Invention Grant
- Patent Title: Ballast circuit for reducing lamp striations
- Patent Title (中): 用于减少灯条的镇流器电路
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Application No.: US12494177Application Date: 2009-06-29
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Publication No.: US08258712B1Publication Date: 2012-09-04
- Inventor: Wei Xiong , Christopher Radzinski
- Applicant: Wei Xiong , Christopher Radzinski
- Applicant Address: US AL Madison
- Assignee: Universal Lighting Technologies, Inc.
- Current Assignee: Universal Lighting Technologies, Inc.
- Current Assignee Address: US AL Madison
- Agency: Waddey & Patterson, P.C.
- Agent Mark J. Patterson
- Main IPC: H05B37/02
- IPC: H05B37/02

Abstract:
An electronic ballast circuit includes a striation reduction circuit that can create an asymmetry in a lamp power signal that powers a gas-discharge lamp. The striation reduction circuit may have first and second circuit paths to cause the asymmetry in the lamp power signal. The first circuit path transmits the AC component signal of an input signal associated with an AC voltage while the second circuit path transmits a DC component signal. A non-linear component in the second circuit path is utilized to generate a harmonic component signal. AC component signal, DC component signal, and harmonic component signal are superimposed onto one another to cause an asymmetry in the lamp power signal that powers the gas discharge lamp.
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