Photo-feedback drive system

Details Photo-feedback drive system Photo-feedback drive system

1990-06-13

1992-02-18

Laroche, Eugene R.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

315158, 315156, 250205, H05B 3702

Patent

active

050897489

ABSTRACT:
A driver circuit for an electroluminescent lamp has a photo-diode for detecting the light intensity of the electroluminescent lamp and providing an output signal responsive to the intensity of the lamp and a circuit responsive to the output signal for driving the electroluminescent lamp at a set intensity.

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patent: 4595861 (1986-06-01), Simopoulos et al.
patent: 4611150 (1986-09-01), Ball et al.
patent: 4633141 (1986-12-01), Weber
patent: 4684822 (1987-08-01), Angott
patent: 4717863 (1988-01-01), Zeiler
patent: 4845489 (1989-07-01), Hormel

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