Invention Grant
- Patent Title: Fluorescent dimming ballast
- Patent Title (中): 荧光灯调光镇流器
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Application No.: US12486086Application Date: 2009-06-17
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Publication No.: US08212498B2Publication Date: 2012-07-03
- Inventor: Louis R. Nerone
- Applicant: Louis R. Nerone
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Fay Sharpe LLP
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H05B37/02 ; H05B39/04 ; H05B41/36
Abstract:
A dimmable ballast and methods are presented in which the operating frequency of a self-oscillating inverter is controlled according to a sensed lamp current for dimming control or cathode heating, and an AC bus voltage of the inverter is controlled to be at or below a voltage threshold value to prevent over driving operating lamps when one or more lamps are being replaced.
Public/Granted literature
- US20100213850A1 FLUORESCENT DIMMING BALLAST Public/Granted day:2010-08-26
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