JPS62159184U - - Google Patents
Info
- Publication number
- JPS62159184U JPS62159184U JP4610286U JP4610286U JPS62159184U JP S62159184 U JPS62159184 U JP S62159184U JP 4610286 U JP4610286 U JP 4610286U JP 4610286 U JP4610286 U JP 4610286U JP S62159184 U JPS62159184 U JP S62159184U
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- load
- control circuit
- output transistor
- 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
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係る過電流保護回路付きチヨ
ツパ制御回路の一実施例を示す回路図、第２図は
従来例の回路図である。
３……出力トランジスタ、４……負荷、Ａ……
検出回路、Ｂ……コンデンサ、Ｄ……発振回路、
Ｅ……出力制御回路。
FIG. 1 is a circuit diagram showing an embodiment of a chopper control circuit with an overcurrent protection circuit according to the present invention, and FIG. 2 is a circuit diagram of a conventional example. 3...Output transistor, 4...Load, A...
Detection circuit, B...capacitor, D...oscillation circuit,
E...Output control circuit.
Claims (1)
、該出力トランジスタのエミツタ―コレクタ間電
圧を検出する検出回路と、該検出回路が前記出力
トランジスタに負荷短絡による過電流が流れたこ
とを検出した時に充電されるコンデンサと、該コ
ンデンサの電位が一定値になつた時に出力が反転
する出力制御回路と、前記負荷が正常な時の出力
制御回路からの出力信号で発振を行い前記出力ト
ランジスタをオン・オフ制御し、かつ出力制御回
路が前記反転出力を送出した時に発振を停止し、
前記出力トランジスタをオフ状態にする発振回路
とより構成したことを特徴とする過電流保護回路
付きチヨツパ制御回路。 A load, an output transistor that drives the load, a detection circuit that detects the emitter-collector voltage of the output transistor, and a charging circuit that detects an overcurrent flowing through the output transistor due to a short circuit in the load. an output control circuit whose output is inverted when the potential of the capacitor reaches a certain value, and an output signal from the output control circuit when the load is normal, which oscillates to turn on and off the output transistor. and stops the oscillation when the output control circuit sends out the inverted output;
A chopper control circuit with an overcurrent protection circuit, comprising an oscillation circuit that turns off the output transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4610286U JPS62159184U (en) | 1986-03-31 | 1986-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4610286U JPS62159184U (en) | 1986-03-31 | 1986-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62159184U true JPS62159184U (en) | 1987-10-09 |
Family
ID=30865458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4610286U Pending JPS62159184U (en) | 1986-03-31 | 1986-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62159184U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117887B2 (en) * | 1980-12-27 | 1986-05-09 | Nippon Steel Corp |
-
1986
- 1986-03-31 JP JP4610286U patent/JPS62159184U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117887B2 (en) * | 1980-12-27 | 1986-05-09 | Nippon Steel Corp |