发明授权
- 专利标题: Starting circuit for electric discharge lamp
- 专利标题(中): 放电灯起动电路
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申请号: US11861895申请日: 2007-09-26
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公开(公告)号: US07397204B2公开(公告)日: 2008-07-08
- 发明人: Patrick McElroy
- 申请人: Patrick McElroy
- 申请人地址: US CA Tustin
- 专利权人: Balboa Instruments, Inc.
- 当前专利权人: Balboa Instruments, Inc.
- 当前专利权人地址: US CA Tustin
- 主分类号: H05B37/02
- IPC分类号: H05B37/02
摘要:
A starting circuit for an electric discharge lamp providing an electric current to a lamp having a first and a second filament. The circuit measures a lamp current and a filament temperature and then compares these against a reference voltage. When the lamp current is below a set threshold value, a relay contact disposed between the first and second filament is closed to direct the electric current through the first and second filaments to initiate pre-heating of the lamp. Once the filament temperature exceeds a set threshold, the relay contact is opened and the electric current passes through heated gas inside the lamp.
公开/授权文献
- US20080007188A1 STARTING CIRCUIT FOR ELECTRIC DISCHARGE LAMP 公开/授权日:2008-01-10