Invention Grant
US08816609B2 Method and circuit for improving crest factor of gas discharge lamp
有权
提高气体放电灯的波峰因数的方法和电路
- Patent Title: Method and circuit for improving crest factor of gas discharge lamp
- Patent Title (中): 提高气体放电灯的波峰因数的方法和电路
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Application No.: US13533671Application Date: 2012-06-26
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Publication No.: US08816609B2Publication Date: 2014-08-26
- Inventor: Qi Zhang , Weiqiang Zhang , Jianping Ying
- Applicant: Qi Zhang , Weiqiang Zhang , Jianping Ying
- Applicant Address: CN Shanghai
- Assignee: Delta Electronics (Shanghai) Co., Ltd.
- Current Assignee: Delta Electronics (Shanghai) Co., Ltd.
- Current Assignee Address: CN Shanghai
- Agency: Morris Manning & Martin LLP
- Agent Tim Tingkang Xia, Esq.
- Priority: CN201110201429 20110719
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H05B37/02 ; H05B39/04 ; H05B41/36 ; H05B41/285 ; H05B39/02 ; H05B41/16 ; H05B41/24 ; H01J13/48 ; H01J15/04 ; H01J17/36 ; H05B37/00 ; H05B39/00 ; H05B41/00 ; H05B41/282
Abstract:
A method and circuit for improving the crest factor of the gas discharge lamp. The method includes: the signal of the gas discharge lamp can be sampled to get a status signal; whether the present stage of the gas discharge lamp is at warm up stage or constant power stage can be judged based on the result of comparison between the status signal and a preset value; preset parameters can be selected based on the stage of the gas discharge lamp, the first parameter can be selected when the gas discharge lamp is at a warm up stage, and the second parameter can be selected when the gas discharge lamp is at a constant power stage; a control signal can be outputted during the lamp current commutation based on the selected first or second parameter to improve the crest factor of the gas discharge lamp.
Public/Granted literature
- US20130020966A1 METHOD AND CIRCUIT FOR IMPROVING CREST FACTOR OF GAS DISCHARGE LAMP Public/Granted day:2013-01-24
Information query
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