Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers
Patent
1988-01-04
1989-09-19
Yusko, Donald J.
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Flashers
315199, 315206, 315247, H05B 3700
Patent
active
048684600
ABSTRACT:
This invention is a circuit for controlling the power received by a load. The operation of this circuit is based on variations of voltage amplitude rather than phase as is the case with other circuits utilizing the phase control principle. A pair of terminals couple an AC service voltage source to a load and to a distributor switch by which an operator can arrange for the load to receive power directly from the AC service voltage source, or through a transformer and a gated switch, or through a diode. The operation, by way of the transformer and the gated switch or by way of the diode, provides not only "soft-start" and protection from power line transients (voltage spikes) to the load but also prevents it from emitting acoustical noise.
REFERENCES:
patent: 3028525 (1962-03-01), Morton
patent: 3215891 (1965-10-01), Fritz
patent: 3715623 (1973-02-01), Szabo
patent: 3836814 (1974-09-01), Rodriquez
patent: 4334171 (1982-06-01), Parman et al.
patent: 4348612 (1982-09-01), Morton
patent: 4540917 (1985-09-01), Luchaco et al.
patent: 4570107 (1986-02-01), Lee
Problems Encountered in Applying the Silicon-Controlled Rectifier to Control Tungsten Lamp Loads, C. S. Daugherty, IEEE (IRE) Transactions "Communication & Electronics", Sep. 1961, vol. 80, pp. 400-402.
"The Silicon Controlled Rectifier in Lamp Dimming & Heating Control Service", E. E. von Zastrow, Appl. Note 200.14 by General Electric. 6/65.
Palladino Brian
Yusko Donald J.
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