JPS6457808A - Buffer amplifier - Google Patents
Buffer amplifierInfo
- Publication number
- JPS6457808A JPS6457808A JP62212910A JP21291087A JPS6457808A JP S6457808 A JPS6457808 A JP S6457808A JP 62212910 A JP62212910 A JP 62212910A JP 21291087 A JP21291087 A JP 21291087A JP S6457808 A JPS6457808 A JP S6457808A
- Authority
- JP
- Japan
- Prior art keywords
- trs
- npn
- output
- characteristic
- offset
- 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
Links
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE:To improve the temperature characteristic and the frequency characteristic by providing a level shift circuit and constituting the amplifier by the same type transistors(TR) so as to make an output DC offset zero. CONSTITUTION:An npn input TR Q1 forms an emitter follower, npn TRs Q2, Q3 of diode connection are connected in series to form a DC level shift circuit, an npn output TR Q4 forms an emitter follower and npn current adjusting TRs Q5-Q7 of the same characteristic are provided. Then the fluctuation of the voltage level by input and output TRs is corrected by the DC level shift circuit to easily make the DC offset at the output zero. Since the amplifier is made up of entirely the same type TRs, the identical characteristic is given to the temperature change, then the DC offset is easily kept to zero independently of the temperature change.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212910A JPS6457808A (en) | 1987-08-28 | 1987-08-28 | Buffer amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212910A JPS6457808A (en) | 1987-08-28 | 1987-08-28 | Buffer amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6457808A true JPS6457808A (en) | 1989-03-06 |
Family
ID=16630305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62212910A Pending JPS6457808A (en) | 1987-08-28 | 1987-08-28 | Buffer amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6457808A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04194512A (en) * | 1990-11-27 | 1992-07-14 | Matsushita Electric Ind Co Ltd | Knob of switch |
JPH05159084A (en) * | 1991-07-19 | 1993-06-25 | Mikuni Corp | Fuzzy inference circuit |
JP2002330036A (en) * | 2001-05-02 | 2002-11-15 | Mitsumi Electric Co Ltd | Signal output circuit |
-
1987
- 1987-08-28 JP JP62212910A patent/JPS6457808A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04194512A (en) * | 1990-11-27 | 1992-07-14 | Matsushita Electric Ind Co Ltd | Knob of switch |
JPH05159084A (en) * | 1991-07-19 | 1993-06-25 | Mikuni Corp | Fuzzy inference circuit |
JP2002330036A (en) * | 2001-05-02 | 2002-11-15 | Mitsumi Electric Co Ltd | Signal output circuit |
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