发明名称 |
POWER SUPPLY CIRCUIT CAPABLE OF REDUCING THE NUMBER OF EXTERNAL COMPONENTS |
摘要 |
An inverting negative voltage DC-DC power supply circuit comprises a first resistor having one end connected to an output terminal for converting a change in output voltage into a current. A zero-volt clamp circuit is connected to the other end of the first resistor and comprises a first and second transistor. A current mirror circuit comprises a third and fourth transistor and is connected to the zero-volt clamp circuit for causing a current of the same value as that of a current flowing in the zero-volt clamp circuit to flow. A second resistor is connected to the current mirror circuit for converting a change in current flowing from the zero-volt clamp circuit into a voltage.
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申请公布号 |
US2007236203(A1) |
申请公布日期 |
2007.10.11 |
申请号 |
US20070733075 |
申请日期 |
2007.04.09 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
KOYAMA HIDEAKI;SATO YASUSHI |
分类号 |
G05F3/16 |
主分类号 |
G05F3/16 |
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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