Electric lamp and discharge devices: systems – Time-controlled
Patent
1997-07-31
2000-10-24
Wong, Don
Electric lamp and discharge devices: systems
Time-controlled
315247, 315219, 315209R, H02M 112
Patent
active
061372412
ABSTRACT:
The present invention provides for a starting switch circuit which is generally applicable to ballasts and fluorescent lamps having different normal rated power from each other. A starting switch circuit includes a serially-connected circuit having a first rectifier circuit, a semiconductor switching element including a control terminal, and a first resistor circuit for detecting a current flowing to the semiconductor switching element, all connected in series; a first timer circuit, connected in parallel to a series circuit of the semiconductor switching element and the first resistor circuit, for switching the semiconductor switching element to OFF state after the semiconductor switching element is in ON state for a predetermined period of time; and a control circuit for controlling the semiconductor switching element.
REFERENCES:
patent: 3253186 (1966-05-01), Rogers et al.
patent: 3663860 (1972-05-01), Phillips
patent: 3676734 (1972-07-01), Shimizu et al.
patent: 3753040 (1973-08-01), Quenelle
patent: 3889153 (1975-06-01), Pierce
patent: 4005335 (1977-01-01), Perper
patent: 4812736 (1989-03-01), Albach et al.
patent: 5461286 (1995-10-01), Hirschmann
patent: 5528484 (1996-06-01), Hayashi
Encyclopedia of Electronics, Stan Gibilisco, TAB Professional and Reference Books, p. 731, 1985.
Lee Wilson
Matsushita Electric - Industrial Co., Ltd.
Wong Don
LandOfFree
Starting switch circuit for a fluorescent 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 Starting switch circuit for a fluorescent lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Starting switch circuit for a fluorescent lamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1967318