Electric lighting and power controllers therefor

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

1989-12-12

1991-11-19

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315292, 315294, 315307, 315194, H05B 3908

Patent

active

050668960

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 analyzed 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: 4004214 (1977-06-01), Evans
patent: 4241295 (1980-12-01), Williams, Jr.
patent: 4359670 (1982-11-01), Hosaka et al.
patent: 4380730 (1983-04-01), Morton
patent: 4661765 (1987-04-01), Bando et al.
patent: 4689548 (1987-08-01), Mechlenburg
patent: 4804916 (1989-02-01), Frank
patent: 4839566 (1989-01-01), Herold et al.
New Approach to the Constant Current Control by A. Microprocessor--IECI '79 Proceedings, Mar. 19/21, 1979.

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