Electricity: motive power systems – Motor-reversing – Armature or primary circuit control
Patent
1977-05-18
1978-08-29
Rubinson, Gene Z.
Electricity: motive power systems
Motor-reversing
Armature or primary circuit control
318230, 318245, H02P 540
Patent
active
041106717
ABSTRACT:
The variator comprises a triggerable silicon-controlled rectifier component for connection in series with the a.c. motor to the a.c. source, and a phase-shifting circuit connected to the terminals of the rectifier component and comprising a capacitive branch and a resistive branch which has a regulating potentiometer. The junction between these two branches is connected to the control electrode of the rectifier component. A unidirectional semiconductor component responsive to voltage is connected in parallel with the capacitive branch and a part of the resistive branch in which the potentiometer is inserted. The resistive branch comprises connected in parallel a first branch comprising a first resistor and the potentiometer and a second branch comprising a second resistor and a third resistor. The junction between the second and third resistors is connected to the slide of the potentiometer and the unidirectional component is connected to the junction between the potentiometer and the first resistor.
REFERENCES:
patent: 3271648 (1966-09-01), Weed
patent: 3366861 (1968-01-01), Dudler
patent: 3443188 (1969-05-01), Mortimer
patent: 3447057 (1969-05-01), Brown et al.
patent: 3470436 (1969-09-01), Steele
patent: 3596158 (1971-07-01), Watrous
patent: 3875485 (1975-04-01), Hornung
Aciers et Outillage Peugeot
Rubinson Gene Z.
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