JPS5660920A - Voltage trailing control circuit - Google Patents
Voltage trailing control circuitInfo
- Publication number
- JPS5660920A JPS5660920A JP13728379A JP13728379A JPS5660920A JP S5660920 A JPS5660920 A JP S5660920A JP 13728379 A JP13728379 A JP 13728379A JP 13728379 A JP13728379 A JP 13728379A JP S5660920 A JPS5660920 A JP S5660920A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- input current
- trq
- transformer
- 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.)
- Granted
Links
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Abstract
PURPOSE: To make it possible to keep constant electric power during voltage trailing even if a DC input voltage fluctuates by detecting the input current supplied to the primary side of a transformer by the peak current and by permitting the output voltage to trail when the input current exceeds a set value.
CONSTITUTION: Input current Iin supplied to the primary side of transformer T from DC electric power source DC is switched by switching transistor Q and the voltage across the secondary side of transformer T is rectified by rectifying diode D1 and applied to load RL. This secondary side voltage is detected by voltage detector VDET, whose detection output is applied to the base of TRQ by way of operational amplifier OPA2 and control circuit CONT, so that when the input current exceeds the set value, the output voltage will be permitted to trail. To the emitter of TRQ of this circuit, resistance R1 is connected and the voltage across this resistance R1 is applied to operational amplifier A1 via diode D2 for peak rectification to detect the peak current, TRQ is controlled to keep constant electric power when the Dc input voltage fluctuates.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13728379A JPS5943909B2 (en) | 1979-10-24 | 1979-10-24 | Voltage droop control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13728379A JPS5943909B2 (en) | 1979-10-24 | 1979-10-24 | Voltage droop control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5660920A true JPS5660920A (en) | 1981-05-26 |
JPS5943909B2 JPS5943909B2 (en) | 1984-10-25 |
Family
ID=15195053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13728379A Expired JPS5943909B2 (en) | 1979-10-24 | 1979-10-24 | Voltage droop control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5943909B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS592569A (en) * | 1982-06-10 | 1984-01-09 | Yokogawa Hewlett Packard Ltd | Switching regulator |
JPS59150866U (en) * | 1983-03-30 | 1984-10-09 | 金剛株式会社 | door device |
JPS60160084U (en) * | 1984-03-30 | 1985-10-24 | 日本電気ホームエレクトロニクス株式会社 | switching regulator |
US5317499A (en) * | 1990-04-16 | 1994-05-31 | Siemens Aktiengesellschaft | Direct-current converter with current limiting |
CN102386754A (en) * | 2010-09-28 | 2012-03-21 | 深圳市英威腾电源有限公司 | Current limiting protection method of diode clamping type multi-electrical level convertor and realization circuit thereof |
-
1979
- 1979-10-24 JP JP13728379A patent/JPS5943909B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS592569A (en) * | 1982-06-10 | 1984-01-09 | Yokogawa Hewlett Packard Ltd | Switching regulator |
JPH0139314B2 (en) * | 1982-06-10 | 1989-08-21 | Yokogawa Hyuuretsuto Patsukaado Kk | |
JPS59150866U (en) * | 1983-03-30 | 1984-10-09 | 金剛株式会社 | door device |
JPS60160084U (en) * | 1984-03-30 | 1985-10-24 | 日本電気ホームエレクトロニクス株式会社 | switching regulator |
JPH0246232Y2 (en) * | 1984-03-30 | 1990-12-06 | ||
US5317499A (en) * | 1990-04-16 | 1994-05-31 | Siemens Aktiengesellschaft | Direct-current converter with current limiting |
CN102386754A (en) * | 2010-09-28 | 2012-03-21 | 深圳市英威腾电源有限公司 | Current limiting protection method of diode clamping type multi-electrical level convertor and realization circuit thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS5943909B2 (en) | 1984-10-25 |
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