发明名称 |
High frequency gas discharge lamp dimming ballast |
摘要 |
A high frequency gas discharge lamp dimming ballast with good line power factor is disclosed. The unit is controlled by a current sensing loop which senses control switch current rather than lamp current and employs simple circuitry with sufficiently rapid control response necessary to maintain high line power factor and stable lamp operating characteristics over a very wide range of light output. An isolated output transformer provides protection against most common miswire conditions and accurately regulates lamp energy over a wide range of input and lamp arc voltage conditions. A pulse width modulated control input provides an isolated control input for easier wiring and reduces the susceptibility of the control to noise interference.
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申请公布号 |
US4663570(A) |
申请公布日期 |
1987.05.05 |
申请号 |
US19840642072 |
申请日期 |
1984.08.17 |
申请人 |
LUTRON ELECTRONICS CO., INC. |
发明人 |
LUCHACO, DAVID G.;CAPEWELL, DENNIS |
分类号 |
H05B41/392;(IPC1-7):H05B37/02;H05B39/04;H05B41/36 |
主分类号 |
H05B41/392 |
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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