Phase control of power to a load using a single capacitor

Details Phase control of power to a load using a single capacitor Phase control of power to a load using a single capacitor

1977-06-21

1979-06-12

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

307252B, 307262, 323 35, 323 39, G05F 144, H03K 408

Patent

active

041581644

ABSTRACT:
In the control of power supplied to a load from an a.c. power source by varying the phase angle of the a.c. power alternation at which conduction is initiated, conduction triggering pulses are generated by the use of a single capacitor which is first charged at a selected rate starting from a time corresponding to a predetermined phase angle of the a.c. power alternation, until the voltage thereacross reaches a first value, whereupon a triggering pulse is initiated, and the capacitor is then charged at a selected rate until the voltage thereacross reaches a second value, whereupon the triggering pulse is terminated.

REFERENCES:
patent: 3243689 (1966-03-01), Perrins
patent: 3932771 (1976-01-01), Bucek et al.
patent: 3986047 (1976-10-01), Griess

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