发明名称 |
ELECTRONIC BALLAST WITH PREHEATING AND DIMMING CONTROL |
摘要 |
<p>A ballast circuit for controlling preheating, ignition or performing dimming of a gas discharge lamp such as a compact fluorescent lamp is disclosed. The ballast circuit has an inverter connected to a pair of input terminals for receiving a supply voltage, a base drive transformer connected to the switching transistor inverter to provide a drive signal, a resonant circuit connected to the switching transistor inverter, and a loading circuit connected to the base drive transformer. The base drive transformer includes a primary winding and a secondary winding set. The loading circuit is adapted for at least temporarily saturating the base drive transformer and thus effecting in the resonant circuit an oscillating frequency different from a natural resonant frequency of the resonant circuit.</p> |
申请公布号 |
WO2006056143(A1) |
申请公布日期 |
2006.06.01 |
申请号 |
WO2005CN02050 |
申请日期 |
2005.11.29 |
申请人 |
CENTURY CONCEPT LTD.;CHAN, CHO SING;BEZDON, RONALD J. |
发明人 |
CHAN, CHO SING;BEZDON, RONALD J. |
分类号 |
H05B41/295;H05B41/282;H05B41/392 |
主分类号 |
H05B41/295 |
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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