JPS5671120A - Power supply circuit - Google Patents
Power supply circuitInfo
- Publication number
- JPS5671120A JPS5671120A JP14819079A JP14819079A JPS5671120A JP S5671120 A JPS5671120 A JP S5671120A JP 14819079 A JP14819079 A JP 14819079A JP 14819079 A JP14819079 A JP 14819079A JP S5671120 A JPS5671120 A JP S5671120A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- zener diode
- stabilizing
- output voltage
- output voltages
- 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 secure the number of degrees of freedom for load circuit design, by providing only one current supply source of the stabilizing Zener diode in the regulated power supply circuit which outputs different stabilizing output voltages and by making it possible to make current supply intermittent by the OR detecting circuit of each stabilizing output voltage.
CONSTITUTION: At the power VIN supply time, since respective output voltages V1 and V2 are zero, diodes D1 and D2 are turned on, and transistor Q4 is cut off, and Zener diode Z1 is the saturation voltage level between the collector and the emitter of transistor Q3. When output voltages V1 and V2 rise and anode potentials of diodes D1 and D2 become voltages of the turn-on level or more of transistor Q4, transistor Q3 is cut off, and output voltages V1 and V2 rise rapidly. At the fall time, since the bias current of Zener diode Z2 on the stabilizing output voltage V2 line is supplied on a basis of the potential of Zener diode Z1 on the stabilizing output voltage V1 line, base potentials of respective regulate transistors Q1 and Q2 change uniformly, and therefore, the rise speed of each output voltage becomes uniform.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14819079A JPS5671120A (en) | 1979-11-15 | 1979-11-15 | Power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14819079A JPS5671120A (en) | 1979-11-15 | 1979-11-15 | Power supply circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5671120A true JPS5671120A (en) | 1981-06-13 |
Family
ID=15447253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14819079A Pending JPS5671120A (en) | 1979-11-15 | 1979-11-15 | Power supply circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5671120A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57187061A (en) * | 1981-05-12 | 1982-11-17 | Mitsubishi Motors Corp | Sealing agent coating device |
JP2007065205A (en) * | 2005-08-30 | 2007-03-15 | Denso Corp | Display device |
-
1979
- 1979-11-15 JP JP14819079A patent/JPS5671120A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57187061A (en) * | 1981-05-12 | 1982-11-17 | Mitsubishi Motors Corp | Sealing agent coating device |
JP2007065205A (en) * | 2005-08-30 | 2007-03-15 | Denso Corp | Display device |
JP4626451B2 (en) * | 2005-08-30 | 2011-02-09 | 株式会社デンソー | Display device |
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