发明授权
US4609863A Power supply providing stabilized DC from an input voltage of AC
superposed on DC without disturbing the input voltage
失效
电源从直流叠加的交流输入电压提供稳定的直流，而不会干扰输入电压
- 专利标题： Power supply providing stabilized DC from an input voltage of AC superposed on DC without disturbing the input voltage
- 专利标题（中）： 电源从直流叠加的交流输入电压提供稳定的直流，而不会干扰输入电压
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申请号： US661994申请日： 1984-10-18
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公开(公告)号： US4609863A公开(公告)日： 1986-09-02
- 发明人: Kachio Asai , Yuji Tsuruga
- 申请人： Kachio Asai , Yuji Tsuruga
- 申请人地址： JPX both of JPX both of
- 专利权人： Iwatsu Electric Co., Ltd.,Rohm Company Limited
- 当前专利权人： Iwatsu Electric Co., Ltd.,Rohm Company Limited
- 当前专利权人地址： JPX both of JPX both of
- 优先权： JPX58-200475 19831025
- 主分类号： G05F1/56
- IPC分类号： G05F1/56 ; H04M19/08 ; G05F5/00
摘要：
This power supply device comprises a voltage regulating element, a constant-current source, first and second constant-current circuits, and a current switching circuit interposed between the first and second constant-current circuits and the constant-current source, and by comparing an input voltage with an output voltage to introduce constant current from the first constant-current circuit to the voltage regulating element when the input voltage is higher than the output voltage, while introducing the constant current from the second constant-current circuit to ground terminal when the input voltage is lower than the output voltage. Thus, a stabilized DC voltage may be produced from a DC voltage including a superposed AC signal without interfering with the AC communications signal.
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