Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit
Patent
1988-10-07
1990-08-28
Pascal, Robert J.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Pulsating or a.c. supply to the cathode or heater circuit
315226, 315240, 315244, 315DIG7, H05B 3702
Patent
active
049528424
ABSTRACT:
A DC/AC converter for igniting and supplying a gas discharge lamp (1). The converter has two input terminals (C, D) intended to be connected to a DC voltage source, said input terminals (C, D) being connected together by means of a series arrangement including a load circuit comprising at least an induction coil (10) and a parallel arrangement of the lamp and a capacitor (12), as well as a first semiconductor switching element (13). The load circuit is shunted by a circuit comprising a second semiconductor switching element (14). The semiconductor switching elements (13, 14) are rendered alternately conductive and non-conductive by means of control circuits (13a, 14a). A second capacitor (11) is arranged in series with the induction coil (10) and the lamp. The second capacitor is shunted by a third switching element (15) which is non-conductive during the pre-heat period of the lamp electrodes (2, 3) and is conductive at least during ignition of the lamp.
REFERENCES:
patent: 4339690 (1982-07-01), Regan et al.
patent: 4532456 (1985-07-01), Knoll et al.
patent: 4559478 (1985-12-01), Fuller et al.
patent: 4588924 (1986-05-01), Luursema et al.
patent: 4642525 (1987-02-01), Widmayer
patent: 4647820 (1987-03-01), Chermin et al.
Bolhuis Pieter J.
De Bijl Adrianus M. J.
Van Meurs Johannes M.
Franzblau Bernard
Pascal Robert J.
U.S. Philips Corporation
LandOfFree
DC/AC converter for igniting and supplying a gas discharge lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DC/AC converter for igniting and supplying a gas discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC/AC converter for igniting and supplying a gas discharge lamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1591899