JPS63146481U - - Google Patents
Info
- Publication number
- JPS63146481U JPS63146481U JP3560288U JP3560288U JPS63146481U JP S63146481 U JPS63146481 U JP S63146481U JP 3560288 U JP3560288 U JP 3560288U JP 3560288 U JP3560288 U JP 3560288U JP S63146481 U JPS63146481 U JP S63146481U
- Authority
- JP
- Japan
- Prior art keywords
- current
- power supply
- time
- switching power
- output switching
- 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
- 238000009499 grossing Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の多出力スイツチング電源の過
負荷保護装置の一実施例を示す回路構成図、第２
図ａ，ｂと第３図はその動作を説明するための検
出信号波形と出力の電圧・電流特性を示す電圧波
形図、第４図は従来例を示す回路構成図である。
２１……直流電源、２２……スイツチングトラ
ンジスタ、２３……変換トランス、２４，２９…
…変流器、２５，３０……２次側高速整流ダイオ
ード、２６，３１……平滑用チヨーク、２７，３
２……平滑用コンデンサ、２８，３３……抵抗器
、３４……制御回路。
Fig. 1 is a circuit configuration diagram showing an embodiment of the overload protection device for a multi-output switching power supply according to the present invention;
Figures a and b and Figure 3 are voltage waveform diagrams showing detection signal waveforms and output voltage/current characteristics to explain the operation, and Figure 4 is a circuit configuration diagram showing a conventional example. 21...DC power supply, 22...Switching transistor, 23...Conversion transformer, 24, 29...
... Current transformer, 25, 30 ... Secondary side high-speed rectifier diode, 26, 31 ... Smoothing chain yoke, 27, 3
2... Smoothing capacitor, 28, 33... Resistor, 34... Control circuit.
Claims (1)
時間とオフ時間との時比率を制御し、変換トラン
スに備える複数の２次巻線出力から所望の複数種
類の直流電圧を得るように構成し、それぞれの出
力に対応した上記変換トランスの２次側巻線に平
滑用チヨークのフオワード電流を検出するように
変流器をそれぞれ設け、上記それぞれの変流器の
２次巻線間に抵抗器を接続し、検出した瞬時電流
のピーク値が一定になるように上記スイツチング
トランジスタのオン時間を制御する制御回路を設
けて多出力スイツチング電源の出力の過負荷を個
別に保護できる過負荷保護回路を備えてなる多出
力スイツチング電源の過負荷保護装置。 The time ratio between the on time and off time of the switching transistor is controlled from the DC power supply, and the desired multiple types of DC voltages are obtained from the outputs of the multiple secondary windings provided in the conversion transformer. A current transformer is installed in the secondary winding of the corresponding conversion transformer to detect the forward current of the smoothing current, and a resistor is connected between the secondary windings of each of the current transformers to detect the forward current of the smoothing current. The multi-output switching power supply is equipped with a control circuit that controls the on-time of the switching transistor so that the peak value of the instantaneous current constant, and an overload protection circuit that can individually protect output overloads of the multi-output switching power supply. Overload protection device for output switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3560288U JPS63146481U (en) | 1988-03-17 | 1988-03-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3560288U JPS63146481U (en) | 1988-03-17 | 1988-03-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63146481U true JPS63146481U (en) | 1988-09-27 |
Family
ID=30845247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3560288U Pending JPS63146481U (en) | 1988-03-17 | 1988-03-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63146481U (en) |
-
1988
- 1988-03-17 JP JP3560288U patent/JPS63146481U/ja active Pending