JPS6486222A - Constant-voltage circuit - Google Patents

Constant-voltage circuit

Info

Publication number
JPS6486222A
JPS6486222A JP24334687A JP24334687A JPS6486222A JP S6486222 A JPS6486222 A JP S6486222A JP 24334687 A JP24334687 A JP 24334687A JP 24334687 A JP24334687 A JP 24334687A JP S6486222 A JPS6486222 A JP S6486222A
Authority
JP
Japan
Prior art keywords
constant
voltage
collector
constitute
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24334687A
Other languages
Japanese (ja)
Inventor
Koichi Kanezaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP24334687A priority Critical patent/JPS6486222A/en
Publication of JPS6486222A publication Critical patent/JPS6486222A/en
Pending legal-status Critical Current

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  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE:To stabilize the voltage by adding a constant voltage generating circuit device between the collector of a transistor and the collector of the transistor to constitute a current mirror circuit. CONSTITUTION:The circuit is composed of first-third transistors (Tr) 8-10 to constitute a resistance for supplying a current, a diode 4, resistances 5-7 and a band gap circuit, fourth-fifth Trs 12-13 to constitute a current mirror circuit and seventh-eighth Trs 17-18 to constitute resistances 14-15 for supplying a constant current, a sixth Tr 16 and a Darlington circuit. At this time, between the collector of the Tr 10 and the collector of the Tr 12, a constant- voltage generating circuit device 19 is connected. Thus, even under the condition to impress the excessive surge voltage to an external power source terminal 1, the Tr 18 is driven without fail and the voltage rise of a constant-voltage output terminal 2 can be suppressed.
JP24334687A 1987-09-28 1987-09-28 Constant-voltage circuit Pending JPS6486222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24334687A JPS6486222A (en) 1987-09-28 1987-09-28 Constant-voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24334687A JPS6486222A (en) 1987-09-28 1987-09-28 Constant-voltage circuit

Publications (1)

Publication Number Publication Date
JPS6486222A true JPS6486222A (en) 1989-03-30

Family

ID=17102461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24334687A Pending JPS6486222A (en) 1987-09-28 1987-09-28 Constant-voltage circuit

Country Status (1)

Country Link
JP (1) JPS6486222A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0350223U (en) * 1989-09-22 1991-05-16
JPH0386420U (en) * 1989-12-21 1991-09-02
JP2006263837A (en) * 2005-03-22 2006-10-05 Disco Abrasive Syst Ltd Flattening method of wafer
JP2010211788A (en) * 2009-02-10 2010-09-24 Seiko Instruments Inc Voltage regulator
CN102103387A (en) * 2009-12-18 2011-06-22 上海华虹集成电路有限责任公司 Voltage stabilizing circuit adaptive to current balance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0350223U (en) * 1989-09-22 1991-05-16
JPH0386420U (en) * 1989-12-21 1991-09-02
JP2006263837A (en) * 2005-03-22 2006-10-05 Disco Abrasive Syst Ltd Flattening method of wafer
JP2010211788A (en) * 2009-02-10 2010-09-24 Seiko Instruments Inc Voltage regulator
CN102103387A (en) * 2009-12-18 2011-06-22 上海华虹集成电路有限责任公司 Voltage stabilizing circuit adaptive to current balance

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