发明名称 |
Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship |
摘要 |
A method of driving a lamp that uses a DC to AC inverter that is connected to a primary winding of a transformer is disclosed. The inverter frequency is variable, and in one embodiment, may be controlled by a voltage controlled oscillator. Circuitry is included that monitors the phase relationship between a voltage across a secondary of the transformer and a current through the primary of the transformer. The circuitry monitors the phase relationship and adjusts the inverter frequency, such as by adjusting voltage controlled oscillator, so that the phase relationship is maintained at a predetermined relationship.
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申请公布号 |
USRE44133(E1) |
申请公布日期 |
2013.04.09 |
申请号 |
US20090617924 |
申请日期 |
2009.11.13 |
申请人 |
MOYER JAMES C.;RUST TIMOTHY J.;MONOLITHIC POWER SYSTEMS, INC. |
发明人 |
MOYER JAMES C.;RUST TIMOTHY J. |
分类号 |
G05F1/00;H05B41/282 |
主分类号 |
G05F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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