Dimming control techniques using self-excited gate circuits

There is described methods and techniques for providing dimming control of low-cost fluorescent lamps that are driven by self-excited gate circuits and which are nominally non-dimmable. A dimming function is achieved by providing a variable DC voltage input to the ballast. It is possible to retroact...

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Bibliographische Detailangaben
Hauptverfasser:	CHUNG SHU-HUNG H, HUI SHU-YUEN R
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	There is described methods and techniques for providing dimming control of low-cost fluorescent lamps that are driven by self-excited gate circuits and which are nominally non-dimmable. A dimming function is achieved by providing a variable DC voltage input to the ballast. It is possible to retroactively change existing non-dimmable lamps into dimmable lamps, or to form new low-cost dimmable fluorescent lamps.