JPS5663618A - Voltage drooping control circuit - Google Patents
Voltage drooping control circuitInfo
- Publication number
- JPS5663618A JPS5663618A JP13844279A JP13844279A JPS5663618A JP S5663618 A JPS5663618 A JP S5663618A JP 13844279 A JP13844279 A JP 13844279A JP 13844279 A JP13844279 A JP 13844279A JP S5663618 A JPS5663618 A JP S5663618A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electric power
- power supply
- switching element
- detection 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
Abstract
PURPOSE: To keep the electric power constant and prevent overload of the switching element, etc. at the time of drooping of the output voltage, even if the DC input voltage is varied, by superposing and applying the voltage being proportional to the voltage of the DC electric power supply, to the current detection circuit which detects an input current.
CONSTITUTION: An input current supplied to the primary side of the transformer T is detected by the current detection circuit consisting of the resistances R1WR3, the capacitor C3, etc., when it exceeds the set point, the output voltage is drooped by the control circuit CONT, at the time of short-circuit of the load RL or its approximate state, the DC electric power supply DC, the switching element, the transformer T, the diode D, etc. are protected, the voltage which is proportional to the voltage of the DC electric power supply DC is superposed and applied to the current detection circuit through the resistance 8, etc., and as a result, the electric power at the time of drooping of the output voltage is kept constant even if the voltage of the DC electric power supply DC is varied, and overload of the switching element, etc. can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13844279A JPS5926185B2 (en) | 1979-10-26 | 1979-10-26 | Voltage droop control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13844279A JPS5926185B2 (en) | 1979-10-26 | 1979-10-26 | Voltage droop control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5663618A true JPS5663618A (en) | 1981-05-30 |
JPS5926185B2 JPS5926185B2 (en) | 1984-06-25 |
Family
ID=15222082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13844279A Expired JPS5926185B2 (en) | 1979-10-26 | 1979-10-26 | Voltage droop control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5926185B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170362A (en) * | 1982-03-29 | 1983-10-06 | Koden Electronics Co Ltd | Protective device for switching power source |
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 |
US4761812A (en) * | 1985-12-10 | 1988-08-02 | U.S. Holding Company, Inc. | Constant power telephone line circuit |
-
1979
- 1979-10-26 JP JP13844279A patent/JPS5926185B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170362A (en) * | 1982-03-29 | 1983-10-06 | Koden Electronics Co Ltd | Protective device for switching power source |
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 | ||
US4761812A (en) * | 1985-12-10 | 1988-08-02 | U.S. Holding Company, Inc. | Constant power telephone line circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5926185B2 (en) | 1984-06-25 |
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