Controller for lamp having more than one light source

Details Controller for lamp having more than one light source Controller for lamp having more than one light source

1982-03-26

1984-07-03

Dixon, Harold

Electric lamp and discharge devices: systems

Automatic substitution of the load device or electrode

315 65, 315291, 315313, 362804, H05B 3910

Patent

active

044581793

ABSTRACT:
A controller for controlling operation of a multi-filament lamp is provided that permits selection of the filament to be energized from a control box placed at a remote location from the lamp. Only two leads are required to electrically connect the control box to the lamp. The controller automatically switches energizing power from a burned out filament to an alternate filament. The controller can also include a source of alternate power for the controller in the event that primary power is lost. The controller can also include a lock out feature which prevents switching energizing power at the control box from an energized filament to a failed filament.

REFERENCES:
patent: 1459283 (1923-06-01), Das
patent: 3697802 (1972-10-01), Demas
patent: 3814947 (1974-06-01), Friedman
patent: 4034259 (1977-07-01), Schoch
patent: 4349863 (1982-09-01), Peterson

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