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JPS5663623A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPS5663623A
JPS5663623A JP13762579A JP13762579A JPS5663623A JP S5663623 A JPS5663623 A JP S5663623A JP 13762579 A JP13762579 A JP 13762579A JP 13762579 A JP13762579 A JP 13762579A JP S5663623 A JPS5663623 A JP S5663623A
Authority
JP
Japan
Prior art keywords
ratio
load
constant
constant voltage
current 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
JP13762579A
Other languages
Japanese (ja)
Inventor
Masahiro Yamamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13762579A priority Critical patent/JPS5663623A/en
Publication of JPS5663623A publication Critical patent/JPS5663623A/en
Pending legal-status Critical Current

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  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To make it possible to improve both the ripple removal ratio and the S/N ratio, by using the constant current circuit as a load.
CONSTITUTION: The constant-current circuit Io is used as the load of the forward diodes D1WDn which have been connected in series, forming the constant voltage. The constant current Io is made to have a current value enough to reduce the dynamic resistance re of the diodes D1WDn. The large load resistance RL is obtained by using the constant current circuit as a load, also the dynamic resistance re is reduced by making a enough current flow into each diode, ratio of both can be made large, and therefore the ripple removal ratio can be improved. Furthermore, since no Zener diode is used in order to obtain the constant voltage, deterioration of the S/N ratio can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP13762579A 1979-10-26 1979-10-26 Constant voltage circuit Pending JPS5663623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13762579A JPS5663623A (en) 1979-10-26 1979-10-26 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13762579A JPS5663623A (en) 1979-10-26 1979-10-26 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPS5663623A true JPS5663623A (en) 1981-05-30

Family

ID=15203029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13762579A Pending JPS5663623A (en) 1979-10-26 1979-10-26 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPS5663623A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884318A (en) * 1981-11-16 1983-05-20 Matsushita Electric Ind Co Ltd Constant voltage circuit
JPS6054029A (en) * 1983-09-02 1985-03-28 Matsushita Electric Ind Co Ltd Constant voltage bias circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884318A (en) * 1981-11-16 1983-05-20 Matsushita Electric Ind Co Ltd Constant voltage circuit
JPS6054029A (en) * 1983-09-02 1985-03-28 Matsushita Electric Ind Co Ltd Constant voltage bias circuit

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