JPS5647815A - Stabilized electric power supply unit - Google Patents
Stabilized electric power supply unitInfo
- Publication number
- JPS5647815A JPS5647815A JP12348479A JP12348479A JPS5647815A JP S5647815 A JPS5647815 A JP S5647815A JP 12348479 A JP12348479 A JP 12348479A JP 12348479 A JP12348479 A JP 12348479A JP S5647815 A JPS5647815 A JP S5647815A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- conducts
- power supply
- electric power
- 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 prevent a malfunction when the electric power supply is turned on, by separating the control electric supply circuit one by one, and also controlling the making time adequately.
CONSTITUTION: When voltage E(v) is applied, a current starts to flow immediately into the light emission diode 621, and a phototransistor 611 conducts, therefore a transistor 31 also conducts, and the output voltage e1(v) equal to Zener voltage of a Zener diode 41 is output. On the other hand, a current i3 flowing in the light emission diode 622 is increased slowly by the influence of a capacitor connected in parallel, therefore the phototransistor 612 does not conduct instantaneously but conducts after a prescribed period of time decided by the capacitor 71 and the resistor 23. Accordingly, the voltage e2(v) which is output to the terminal 52 is output, being delayed by a prescribed period of time after the input voltage E(v) has been applied.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12348479A JPS5647815A (en) | 1979-09-26 | 1979-09-26 | Stabilized electric power supply unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12348479A JPS5647815A (en) | 1979-09-26 | 1979-09-26 | Stabilized electric power supply unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5647815A true JPS5647815A (en) | 1981-04-30 |
Family
ID=14861765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12348479A Pending JPS5647815A (en) | 1979-09-26 | 1979-09-26 | Stabilized electric power supply unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647815A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63110920U (en) * | 1986-12-30 | 1988-07-16 |
-
1979
- 1979-09-26 JP JP12348479A patent/JPS5647815A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63110920U (en) * | 1986-12-30 | 1988-07-16 |
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