发明名称 |
Monitor deflection circuit |
摘要 |
A monitor deflection circuit includes a bipolar power transistor for applying power from a high voltage supply to a horizontal deflection coil. The monitor deflection circuit further includes a base drive circuit for selectively turning the bipolar power transistor on and off. The base drive circuit includes a flyback transformer having a primary winding and a secondary winding coupled to the base of the bipolar power transistor, a voltage source coupled to one end of the primary winding, and a drive switch coupling the other end of the primary winding to ground. The base driver circuit further includes a constant current circuit coupled between the voltage source and the primary winding of the flyback transformer for controlling a base current of the bipolar power transistor before the bipolar power transistor conducts.
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申请公布号 |
US6323606(B1) |
申请公布日期 |
2001.11.27 |
申请号 |
US20000749726 |
申请日期 |
2000.12.27 |
申请人 |
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION |
发明人 |
QIAN JINRONG |
分类号 |
G09G1/04;H03K4/62;H04N3/16;H04N3/18;(IPC1-7):G09G1/04 |
主分类号 |
G09G1/04 |
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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