Control circuit for system for controlling the operation of elec

Details Control circuit for system for controlling the operation of elec Control circuit for system for controlling the operation of elec

1984-10-18

1988-03-29

Moore, David K.

Electric lamp and discharge devices: systems

Plural load device systems

Electric switch in the supply circuit

315 90, 315312, H05B 3700

Patent

active

047346256

ABSTRACT:
A preferred control circuit is adapted particularly for use in a system that controls the operation of at least a pair of light sources. The system permits switching, at a controller remote from the light head which contains the light sources, energizing power from an energized light source to a de-energized light source. The circuit monitors the integrity of the energized light source and switches energizing power from the energized light source to the de-energized light source when the energized light source fails. The circuit monitors the integrity of the de-energized light source and energizes a failed filament indicator when the de-energized light source fails.

REFERENCES:
patent: 3678286 (1972-07-01), Willis
patent: 3790846 (1974-02-01), Morris
patent: 3883777 (1975-05-01), Morita
patent: 4034259 (1977-07-01), Schoch
patent: 4068216 (1978-01-01), Brouwer et al.
patent: 4227119 (1980-10-01), Murata et al.
patent: 4250432 (1981-02-01), Kohler
patent: 4288844 (1981-09-01), Fisher et al.
patent: 4458179 (1984-07-01), Bainbridge et al.
patent: 4461974 (1984-07-01), Chiu
patent: 4550176 (1985-10-01), Callahan et al.

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