发明申请
- 专利标题: Method and system for driving a capacitively coupled fluorescent lamp
- 专利标题(中): 用于驱动电容耦合荧光灯的方法和系统
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申请号: US09815089申请日: 2001-03-22
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公开(公告)号: US20020135319A1公开(公告)日: 2002-09-26
- 发明人: Gert Bruning , Chin Chang
- 申请人: Philips Electronics North America Corp.
- 申请人地址: null
- 专利权人: Philips Electronics North America Corp.
- 当前专利权人: Philips Electronics North America Corp.
- 当前专利权人地址: null
- 主分类号: H05B037/02
- IPC分类号: H05B037/02
摘要:
A capacitively coupled fluorescent lamp package having a capacitively coupled fluorescent lamp; an inverter circuit for driving the lamp; and supply nodes for receiving a supply voltage is disclosed. The capacitively coupled fluorescent lamp package includes a resonant circuit lamp driving scheme for driving the capacitively coupled fluorescent lamp. The driving scheme reduces parasitic capacitance leakage current; compensates the reactive power using the secondary side leakage inductance in order to have the resonant frequency approximately equal the inverter circuit operating frequency for current source-type driven circuits; and forms a series resonant sub-circuit with the embedded ballasting capacitor and the secondary side leakage inductance for voltage source-type driven circuits, such that the resonant frequency is substantially less than the inverter circuit operating frequency and that the lamp current is properly shaped along with current ballasting.
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