Ballast circuit having voltage clamping circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Mar 14, 2002
app pub date -
Feb 21, 2001
filing date -
Feb 25, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention provides a ballast circuit for energizing a load, such as a fluorescent lamp. The ballast circuit can include an inverter circuit that receives a DC voltage across a positive voltage rail and a negative voltage rail, and produces an AC voltage for driving the load. The ballast circuit can further include two inductors coupled in series to one another, and coupled between the inverter and the load to provide a current path between the inverter and the load. A voltage clamping circuit clamps the voltage at the coupling junction between the two inductive elements to a pre-determined positive value during one half cycle of the inverter AC voltage, and to a pre-determined negative value during the other half cycle of the inverter AC voltage.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully