Ballast with zero voltage switching converter

A ballast ( 10 ) for powering at least one gas discharge lamp ( 20 ) comprises a switching converter ( 100 ) and an inverter ( 900 ). Switching converter ( 100 ) includes a transistor ( 130 ) and a control circuit ( 200 ) that provides substantially zero voltage switching of the transistor ( 130 ) a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CROSS JOHN, THIEL GERWIN, JOHNSEN ANDREW O, ERTL BERNHARD
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:	A ballast ( 10 ) for powering at least one gas discharge lamp ( 20 ) comprises a switching converter ( 100 ) and an inverter ( 900 ). Switching converter ( 100 ) includes a transistor ( 130 ) and a control circuit ( 200 ) that provides substantially zero voltage switching of the transistor ( 130 ) at a very high frequency. Preferably, control circuit ( 200 ) includes a drive circuit ( 300 ), a turn-on synchronization circuit ( 400 ), a current mirror circuit ( 500 ), a rail voltage regulator circuit (600), and a lamp current regulator circuit ( 700 ). Drive circuit ( 300 ) is preferably realized by a circuit arrangement that includes a standard pulse-width modulation integrated circuit ( 310 ).