Continuous Dimming Electronic Ballast with Constant Lamp Power Control

Description:
A novel dimming electronic ballast which has continuos dimming capability from 20% to 100% and features good power factor, high efficiency, and low cost.  This ballast is expected to have economic application in lighting systems.
5,914,572 (96.093) and corresponding Japanese App. P10-115649
  
Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date
Discharge Lamp Driving Circuit Having Resonant Circuit Defining Two Resonance Modes US Utility *United States 08/878,821 5,914,572 6/19/1997 6/22/1999 6/19/2017
Category(s):
Electrical
For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
lchen@vtip.org
Inventors:
Fred Lee
Jinrong Qian
Keywords:
Energy/Power
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