Thyristor power controller for an electrostatic precipitator

Details Thyristor power controller for an electrostatic precipitator Thyristor power controller for an electrostatic precipitator

1979-06-20

1981-12-29

Pellinen, A. D.

Electricity: power supply or regulation systems

Output level responsive

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

55105, 323244, 323902, 323903, B03C 368

Patent

active

043084940

ABSTRACT:
A thyristor power controller for rapidly varying the current delivered to a load and including: a clock circuit for developing a clock pulse for each zero crossing of an AC source, an analog phase circuit responsive to an adjustment current and operative to produce a firing signal for each clock pulse, a first thyristor acting on a positive half cycle of an AC source, a second thyristor acting on a negative half cycle of an AC source, a first thyristor control circuit enabling and disabling the first thyristor, a second thyristor control circuit enabling and disabling the second thyristor, and a thyristor selector operative to route the firing signal to the first or second control circuit.

REFERENCES:
patent: 3507096 (1970-04-01), Hall et al.
patent: 3532855 (1970-10-01), Cleave
patent: 3601674 (1971-08-01), Joslyn et al.
patent: 3696288 (1972-10-01), Carman
patent: 3746970 (1973-07-01), Cleave
patent: 3793557 (1974-02-01), Cramer
patent: 3873282 (1975-03-01), Finch
patent: 4041267 (1977-08-01), Wechsler
patent: 4238723 (1980-12-01), Jenks
Electronics, Mar. 4, 1976, pp. 112-114.

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