Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1976-07-14
1977-08-09
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
250372, 250504, 315 39, 315149, 315158, 315159, 315267, 315344, H05B 4116, H05B 4124
Patent
active
040413527
ABSTRACT:
A starting assist control circuit for an electrodeless light source in which a UV source for assisting in starting an electrodeless lamp is coupled in series with the dc supply for a microwave power source for the lamp so that a reduced dc voltage is supplied to the microwave power source at lamp starting. At staring, a capacitive impedance element is coupled across the inner and outer conductors of the fixture to provide an additional starting assist by creating a condition of resonance in the fixture. A heat responsive bimetallic switch element associated with both the capacitor and the UV source automatically shorts out the UV source and decouples the capacitor after the lamp has started thereby permitting full dc power to the microwave power source during the operating condition of the lamp.
REFERENCES:
patent: 3142758 (1964-07-01), Dietz
patent: 3196312 (1965-07-01), Marrison
patent: 3227923 (1966-01-01), Marrison
patent: 3258758 (1966-06-01), Byrd
patent: 3786308 (1974-01-01), Browner et al.
patent: 3873884 (1975-03-01), Gabriel
patent: 3989983 (1976-11-01), Uchino et al.
patent: 4010400 (1977-03-01), Hollister
Haugsjaa Paul O.
Lech Joseph
McNeill William H.
Regan Robert J.
Chatmon, Jr. Saxfield
GTE Laboratories Incorporated
Hart Leslie J.
Kriegsman Irving M.
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