JPS56122209A - Current miller circuit - Google Patents
Current miller circuitInfo
- Publication number
- JPS56122209A JPS56122209A JP2554480A JP2554480A JPS56122209A JP S56122209 A JPS56122209 A JP S56122209A JP 2554480 A JP2554480 A JP 2554480A JP 2554480 A JP2554480 A JP 2554480A JP S56122209 A JPS56122209 A JP S56122209A
- Authority
- JP
- Japan
- Prior art keywords
- current
- ratio
- secured
- emitter area
- output
- 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 obtain an output current of a desired ratio regardless of hfe of a transistor, by connecting a plural number of the 2nd current Miller circuits to the 1st current Miller circuit with the diode and the base shared to each other.
CONSTITUTION: In case when a ratio of 1:p:q:r is secured among the output currents I1, I21, I22 and I23, the current amplification factor of a transistor (TR) is set at hfe. Then the ratio of the emitter area is set to 1:m:a:b:c for the TRs Q1, Q2, Q41, Q42 and Q43. As a result, a ratio of 1:m:a:b:c is secured also among the emitter currents. At the same time, the ratio of the emitter area is set at p:q:r for the TRs Q31, Q32 and Q33. For the emitter area ratio as well as the relation 13 between each base current and the current amplification factor, an equal coefficient is secured for hfe in the relative equation 18 between the input current I1 and e.g. the output current I21. As a result, an output current of a desired ratio can be obtained with a high accuracy.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55025544A JPS6057766B2 (en) | 1980-02-29 | 1980-02-29 | current mirror circuit |
CA000363846A CA1152582A (en) | 1979-11-05 | 1980-11-03 | Current mirror circuit |
GB8035362A GB2063608B (en) | 1979-11-05 | 1980-11-04 | Current mirror circuits |
DE3041591A DE3041591C2 (en) | 1979-11-05 | 1980-11-04 | Current mirror circuit |
FR8023618A FR2469038A1 (en) | 1979-11-05 | 1980-11-05 | CURRENT MIRROR CIRCUIT |
NL8006055A NL8006055A (en) | 1979-11-05 | 1980-11-05 | POWER MIRROR SWITCH. |
US06/480,417 US4467289A (en) | 1979-11-05 | 1983-05-02 | Current mirror circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55025544A JPS6057766B2 (en) | 1980-02-29 | 1980-02-29 | current mirror circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56122209A true JPS56122209A (en) | 1981-09-25 |
JPS6057766B2 JPS6057766B2 (en) | 1985-12-17 |
Family
ID=12168919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55025544A Expired JPS6057766B2 (en) | 1979-11-05 | 1980-02-29 | current mirror circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6057766B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5866713U (en) * | 1981-10-28 | 1983-05-06 | 日本コロムビア株式会社 | amplifier |
-
1980
- 1980-02-29 JP JP55025544A patent/JPS6057766B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5866713U (en) * | 1981-10-28 | 1983-05-06 | 日本コロムビア株式会社 | amplifier |
Also Published As
Publication number | Publication date |
---|---|
JPS6057766B2 (en) | 1985-12-17 |
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