JPS57132764A - Switching regulator - Google Patents
Switching regulatorInfo
- Publication number
- JPS57132764A JPS57132764A JP1616181A JP1616181A JPS57132764A JP S57132764 A JPS57132764 A JP S57132764A JP 1616181 A JP1616181 A JP 1616181A JP 1616181 A JP1616181 A JP 1616181A JP S57132764 A JPS57132764 A JP S57132764A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- transistor
- transformer
- switching regulator
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE:To protect a switching regulator at the time of shortcircuiting a load by connecting a rectifier and a capacitor to the base coil of a transistor, comparing the voltage of the capacitor with the preset voltage to control the current of the base coil. CONSTITUTION:The output of a rectifier DS2 is controlled ON or OFF by a switching circuit which is composed of a transistor Q2 and primary coils L1, L2 of a transformer T2, thereby obtaining an output at the secondary side of the transformer. A diode D9 and a capacitor C11 are connected to the base coil L2 of the transformer T2 so that, when the voltage of the condenser C11 is higher than the voltage of a zener diode ZD1, a current flows from the coil L2 to the transistor Q3. Accordingly, the output voltage is lowered at the time of shortcircuiting a load, and after the transistor Q2 is interrupted, it is restarted when the voltage of the capacitor C11 is sufficiently reduced. Therefore, the quantity of heat can be reduced, thereby completely protecting a switching regulator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1616181A JPS57132764A (en) | 1981-02-04 | 1981-02-04 | Switching regulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1616181A JPS57132764A (en) | 1981-02-04 | 1981-02-04 | Switching regulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57132764A true JPS57132764A (en) | 1982-08-17 |
Family
ID=11908778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1616181A Pending JPS57132764A (en) | 1981-02-04 | 1981-02-04 | Switching regulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57132764A (en) |
-
1981
- 1981-02-04 JP JP1616181A patent/JPS57132764A/en active Pending
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