System for providing a firing signal to an electrical power swit

Details System for providing a firing signal to an electrical power swit System for providing a firing signal to an electrical power swit

1981-10-27

1984-06-05

Beha, Jr., William H.

Electricity: power supply or regulation systems

External or operator controlled

Phase controlled switching using electronic tube or a three...

307252B, 315291, G05F 500

Patent

active

044531230

ABSTRACT:
A system for providing a firing signal to an electrical power switch at a selectable instant during each cycle of a periodic waveform electric power source. A comparator receives a signal varying monotonically with time and a control voltage as inputs, and produces the firing signal at such time that one of these inputs first exceeds the other. The control voltage is clamped to a predetermined value to provide a minimum power output from the electrical power switch.

REFERENCES:
patent: 3684919 (1972-08-01), Cramer
patent: 3793557 (1974-02-01), Cramer
patent: 3816797 (1974-06-01), Skirpan
patent: 4004214 (1977-01-01), Evans
patent: 4168476 (1979-09-01), Petrizio
patent: 4238723 (1980-12-01), Jenks
patent: 4311956 (1982-01-01), Tolmie

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