JPS5574615A - Constant voltage circuit - Google Patents
Constant voltage circuitInfo
- Publication number
- JPS5574615A JPS5574615A JP14825378A JP14825378A JPS5574615A JP S5574615 A JPS5574615 A JP S5574615A JP 14825378 A JP14825378 A JP 14825378A JP 14825378 A JP14825378 A JP 14825378A JP S5574615 A JPS5574615 A JP S5574615A
- Authority
- JP
- Japan
- Prior art keywords
- trq
- emitter
- base
- voltage
- collector
- 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
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE: To remarkably increase the stability of the output voltage of the unit, by taking the base to emitter voltage of a transistor as a multiple of the voltage between the base and emitter of Tr used for the diode.
CONSTITUTION: The base of the transistor TrQ1 is connected to the junction point of the resistors R1 and R2, and the collector is connected to the constant voltage output terminal P1. Further, the collector of TrQ3 is connected to the emitter of TrQ1 and the base and the collector of TrQ3 are connected and used as a diode, and the emitter is grounded. On the other hand, the collector of TrQ3 is connected to the junction of the resistors R1 and R3, and the voltage between the base and emitter is taken as a multiple of the voltage between the base and emitter of TrQ4 used as a diode. Thus, the variation of the output voltage due to the dispersion of the ratio of the resistors R1 and R2 is restricted to remarkably increase the stability of the output of unit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14825378A JPS5574615A (en) | 1978-11-30 | 1978-11-30 | Constant voltage circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14825378A JPS5574615A (en) | 1978-11-30 | 1978-11-30 | Constant voltage circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5574615A true JPS5574615A (en) | 1980-06-05 |
Family
ID=15448645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14825378A Pending JPS5574615A (en) | 1978-11-30 | 1978-11-30 | Constant voltage circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5574615A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982002964A1 (en) * | 1981-02-20 | 1982-09-02 | Inc Motorola | Variable temperature coefficient level shifter |
US4460865A (en) * | 1981-02-20 | 1984-07-17 | Motorola, Inc. | Variable temperature coefficient level shifting circuit and method |
-
1978
- 1978-11-30 JP JP14825378A patent/JPS5574615A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982002964A1 (en) * | 1981-02-20 | 1982-09-02 | Inc Motorola | Variable temperature coefficient level shifter |
US4460865A (en) * | 1981-02-20 | 1984-07-17 | Motorola, Inc. | Variable temperature coefficient level shifting circuit and method |
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