发明授权
US4217535A Constant-voltage circuit with a diode and MOS transistors operating in
the saturation region
失效
具有二极管的恒压电路和在饱和区域工作的MOS晶体管
- 专利标题： Constant-voltage circuit with a diode and MOS transistors operating in the saturation region
- 专利标题（中）： 具有二极管的恒压电路和在饱和区域工作的MOS晶体管
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申请号： US864085申请日： 1977-12-23
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公开(公告)号： US4217535A公开(公告)日： 1980-08-12
- 发明人: Yasoji Suzuki , Takeshi Hitotsuyanagi , Tetsuya Iida
- 申请人： Yasoji Suzuki , Takeshi Hitotsuyanagi , Tetsuya Iida
- 申请人地址： JPX
- 专利权人： Tokyo Shibaura Electric Co., Ltd.
- 当前专利权人： Tokyo Shibaura Electric Co., Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX51/156942 19761225; JPX51/156943 19761225
- 主分类号： G01R31/36
- IPC分类号： G01R31/36 ; G05F3/24 ; H02J7/10 ; H03K3/26
摘要：
A constant-voltage circuit in which a diode and an MOS transistor are connected in series between power supply terminals between which a battery power source is connected. The MOS transistor is biased to operate in the saturation region. The forward voltage drop across the diode is kept substantially constant independent of variations in battery voltage and temperature. This constant-voltage circuit may preferably be used in a battery checker circuit for detecting the end of battery life.
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