JPS554647A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPS554647A
JPS554647A JP7758878A JP7758878A JPS554647A JP S554647 A JPS554647 A JP S554647A JP 7758878 A JP7758878 A JP 7758878A JP 7758878 A JP7758878 A JP 7758878A JP S554647 A JPS554647 A JP S554647A
Authority
JP
Japan
Prior art keywords
circuit
voltage
flowing
current
load
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
JP7758878A
Other languages
Japanese (ja)
Inventor
Masaharu Ozaki
Shunpei Yamazaki
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.)
NIPPON PRECISION SAAKITSUTSU KK
Nippon Precision Circuits Inc
Original Assignee
NIPPON PRECISION SAAKITSUTSU KK
Nippon Precision Circuits Inc
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 NIPPON PRECISION SAAKITSUTSU KK, Nippon Precision Circuits Inc filed Critical NIPPON PRECISION SAAKITSUTSU KK
Priority to JP7758878A priority Critical patent/JPS554647A/en
Publication of JPS554647A publication Critical patent/JPS554647A/en
Pending legal-status Critical Current

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  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To obtain a constant voltage circuit which is capable of free setting of the output voltage by installing the level shift circuit and the reference voltage generation circuit constituted by short-circuiting the source and the gate of depression MOSFET(DMOST).
CONSTITUTION: Reference voltage generation circuit 4 gives a short circuit to the gate and source of DMOST2 to produce the constant current, and then supplies the constant current to MOS load 3 to deliver potential V1 at connection point P1 of MOS2 and 3. When the potential of output terminal 9 at the connection point of constant current MOS5 and load MOS6 is changed from 0 to power voltage VSS, the current flowing through MOS5 and that flowing through MOS load 6 become as shown by curve c and d respectively. And potential V2 at intersection Q2 of curves c and d becomes the output voltage of terminal 9 in level shift circuit 7. The output voltage V2 sufficiently higher than output voltage V1 of circuit 4 is delivered from circuit 7, and at the same time current I2 flowing through MOS5 is sufficiently more in amount than current I1 flowing to MOS2. As a result, a sufficient amount of power can be supplied to the load. In the same way, voltage V3 corresponding to intersection Q3 between curves c and e can be obtained from output terminal 8.
COPYRIGHT: (C)1980,JPO&Japio
JP7758878A 1978-06-27 1978-06-27 Constant voltage circuit Pending JPS554647A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7758878A JPS554647A (en) 1978-06-27 1978-06-27 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7758878A JPS554647A (en) 1978-06-27 1978-06-27 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPS554647A true JPS554647A (en) 1980-01-14

Family

ID=13638122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7758878A Pending JPS554647A (en) 1978-06-27 1978-06-27 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPS554647A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111618A (en) * 1980-12-27 1982-07-12 Citizen Watch Co Ltd Constant voltage circuit
JPS59105116A (en) * 1982-12-07 1984-06-18 Seiko Epson Corp constant current circuit
JPS59111419A (en) * 1982-12-16 1984-06-27 Mitsubishi Electric Corp Reference voltage generating circuit
JPS61110217A (en) * 1984-11-05 1986-05-28 Nec Ic Microcomput Syst Ltd Constant-voltage circuit
US4616172A (en) * 1983-12-29 1986-10-07 At&T Bell Laboratories Voltage generator for telecommunication amplifier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150446A (en) * 1974-10-30 1976-05-04 Hitachi Ltd TEIDENATSU KAIRO
JPS5359846A (en) * 1976-11-10 1978-05-30 Nec Corp Constant voltage circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150446A (en) * 1974-10-30 1976-05-04 Hitachi Ltd TEIDENATSU KAIRO
JPS5359846A (en) * 1976-11-10 1978-05-30 Nec Corp Constant voltage circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111618A (en) * 1980-12-27 1982-07-12 Citizen Watch Co Ltd Constant voltage circuit
JPS59105116A (en) * 1982-12-07 1984-06-18 Seiko Epson Corp constant current circuit
JPS59111419A (en) * 1982-12-16 1984-06-27 Mitsubishi Electric Corp Reference voltage generating circuit
US4616172A (en) * 1983-12-29 1986-10-07 At&T Bell Laboratories Voltage generator for telecommunication amplifier
JPS61110217A (en) * 1984-11-05 1986-05-28 Nec Ic Microcomput Syst Ltd Constant-voltage circuit

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