JPS6431213A - Constant current circuit - Google Patents
Constant current circuitInfo
- Publication number
- JPS6431213A JPS6431213A JP18824087A JP18824087A JPS6431213A JP S6431213 A JPS6431213 A JP S6431213A JP 18824087 A JP18824087 A JP 18824087A JP 18824087 A JP18824087 A JP 18824087A JP S6431213 A JPS6431213 A JP S6431213A
- Authority
- JP
- Japan
- Prior art keywords
- input current
- variation
- base
- resistor
- node
- 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
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
PURPOSE:To suppress the variation of an output current to the variation of an input current by supplying the input current to a node between the base of a 1st transistor (TR) and a 1st resistor and supplying the output current from the collector of a 2nd TR to a load circuit. CONSTITUTION:A resistor R2 is connected between a node of the base of a TR Q1 and an input current source 11 and a node of the collector of the TR Q1 and the base of a TR Q2. Even if the input current IIN is varied, the input current IIN is allowed to flow into the resistor R2 and the variation of the base voltage of the TR Q2 can be suppressed to a small value by a voltage drop R2IIN generated by the inflow of the input current IIN. Consequently, the variation of the output current to that of the input current IIN can be suppressed to a small value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18824087A JPS6431213A (en) | 1987-07-28 | 1987-07-28 | Constant current circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18824087A JPS6431213A (en) | 1987-07-28 | 1987-07-28 | Constant current circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6431213A true JPS6431213A (en) | 1989-02-01 |
Family
ID=16220244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18824087A Pending JPS6431213A (en) | 1987-07-28 | 1987-07-28 | Constant current circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6431213A (en) |
-
1987
- 1987-07-28 JP JP18824087A patent/JPS6431213A/en active Pending
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