JPH03106834U - - Google Patents
Info
- Publication number
- JPH03106834U JPH03106834U JP1432290U JP1432290U JPH03106834U JP H03106834 U JPH03106834 U JP H03106834U JP 1432290 U JP1432290 U JP 1432290U JP 1432290 U JP1432290 U JP 1432290U JP H03106834 U JPH03106834 U JP H03106834U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current detection
- overcurrent protection
- operation stop
- self
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Description
第１図は本考案の電源盤の過電流保護回路の一
実施例を示す回路ブロツク図、第２図は従来の電
源盤の過電流保護回路の一例を示す回路ブロツク
図である。
１……入力端子、２……自励スイツチングレギ
ユレータ、３，７……電流検出回路、４……出力
端子、５……動作停止回路、６……リセツト回路
、８……インピーダンス回路。
FIG. 1 is a circuit block diagram showing an embodiment of an overcurrent protection circuit for a power supply panel according to the present invention, and FIG. 2 is a circuit block diagram showing an example of a conventional overcurrent protection circuit for a power supply panel. 1...Input terminal, 2...Self-excited switching regulator, 3, 7...Current detection circuit, 4...Output terminal, 5...Operation stop circuit, 6...Reset circuit, 8...Impedance circuit .
Claims (1)
路上に設けた第１の電流検出回路と、この第１の
電流検出回路の検出信号を第１の制御入力とする
自己保持型の動作停止回路とを備え、この動作停
止回路の出力を前記スイツチングレギユレータの
制御端子に入力してなる電源盤の過電流保護回路
において、前記スイツチングレギユレータの入力
と前記電源盤の出力との間に第２の電流検出回路
とインピーダンス回路の直列回路を接続し、前記
第２の電流検出回路の検出信号をリセツト回路を
介して前記動作停止回路の第２の制御入力とする
ことを特徴とする電源盤の過電流保護回路。 A first current detection circuit provided on the output path of a self-excited switching regulator; and a self-holding operation stop circuit that uses a detection signal of the first current detection circuit as a first control input. In an overcurrent protection circuit for a power supply board, which is configured by inputting the output of the operation stop circuit to the control terminal of the switching regulator, the overcurrent protection circuit is provided with A series circuit of a second current detection circuit and an impedance circuit is connected to the circuit, and a detection signal of the second current detection circuit is used as a second control input of the operation stop circuit via a reset circuit. Overcurrent protection circuit for power panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1432290U JPH03106834U (en) | 1990-02-15 | 1990-02-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1432290U JPH03106834U (en) | 1990-02-15 | 1990-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03106834U true JPH03106834U (en) | 1991-11-05 |
Family
ID=31517691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1432290U Pending JPH03106834U (en) | 1990-02-15 | 1990-02-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03106834U (en) |
-
1990
- 1990-02-15 JP JP1432290U patent/JPH03106834U/ja active Pending