JPS54136619A - Dc voltage stabilized power unit - Google Patents
Dc voltage stabilized power unitInfo
- Publication number
- JPS54136619A JPS54136619A JP4427678A JP4427678A JPS54136619A JP S54136619 A JPS54136619 A JP S54136619A JP 4427678 A JP4427678 A JP 4427678A JP 4427678 A JP4427678 A JP 4427678A JP S54136619 A JPS54136619 A JP S54136619A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- limit voltage
- power unit
- stabilized power
- circuit
- 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 protect switching element and transistor in switching circuit by setting up limiter voltage by providing limiter circuit.
CONSTITUTION: The limit voltage Vd is set up by providing a limiting circuit made up of the resistor 13, the resistor 14, and the diode 15. Thus, the diode is electrified and thus the limit voltage Vd is put in the input terminal of the comparison amplifier 17 in case where the output voltage Ve of the error voltage amplifier 9 becomes lower than the limit voltage Vd. Accordingly, the max. pulse width of driving signal supplied to the switching circuit 3 is determined by the limit voltage Vd, and therefore the switching element and the transistor 19 can be protected by selecting the voltage value.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4427678A JPS54136619A (en) | 1978-04-17 | 1978-04-17 | Dc voltage stabilized power unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4427678A JPS54136619A (en) | 1978-04-17 | 1978-04-17 | Dc voltage stabilized power unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54136619A true JPS54136619A (en) | 1979-10-23 |
Family
ID=12686977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4427678A Pending JPS54136619A (en) | 1978-04-17 | 1978-04-17 | Dc voltage stabilized power unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54136619A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123365A (en) * | 1982-01-14 | 1983-07-22 | Canon Inc | High voltage power source |
JPS62182817A (en) * | 1986-02-06 | 1987-08-11 | Canon Inc | Integrated circuit |
-
1978
- 1978-04-17 JP JP4427678A patent/JPS54136619A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123365A (en) * | 1982-01-14 | 1983-07-22 | Canon Inc | High voltage power source |
JPH0527340B2 (en) * | 1982-01-14 | 1993-04-20 | Canon Kk | |
JPS62182817A (en) * | 1986-02-06 | 1987-08-11 | Canon Inc | Integrated circuit |
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