JPS5657120A - Stabilized power supply circuit - Google Patents
Stabilized power supply circuitInfo
- Publication number
- JPS5657120A JPS5657120A JP13401779A JP13401779A JPS5657120A JP S5657120 A JPS5657120 A JP S5657120A JP 13401779 A JP13401779 A JP 13401779A JP 13401779 A JP13401779 A JP 13401779A JP S5657120 A JPS5657120 A JP S5657120A
- Authority
- JP
- Japan
- Prior art keywords
- load current
- emitter follower
- negative load
- diodes
- power supply
- 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)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
PURPOSE: To stabilize the voltage even in the circuit where a negative load current is flowed, by providing an NPN emitter follower transistor for the positive load current and by providing a PNP transistor to absorb the negative load current.
CONSTITUTION: PNP emitter follower transistor TR13 is connected to the emitter of NPN emitter follower TR4 of the second stage. Diodes 14 and 15 and resistance 5 are connected in series to the emitter of NPN emitter follower TR3 of the first stage, and further, the connection point between resistance 5 and diode 15 is connected to the base of TR13. Diodes and transistors having equal polarity and characteristic respectively are selected as diodes 14 and 15 and transistors TRs 4 and 13. By this circuit constitution, the negative load current is absorbed, and the function of voltage stabilization is not damaged for positive as well as negative load currents, so that the voltage can be stabilized surely.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13401779A JPS5657120A (en) | 1979-10-16 | 1979-10-16 | Stabilized power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13401779A JPS5657120A (en) | 1979-10-16 | 1979-10-16 | Stabilized power supply circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657120A true JPS5657120A (en) | 1981-05-19 |
Family
ID=15118419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13401779A Pending JPS5657120A (en) | 1979-10-16 | 1979-10-16 | Stabilized power supply circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657120A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60105022A (en) * | 1983-11-11 | 1985-06-10 | Hitachi Ltd | Bias circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5349246A (en) * | 1976-10-15 | 1978-05-04 | Toshiba Corp | Constant voltage circuit |
-
1979
- 1979-10-16 JP JP13401779A patent/JPS5657120A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5349246A (en) * | 1976-10-15 | 1978-05-04 | Toshiba Corp | Constant voltage circuit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60105022A (en) * | 1983-11-11 | 1985-06-10 | Hitachi Ltd | Bias circuit |
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