发明名称 |
Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and/or current to a load |
摘要 |
A commercially available power source is rectified by a diode bridge and a capacitor and supplied to a transformer via a terminal. One end of a primary coil is connected to the terminal and the other end is connected to a switching device. One end of a feedback coil is connected to the switching device and the other end is connected to the terminal. A negative feedback circuit is provided between the switching device and the terminal. A rectifying circuit comprising a diode and a capacitor is provided on a secondary coil. A node of the coil and the capacitor is connected to the terminal via a resistor. In detecting circuits, a voltage across the terminal is detected and a current across the resistor is detected. When the detected voltage and current are equal to predetermined values, a control signal is supplied to a feedback circuit.
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申请公布号 |
US6961255(B2) |
申请公布日期 |
2005.11.01 |
申请号 |
US20050097344 |
申请日期 |
2005.04.04 |
申请人 |
SONY CORPORATION |
发明人 |
NAGAI TAMIJI;IKEDA TAMON;YAMAZAKI KAZUO |
分类号 |
H02M3/28;H02M3/24;H02M3/335;H02M3/338;(IPC1-7):H02M3/335 |
主分类号 |
H02M3/28 |
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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