Apparatus for controlling the power to a discharge-lamp

Details Apparatus for controlling the power to a discharge-lamp Apparatus for controlling the power to a discharge-lamp

1992-08-18

1994-11-15

Lee, Benny

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315307, 315308, 315224, 315127, G05F 100

Patent

active

053651529

ABSTRACT:
In a discharge-lamp lighting apparatus for lighting a discharge lamp such as a metal halide lamp, there is provided a lighting control circuit which controls its output in a starting time of the discharge lamp in response to at least a length of the last off-time and an on-time after the start of discharging; and a power supplied to the discharge lamp is controlled in accordance with this output of the lighting control circuit.

REFERENCES:
patent: 4904907 (1990-02-01), Allison et al.
patent: 4906901 (1990-03-01), Carroll
patent: 5142203 (1992-08-01), Oda et al.
patent: 5204587 (1993-04-01), Mortimer et al.

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