Operating circuit for gaseous discharge and incandescent lamps

Details Operating circuit for gaseous discharge and incandescent lamps Operating circuit for gaseous discharge and incandescent lamps

1976-02-25

1978-07-04

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Automatic substitution of the load device or electrode

Diverse-type load device or electrode substituted

315 87, 315136, H05B 4146

Patent

active

040990958

ABSTRACT:
Gaseous discharge lamp is connected to a current sensing transformer which generates a signal when the lamp is on to turn on a triac operating a relay for turning off an auxiliary incandescent lamp which automatically operates when the gaseous discharge lamp is extinguished. A time delay circuit including a temperature-sensitive resistor is connected to the triac for keeping the auxiliary lamp in operation until the gaseous discharge lamp reaches a suitable light level.

REFERENCES:
patent: 3517254 (1970-06-01), McNamara, Jr.
patent: 3611432 (1971-10-01), Babcock et al.
patent: 3699382 (1972-10-01), Franke
patent: 3737719 (1973-06-01), Nodurft
patent: 3927348 (1975-12-01), Zawadzki

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