发明名称 |
POWER SOURCE |
摘要 |
A power source has a soft start circuit (12) comprising a transistor (Tr9) the emitter of which is connected to the emitter of a transistor (Tr1) whose base serves as a positive-phase input of a comparator (11), and the collector of which is grounded, a clamping circuit (10) connected between the base of the transistor (Tr1) and the base of the transistor (Tr9), a constant-current source (7) to which a power source voltage (Vcc) is applied via a switch (2), a capacitor (Cs) a terminal of which is connected to the base of the transistor (Tr9) and the other of which is grounded, a switch (9) connected to the capacitor (Cs) while a terminal (c) of which is connected to the constant-current source (7) and the other (d) of which is connected to a discharge circuit (8), and the discharge circuit (8).
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申请公布号 |
WO0104721(A1) |
申请公布日期 |
2001.01.18 |
申请号 |
WO2000JP04576 |
申请日期 |
2000.07.07 |
申请人 |
ROHM CO., LTD.;HOJO, YOSHIYUKI;HIRAMATSU, YOSHIHISA |
发明人 |
HOJO, YOSHIYUKI;HIRAMATSU, YOSHIHISA |
分类号 |
G05F1/56;G05F1/46;G05F1/565;G05F1/575;G05F3/22;(IPC1-7):G05F1/56 |
主分类号 |
G05F1/56 |
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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