Ballast method and apparatus and coupling therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 29, 2000
Grant Date -
N/A
app pub date -
Mar 17, 1997
filing date -
Mar 17, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ballast is disclosed which can operate at an effective level of output with a number of different input voltage levels. A ballast is also disclosed that uses a ceramic as a heat sink for switching transistors. A ballast is further disclosed which uses a start signal for a power factor circuit to boost voltage after the load for the ballast has already had a current applied to it. Furthermore, a ballast is disclosed which has a transformer having a permeability which varies somewhat inversely with temperature over a given temperature range.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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