发明授权
- 专利标题: Circuit for energizing cold-cathode fluorescent lamps
- 专利标题(中): 用于激励冷阴极荧光灯的电路
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申请号: US132390申请日: 1998-08-11
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公开(公告)号: US5892336A公开(公告)日: 1999-04-06
- 发明人: Yung Lin , Kwang H. Liu , John Chou
- 申请人: Yung Lin , Kwang H. Liu , John Chou
- 专利权人: O2Micro International Ltd
- 当前专利权人: O2Micro International Ltd
- 主分类号: G05F3/04
- IPC分类号: G05F3/04 ; H05B41/232 ; G05F1/00
摘要:
An electrical circuit for simultaneously energizing at least a pair of CCFLs that are connected in series. The circuit also includes a transformer having a primary winding adapted to receive an alternating current. A secondary winding is coupled in series with the CCFLs to energize their operation. A shunt capacitor, connected in parallel across one CCFL, significantly reduces the peak voltage that must be applied across the CCFLs. Usually, the circuit also includes an isolation capacitor connected in series between the CCFLs and the secondary winding of the transformer. The isolation capacitor provides both DC blocking and electrical isolation between the secondary winding and the CCFLs.
公开/授权文献
- US4797120A Coaxial connector having filtered ground isolation means 公开/授权日:1989-01-10
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