Apparatus for controlling the lighting of a discharge lamp by co

Details Apparatus for controlling the lighting of a discharge lamp by co Apparatus for controlling the lighting of a discharge lamp by co

1998-04-30

2000-10-03

Philogene, Haissa

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315291, 315362, 315128, 315 82, 315DIG7, G05F 100

Patent

active

061277894

ABSTRACT:
Provided is an apparatus for controlling the power supplied to a discharge lamp by detecting the voltage and current of the lamp's electric supply line. A microcomputer monitors power consumption of the discharge lamp by multiplying the voltage and current detected in the supple line to determine the input power and produces a representative control signal. The actual input power is compared with a preset input power, based upon the signal, and the power consumption of the discharge lamp is controlled in accordance with the results of the comparison.

REFERENCES:
patent: 5151631 (1992-09-01), Oda et al.
patent: 5572094 (1996-11-01), Yamashita et al.
patent: 5589742 (1996-12-01), Ueda
patent: 5880563 (1999-03-01), Toyama et al.

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