Direct current power source for an electric discharge lamp using

Details Direct current power source for an electric discharge lamp using Direct current power source for an electric discharge lamp using

1981-08-28

1983-10-11

Dixon, Harold A.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315311, 307570, G05F 100, H05B 3702

Patent

active

044095228

ABSTRACT:
A solid-state electronic ballast circuit for supplying direct-current power to an electric discharge vapor lamp is disclosed. The source-drain channel of a Vertical Metal Oxide Semiconductor (VMOS) Field Effect Transistor (FET) is connected in series with the lamp across a DC source. A resistance network controls the conductivity of a bipolar transistors, which in turn controls the conductivity of the VMOS channel, in response to variations in channel voltage, lamp voltage and lamp current.

REFERENCES:
patent: 3238415 (1966-03-01), Turner
patent: 4162429 (1979-07-01), Elms et al.
patent: 4289993 (1981-09-01), Harper et al.
patent: 4303841 (1981-12-01), Baker

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