JPS5617411A - Switching electric power source - Google Patents
Switching electric power sourceInfo
- Publication number
- JPS5617411A JPS5617411A JP9215979A JP9215979A JPS5617411A JP S5617411 A JPS5617411 A JP S5617411A JP 9215979 A JP9215979 A JP 9215979A JP 9215979 A JP9215979 A JP 9215979A JP S5617411 A JPS5617411 A JP S5617411A
- Authority
- JP
- Japan
- Prior art keywords
- output
- voltage
- circuit
- transistor
- oscillating 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.)
- Granted
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
PURPOSE: To exercise practical output control with simple circuit constitution by varying the duty ratio of a switching transistor by making it possible to vary the flyback voltage of blocking oscillating circuit.
CONSTITUTION: Blocking oscillating circuit 10 oscillates by collector-base feedback circuit coupled with feedback winding 20B and switching transistor 11 repeats on-off operation by self-exciting. In the on period of the transistor 11, electric current flows through a primary winding 30A of output transformer 30 by way of rectifier 1, a primary winding 30A, diode 31, transistor 11 and rectifier 1 and an AC voltage develops across a secondary winding 30B of output transformer 30 accordingly and is rectified and smoothed by rectifying-smoothing circuit 40 to obtain DC output voltage E0, which is output between output terminals C and D. The output voltage E0 can be controlled by varying flyback voltage Ef (in direct proportion to said duty ratio) of blocking oscillating circuit 10.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9215979A JPS5617411A (en) | 1979-07-20 | 1979-07-20 | Switching electric power source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9215979A JPS5617411A (en) | 1979-07-20 | 1979-07-20 | Switching electric power source |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5617411A true JPS5617411A (en) | 1981-02-19 |
JPS5631608B2 JPS5631608B2 (en) | 1981-07-22 |
Family
ID=14046640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9215979A Granted JPS5617411A (en) | 1979-07-20 | 1979-07-20 | Switching electric power source |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5617411A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5392206A (en) * | 1993-02-12 | 1995-02-21 | Valor Electronics, Inc. | Control circuit for a switching DC-DC power converter including a controlled magnetic core flux resetting technique for output regulation |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58144056U (en) * | 1982-03-23 | 1983-09-28 | トヨタ自動車株式会社 | Diesel engine low temperature fuel heating device |
-
1979
- 1979-07-20 JP JP9215979A patent/JPS5617411A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5392206A (en) * | 1993-02-12 | 1995-02-21 | Valor Electronics, Inc. | Control circuit for a switching DC-DC power converter including a controlled magnetic core flux resetting technique for output regulation |
Also Published As
Publication number | Publication date |
---|---|
JPS5631608B2 (en) | 1981-07-22 |
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