Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1993-10-18
1995-11-07
Lee, Benny
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
315276, 315278, 315 39, 313493, H05B 4116
Patent
active
054650283
ABSTRACT:
An illumination unit of the invention comprises an electrodeless low-pressure discharge-lamp (10) and a high-frequency power supply (50). The lamp (10) is provided with a gastight closed discharge vessel (20) with an ionizable fill (21). The lamp (10) further is provided with a coil (30) with turns (31,32) of a primary and a secondary winding (33,34). The power supply unit 50 is provided with input terminals (51a,51b) and is further provided with a first output terminal (52a), electrically neutral with respect to mass, that is connected to a first end (36a) of the primary winding (33) and with a further output terminal (52b) that is connected to a second end (36b) of the primary winding (33). During nominal operation of the lamp (10) the primary winding (33) excites a high-frequency magnetic field that maintains an electrical discharge in the discharge vessel (20) and that induces in the secondary winding (34) a potential drop in the direction of a first, with respect to the mass electrically neutral end (37a), to a second free end (37b) that varies in an opposite sense to the potential drop from the first to second end (36a, 36b) in the first winding (33). In a first end portion (39a) of the coil (30) that comprises half of the turns of the coil (30), the relative amount of turns (31) of the primary winding (33) is at least 3/2 times as large as the relative amount of turns (32) of the secondary winding (34). The measure of the invention improves the ignition speed of the lamp.
REFERENCES:
patent: 3748510 (1973-07-01), McNeal
patent: 4562384 (1985-12-01), Owen
patent: 4710678 (1987-12-01), Houkes et al.
patent: 4727295 (1988-02-01), Postma et al.
patent: 5291091 (1994-03-01), Eggink et al.
Antonis Petrus H.
Konings Leonardus U. E.
Schlejen Jacob
Lee Benny
Philogene Haissa
U.S. Philips Corporation
Wieghaus Brian J.
LandOfFree
Illumination unit, and electrodeless low-pressure 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 Illumination unit, and electrodeless low-pressure discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Illumination unit, and electrodeless low-pressure discharge lamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-198869