JPS54126944A - Constant-current circuit - Google Patents
Constant-current circuitInfo
- Publication number
- JPS54126944A JPS54126944A JP3363578A JP3363578A JPS54126944A JP S54126944 A JPS54126944 A JP S54126944A JP 3363578 A JP3363578 A JP 3363578A JP 3363578 A JP3363578 A JP 3363578A JP S54126944 A JPS54126944 A JP S54126944A
- Authority
- JP
- Japan
- Prior art keywords
- change
- output
- temperature
- constant current
- constant
- 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 permit a constant current output, which is steady and stable irrespective of temperature changes, can be obtained by providing a temperature compensation circuit between the output of an amplifier and first and second constant current circuits.
CONSTITUTION: A temperature compensation circuit 7 is connected between the output of an amplifier 3 furnished with power from a constant voltage source 1 and the input side of first and second constant current circuits 4 and 5. A change of the potential difference (V2 - V1) between the input voltages V1 and V2 to the first and second constant current circuits 4 and 5 with a temperature change is compensated for by adjusting a variable resistor RV. A change of the output current I2 with a change of the output current I1 due to a temperature change is compensated for by a change of the output current I2 with a change of the potential difference (V2 - V1) with a temperature change, so that it is possible to stabilize the output current I2 irrespective of temperature changes to permit a stable constant current output to be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3363578A JPS54126944A (en) | 1978-03-25 | 1978-03-25 | Constant-current circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3363578A JPS54126944A (en) | 1978-03-25 | 1978-03-25 | Constant-current circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54126944A true JPS54126944A (en) | 1979-10-02 |
Family
ID=12391903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3363578A Pending JPS54126944A (en) | 1978-03-25 | 1978-03-25 | Constant-current circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54126944A (en) |
-
1978
- 1978-03-25 JP JP3363578A patent/JPS54126944A/en active Pending
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