发明名称 |
Inverter circuit for light source |
摘要 |
An inverter circuit drives a light source module. An input signal circuit provides electrical signals. A power stage circuit converts the electrical signals to square-wave signals. A transformer circuit converts the square-wave signals to alternating current (AC) signals capable of powering the light source module. A voltage detection circuit detects voltage applied on the light source module so as to output a detected voltage signal. A feedback circuit feeds current flowing through the light source module so as to output a current feedback signal. A protection circuit is connected to the voltage detection circuit and the feedback circuit, for outputting a latch signal according to the detected voltage signal or the current feedback signal. A pulse-width modulation control circuit outputs a switch signal to the power stage circuit according to the latch signal. The input signal circuit also provides the electrical signals to the protection circuit. |
申请公布号 |
US8102124(B2) |
申请公布日期 |
2012.01.24 |
申请号 |
US20090420806 |
申请日期 |
2009.04.08 |
申请人 |
HUNG TSUNG-LIANG;LIN YI-HSUN;TSENG CHIA-HSIN;AMPOWER TECHNOLOGY CO., LTD. |
发明人 |
HUNG TSUNG-LIANG;LIN YI-HSUN;TSENG CHIA-HSIN |
分类号 |
H05B41/292 |
主分类号 |
H05B41/292 |
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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