, an analog-digital converter, a pulse down-counter and a bistable flip-flop, arranged to chop the direct current supply by means of a hit or miss control signal of which the cyclic ratio is a linear function of a control voltage U.

REFERENCES:
patent: 3096483 (1963-07-01), Ransom
patent: 3243681 (1966-03-01), Dannetell
patent: 3378746 (1968-04-01), Weiser
patent: 3393366 (1968-07-01), Shoop
patent: 3609488 (1971-09-01), Sampson et al.
patent: 3843914 (1974-10-01), Carlson et al.
patent: 3958182 (1976-05-01), Sauthier

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