发明名称 |
Voltage stabilizing circuit of switching power supply circuit |
摘要 |
A voltage stabilizing circuit comprising a voltage detecting circuit for detecting a control voltage in response to an output voltage of the voltage stabilizing circuit, and a control circuit for stabilizing, based on the control voltage, the output voltage of the electronic device. To remove the component of a base-emitter voltage from the control voltage, the voltage detecting circuit includes a first series circuit and a second series circuit connected to each other in series. The first series circuit consists of a first resistor and a first transistor connected in series. The second series circuit consists of a second resistor and a second transistor connected in series. The second transistor is connected to function as a diode connection. The first resistor and the second resistor have substantially the same resistances. Thus the control voltage is made to be substantially the same as the output voltage.
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申请公布号 |
US5336987(A) |
申请公布日期 |
1994.08.09 |
申请号 |
US19920950644 |
申请日期 |
1992.09.23 |
申请人 |
FUJITSU LIMITED |
发明人 |
KIMURA, YASUHIRO;TAKAYAMA, TOMIO |
分类号 |
G01R19/32;G05F1/56;(IPC1-7):G05F1/56 |
主分类号 |
G01R19/32 |
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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