JPS5758405A - Semiconductor electric circuit - Google Patents

Semiconductor electric circuit

Info

Publication number
JPS5758405A
JPS5758405A JP55132946A JP13294680A JPS5758405A JP S5758405 A JPS5758405 A JP S5758405A JP 55132946 A JP55132946 A JP 55132946A JP 13294680 A JP13294680 A JP 13294680A JP S5758405 A JPS5758405 A JP S5758405A
Authority
JP
Japan
Prior art keywords
voltage
collector
constant
current
transistor
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
JP55132946A
Other languages
Japanese (ja)
Inventor
Masayoshi Suzuki
Akio Sagawa
Junjiro Kitano
Toshio Hayashi
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
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
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, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP55132946A priority Critical patent/JPS5758405A/en
Publication of JPS5758405A publication Critical patent/JPS5758405A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To reduce error of a constant current output, by setting the voltage operating point of a current setting transistor to a region where a collector current is constant.
CONSTITUTION: A means 20 having a constant voltage characteristics is connected to base and collector of a current setting transistor 10, a voltage between th collector and emitter at setting is increased, and th nonlinear effect can be reduced. A voltage between the collector and emitter of the transistor 10 is increased by a voltage of a means 20 having the constant voltage characteristics, and the operating point is as shown in point (c), the voltage between the collector and emitter can be increased as VB3, and the constant current region of the transistor can be utilized, and the output current characteristics can be improved. As the means 20 of the constant voltage characteristics, battery, constant voltage diode and diode forward series connection can be used.
COPYRIGHT: (C)1982,JPO&Japio
JP55132946A 1980-09-26 1980-09-26 Semiconductor electric circuit Pending JPS5758405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55132946A JPS5758405A (en) 1980-09-26 1980-09-26 Semiconductor electric circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55132946A JPS5758405A (en) 1980-09-26 1980-09-26 Semiconductor electric circuit

Publications (1)

Publication Number Publication Date
JPS5758405A true JPS5758405A (en) 1982-04-08

Family

ID=15093186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55132946A Pending JPS5758405A (en) 1980-09-26 1980-09-26 Semiconductor electric circuit

Country Status (1)

Country Link
JP (1) JPS5758405A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342652A (en) * 1976-09-30 1978-04-18 Sony Corp Transistor circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342652A (en) * 1976-09-30 1978-04-18 Sony Corp Transistor circuit

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