JPH0354329U - - Google Patents
Info
- Publication number
- JPH0354329U JPH0354329U JP11503989U JP11503989U JPH0354329U JP H0354329 U JPH0354329 U JP H0354329U JP 11503989 U JP11503989 U JP 11503989U JP 11503989 U JP11503989 U JP 11503989U JP H0354329 U JPH0354329 U JP H0354329U
- Authority
- JP
- Japan
- Prior art keywords
- reference voltage
- power supply
- output current
- voltage
- peak
- 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
- 230000000052 comparative effect Effects 0.000 claims 1
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例の構成を示す構成図
、第２図は第１図に示した装置の動作状態におけ
る各部の信号波形を示す波形図、第３図は本考案
の他の実施例の構成を示す構成図である。
１…誤差増幅器、２…基準電圧部、３…比較器
、４…遅延回路。
FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention, FIG. 2 is a waveform diagram showing signal waveforms of various parts in the operating state of the device shown in FIG. 1, and FIG. FIG. 2 is a configuration diagram showing the configuration of an example. 1...Error amplifier, 2...Reference voltage section, 3...Comparator, 4...Delay circuit.
Claims (1)
ｐと定格値以上尖頭値未満の出力電流に対応する
第２の基準電圧Ｖｍとを選択的に切り替えて出力
する基準電圧部２と、 電源の出力電流に応じた電圧Ｖｉと基準電圧部
２の基準電圧ｖ３とを比較して誤差検出を行う誤
差増幅器１と、 電源の出力電流に応じた電圧Ｖｉと第２の基準
電圧Ｖｍとを比較を比較する比較器３と、 比較器３の比較出力を一定時間遅延させて出力
する遅延回路４とを有し、 基準電圧部２は電源の出力電流に応じた電圧Ｖ
ｉが第２の基準電圧を所定時間以上越えたときに
、第１の基準電圧Ｖｐから第２の基準電圧Ｖｍに
切り替えるよう構成したことを特徴とする電源の
尖頭過電流保護回路。[Claims for Utility Model Registration] First reference voltage V corresponding to the peak value of the output current
a reference voltage section 2 that selectively switches and outputs p and a second reference voltage Vm corresponding to an output current greater than or equal to the rated value and less than the peak value; and a reference voltage section 2 and a voltage Vi corresponding to the output current of the power supply. an error amplifier 1 that detects an error by comparing a reference voltage V3 of the power supply; a comparator 3 that compares a voltage Vi corresponding to the output current of the power supply with a second reference voltage Vm; It has a delay circuit 4 that delays the comparative output for a certain period of time and outputs it, and the reference voltage section 2 generates a voltage V according to the output current of the power supply.
1. A peak overcurrent protection circuit for a power supply, characterized in that the peak overcurrent protection circuit for a power supply is configured to switch from the first reference voltage Vp to the second reference voltage Vm when i exceeds the second reference voltage for a predetermined time or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11503989U JPH0354329U (en) | 1989-09-29 | 1989-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11503989U JPH0354329U (en) | 1989-09-29 | 1989-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0354329U true JPH0354329U (en) | 1991-05-27 |
Family
ID=31663385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11503989U Pending JPH0354329U (en) | 1989-09-29 | 1989-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0354329U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010074874A (en) * | 2008-09-16 | 2010-04-02 | Fujitsu Telecom Networks Ltd | Rush current control circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112417A (en) * | 1981-12-25 | 1983-07-04 | 富士通株式会社 | Power source control system |
-
1989
- 1989-09-29 JP JP11503989U patent/JPH0354329U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112417A (en) * | 1981-12-25 | 1983-07-04 | 富士通株式会社 | Power source control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010074874A (en) * | 2008-09-16 | 2010-04-02 | Fujitsu Telecom Networks Ltd | Rush current control circuit |
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