JPS57103414A - Current source circuit - Google Patents
Current source circuitInfo
- Publication number
- JPS57103414A JPS57103414A JP55178546A JP17854680A JPS57103414A JP S57103414 A JPS57103414 A JP S57103414A JP 55178546 A JP55178546 A JP 55178546A JP 17854680 A JP17854680 A JP 17854680A JP S57103414 A JPS57103414 A JP S57103414A
- Authority
- JP
- Japan
- Prior art keywords
- trs
- constitution
- base
- current
- current source
- 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.)
- Granted
Links
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To stabilize the current output, by connecting transistors in series respectively to plural trnsistors which have bases connected commonly to the base of one transistor.
CONSTITUTION: Transistors (TR) Q2' and Q3' are connected in series to TRs Q2 and Q3 which have bases connected commonly to the base of a TR Q1 of the diode constitution. Collectors of TRs Q2' and Q3', namely, the second collectors of TRs Q2 and Q3 are set to a low potential. By this constitution, even if an impedance Z1 becomes very large, the emitter current is less changed because the emitter current of the TR Q2 is flowed to the TR Q2', and a voltage VBE between the base and the emitter is not changed; and consequently, the output current of the TR Q3 is held constant.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55178546A JPS57103414A (en) | 1980-12-17 | 1980-12-17 | Current source circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55178546A JPS57103414A (en) | 1980-12-17 | 1980-12-17 | Current source circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57103414A true JPS57103414A (en) | 1982-06-28 |
JPS615286B2 JPS615286B2 (en) | 1986-02-17 |
Family
ID=16050366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55178546A Granted JPS57103414A (en) | 1980-12-17 | 1980-12-17 | Current source circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57103414A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6032821U (en) * | 1983-08-10 | 1985-03-06 | 三菱電機株式会社 | current mirror circuit |
-
1980
- 1980-12-17 JP JP55178546A patent/JPS57103414A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6032821U (en) * | 1983-08-10 | 1985-03-06 | 三菱電機株式会社 | current mirror circuit |
JPH0138979Y2 (en) * | 1983-08-10 | 1989-11-21 |
Also Published As
Publication number | Publication date |
---|---|
JPS615286B2 (en) | 1986-02-17 |
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