Circuit for controlling the speed of a motor

Details Circuit for controlling the speed of a motor Circuit for controlling the speed of a motor

1981-11-23

1983-11-22

Truhe, J. V.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

H02P 512

Patent

active

044171870

ABSTRACT:
A circuit is disclosed for controlling the speed of a motor having a constant magnetic field and supplied from an alternating current line source through a controllable semiconductor rectifier which utilizes a pair of series connected electronic switches each followed by storage capacitors. The switches are operated in phase opposition by the line frequency and followed by the input of a controller whose output is connected to a firing stage for firing the semiconductor rectifier.

REFERENCES:
patent: 3191112 (1965-06-01), Cain
patent: 3470439 (1969-09-01), Brown
patent: 3621295 (1971-11-01), Callan
patent: 4274037 (1981-06-01), Soeda
patent: 4334177 (1982-06-01), Lund

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