Pulse controllers

Details Pulse controllers Pulse controllers

1976-12-22

1978-10-10

Schaffer, Robert K.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318331, 318345G, 318332, H02P 500

Patent

active

041198980

ABSTRACT:
A controller for a series electric motor is described of the type comprising means for applying D.C. pulses to the motor and means for controlling the mark/space ratio of the pulses applied to the motor. The current through the motor is sensed and the maximum mark/space ratio which may be applied to the motor is reduced when the motor current is below a predetermined limit to avoid overspeed in light load conditions.

REFERENCES:
patent: 3582745 (1971-06-01), Eguchi

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