Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1992-10-20
1994-11-29
Mullins, James B.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315207, 315224, 315226, 315DIG7, H05B 3702
Patent
active
053693396
ABSTRACT:
A circuit arrangement for operating a low-pressure mercury discharge lamp by a high-frequency current which includes a DC component and a high-frequency AC component. The circuit arrangement has a switching device for generating the high-frequency AC component from a supply voltage, an asymmetry device for rendering a first amplitude of the high-frequency AC component in a first polarization direction and a second amplitude of the high-frequency AC component in a second polarization direction unequal to one another, and a DC device for generating the DC component. The polarity of the DC component coincides with the polarization direction of the greater of the two amplitudes. Thus, striations in a low-pressure mercury discharge lamp operated on the circuit arrangement can be rendered invisible over a wide range of powers consumed by the lamp.
REFERENCES:
patent: 5001386 (1991-03-01), Sullivan et al.
patent: 5041763 (1991-08-01), Sullivan et al.
patent: 5066894 (1991-11-01), Klier
patent: 5103138 (1992-04-01), Orenstein et al.
patent: 5189343 (1993-02-01), Pacholok
Dudek Jim
Gathman Laurie E.
Mullins James B.
U.S. Philips Corporation
LandOfFree
Circuit arrangement for reducing striations in a low-pressure me does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit arrangement for reducing striations in a low-pressure me, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for reducing striations in a low-pressure me will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-75894