JPS62149281U - - Google Patents
Info
- Publication number
- JPS62149281U JPS62149281U JP3667486U JP3667486U JPS62149281U JP S62149281 U JPS62149281 U JP S62149281U JP 3667486 U JP3667486 U JP 3667486U JP 3667486 U JP3667486 U JP 3667486U JP S62149281 U JPS62149281 U JP S62149281U
- Authority
- JP
- Japan
- Prior art keywords
- output
- switching
- circuit
- switching transistor
- winding
- 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
- 238000004804 winding Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案のスイツチング制御型電源回路
の回路構成図、第２図は従来のスイツチング制御
型電源回路の要部回路構成図である。
３……コンバータトランス、４……誤差電圧検
出部、５……制御回路部、７……フオトカプラ（
絶縁装置）、ＴＲ１……スイツチングトランジス
タ、ＴＲ４……トランジスタ（スイツチング素子
）、Ｒ５……抵抗（過電流検出部）。
FIG. 1 is a circuit configuration diagram of a switching control type power supply circuit of the present invention, and FIG. 2 is a circuit configuration diagram of a main part of a conventional switching control type power supply circuit. 3...Converter transformer, 4...Error voltage detection section, 5...Control circuit section, 7...Photocoupler (
insulating device), TR 1 ... switching transistor, TR 4 ... transistor (switching element), R 5 ... resistor (overcurrent detection section).
Claims (1)
線とスイツチングトランジスタのコレクタ・エミ
ツタ間を直列に接続すると共に、前記トランスの
出力巻線から得る直流出力電圧の変動を検出する
誤差電圧検出回路と、該検出回路の出力に応答し
て前記スイツチングトランジスタのスイツチング
タイミングを制御する制御回路とを設け、前記出
力巻線から安定化直流出力を取り出す電源回路に
おいて、前記出力巻線に直列に接続した過電流検
出部と、この検出部の出力に応答してオン、オフ
するスイツチング素子とを設け、負荷電流が所定
値を超えると前記スイツチング素子がオンし、前
記誤差電圧検出回路の基準電圧を低下せしめるこ
とによつて、前記スイツチングトランジスタを強
制的にターンオフさせるように前記制御回路を動
作させるようにしたことを特徴とするスイツチン
グ制御型電源回路。 an error voltage detection circuit that connects an input winding of a converter transformer and a collector-emitter of a switching transistor in series with respect to a DC input, and detects fluctuations in a DC output voltage obtained from an output winding of the transformer; a control circuit for controlling the switching timing of the switching transistor in response to the output of the detection circuit; and a power supply circuit for extracting a stabilized DC output from the output winding; A current detection section and a switching element that turns on and off in response to the output of the detection section are provided, and when the load current exceeds a predetermined value, the switching element turns on and lowers the reference voltage of the error voltage detection circuit. A switching control type power supply circuit characterized in that the control circuit is operated to forcibly turn off the switching transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3667486U JPS62149281U (en) | 1986-03-13 | 1986-03-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3667486U JPS62149281U (en) | 1986-03-13 | 1986-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62149281U true JPS62149281U (en) | 1987-09-21 |
Family
ID=30847298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3667486U Pending JPS62149281U (en) | 1986-03-13 | 1986-03-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62149281U (en) |
-
1986
- 1986-03-13 JP JP3667486U patent/JPS62149281U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62149281U (en) | ||
| JPS63100991U (en) | ||
| JPH0214293U (en) | ||
| JPS602388U (en) | DC/DC converter power supply | |
| JPS6274494U (en) | ||
| JPS62185490U (en) | ||
| JPS6296718U (en) | ||
| JPS6333382U (en) | ||
| JPH0210784U (en) | ||
| JPS63202141U (en) | ||
| JPH01131291U (en) | ||
| JPS627779U (en) | ||
| JPH031632U (en) | ||
| JPS61171489U (en) | ||
| JPH01106864U (en) | ||
| JPS6031185U (en) | DC-DC converter | |
| JPH0179392U (en) | ||
| JPH0260442U (en) | ||
| JPH0171936U (en) | ||
| JPS6178313U (en) | ||
| JPS6244687U (en) | ||
| JPH01101177U (en) | ||
| JPS637822U (en) | ||
| JPS63202181U (en) | ||
| JPS61195787U (en) |