JPS55146521A - Constant-current circuit - Google Patents
Constant-current circuitInfo
- Publication number
- JPS55146521A JPS55146521A JP5392379A JP5392379A JPS55146521A JP S55146521 A JPS55146521 A JP S55146521A JP 5392379 A JP5392379 A JP 5392379A JP 5392379 A JP5392379 A JP 5392379A JP S55146521 A JPS55146521 A JP S55146521A
- Authority
- JP
- Japan
- Prior art keywords
- emitter
- transistor
- constant
- base
- resistor
- 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
Abstract
PURPOSE: To improve a temperature characteristic of a constant-current circuit, by connecting base and emitter of another transistor in parallel between base and emitter of a transistor which obtains a constant-current output.
CONSTITUTION: The cathode side of diodes 1, 2 which are connected in series is grounded, the anode is connected each base of transistors 5, 7, a collector of the transistor 5 is connected to the power supply Vcc, and an emitter is grounded through a resistor 6. Moreover, as for the transistor 7, its emitter is connected to the emitter of the transistor 5 through a resistor 8. The transistor 7 which has inserted the resistor 8 into the emitter is connected in parallel between base and emitter of the transistor 5 which obtains a constant-current output, and by obtaining the constant-current output from its collector, a temperature characteristic of its current is improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5392379A JPS55146521A (en) | 1979-04-27 | 1979-04-27 | Constant-current circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5392379A JPS55146521A (en) | 1979-04-27 | 1979-04-27 | Constant-current circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55146521A true JPS55146521A (en) | 1980-11-14 |
Family
ID=12956235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5392379A Pending JPS55146521A (en) | 1979-04-27 | 1979-04-27 | Constant-current circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146521A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58215930A (en) * | 1982-06-04 | 1983-12-15 | エナジーサポート株式会社 | Phase leading condenser automatic controller |
-
1979
- 1979-04-27 JP JP5392379A patent/JPS55146521A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58215930A (en) * | 1982-06-04 | 1983-12-15 | エナジーサポート株式会社 | Phase leading condenser automatic controller |
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