Electric lighting and power controllers therefor

Details Electric lighting and power controllers therefor Electric lighting and power controllers therefor

1991-07-15

1993-08-17

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315224, 315301, H05B 3702, H05B 4136

Patent

active

052372448

ABSTRACT:
In a lighting power controller having a controllable switch (such as a thyristor), in order to compensate for perturbations in the mains supply waveform, the waveform is analysed and a table is set up of thyristor firing angle against output RMS voltage. To obtain a desired output RMS voltage, the thyristor is fired at the angle indicated by the table.

REFERENCES:
patent: 3644785 (1972-02-01), Jarmer
patent: 3875460 (1975-04-01), Kappenhagen
patent: 4004214 (1977-01-01), Evans
patent: 4379254 (1983-04-01), Hurban
patent: 4380730 (1983-04-01), Morton
patent: 4716343 (1987-12-01), Lindquist
patent: 4728865 (1988-03-01), Daniels
patent: 4839556 (1989-06-01), Herold et al.
patent: 4888524 (1989-12-01), Ganser et al.
patent: 4914356 (1990-04-01), Cockram
patent: 5039921 (1991-08-01), Kakitani

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