Fan motor controller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 24, 2009
Grant Date -
Aug 21, 2008
app pub date -
Feb 21, 2007
filing date -
Feb 21, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fan motor controller comprised of a power supply unit, three driving circuits, three power output circuits, a microprocessor, a voltage raising and compensation circuit, a Back-EMF sensing circuit, a current-limit protection circuit, and a speed control circuit. The fan motor controller eliminates the use of a Hall sensor, enables the field effect power transistor of the works in full conduction of each power output circuit to work in full conduction so as to lower the temperature.
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