Constant speed regulator for DC motors

Details Constant speed regulator for DC motors Constant speed regulator for DC motors

1980-05-15

1983-06-14

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318345B, H02P 516

Patent

active

043885721

ABSTRACT:
An electric motor is supplied a voltage from a control circuit. The control circuit is powered by an AC to DC rectifier having a shunt capacity. An increase in motor load will result in lower speed and an increase in current. This causes an increase in AC ripple across the shunt capacitor. The control circuit is responsive to the AC ripple and increases voltage to the motor so that the speed set before the application of load is again attained.

REFERENCES:
patent: 2977523 (1961-03-01), Cockrell
patent: 3486104 (1969-12-01), Epstein
patent: 3600663 (1971-08-01), Wagner
patent: 3947752 (1976-03-01), Morgan

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