Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Discharge device and/or rectifier in the cathode or heater...
Patent
1989-02-07
1991-01-29
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Discharge device and/or rectifier in the cathode or heater...
315DIG5, 315DIG7, H05B 4124
Patent
active
049889206
ABSTRACT:
A high frequency power circuit for energizing at least one gas discharge lamp with two filaments. The circuit is adapted to be supplied with power from a DC voltage source, and comprises semiconductor switching elements and control means for the semiconductor switching elements. The circuit also comprises a high frequency transformer having at least one primary winding which, in operation, is supplied with an AC voltage signal by the semiconductor switching elements. The transformer has at least one secondary main winding and secondary auxiliary windings. The secondary auxiliary windings, in operation, energize the filaments of the at least one gas discharge lamp. The control means are adapted to disconnect, in a stand-by mode, by at least one controllable switching means. The connection between the at least one secondary main winding and the at least one gas discharge lamp. The control means are also adapted to supply, in the stand-by mode, such an AC voltage signal to the at least one primary winding that the filaments of the gas discharge lamp(s) are preheated through the secondary auxiliary windings.
REFERENCES:
patent: 3619713 (1971-11-01), Biega
patent: 3657598 (1972-04-01), Nomura et al.
patent: 4087722 (1977-05-01), Hancock
patent: 4286195 (1981-08-01), Swinea, Jr.
patent: 4392087 (1983-07-01), Zansky
patent: 4464606 (1984-08-01), Kane
LaRoche Eugene R.
N.V. Nederlandsche Apparatenfabriek Nedap
Neyzari Ali
LandOfFree
High-frequency power circuit for gas discharge lamps does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-frequency power circuit for gas discharge lamps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-frequency power circuit for gas discharge lamps will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-816117