JPH0397339U - - Google Patents
Info
- Publication number
- JPH0397339U JPH0397339U JP583090U JP583090U JPH0397339U JP H0397339 U JPH0397339 U JP H0397339U JP 583090 U JP583090 U JP 583090U JP 583090 U JP583090 U JP 583090U JP H0397339 U JPH0397339 U JP H0397339U
- Authority
- JP
- Japan
- Prior art keywords
- output
- voltage
- winding
- circuit
- transformer
- 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
- 238000004804 winding Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 238000009499 grossing Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図はこの考案に係る多出力電源装置の一例
を示す電気回路図、第２図は従来の多出力電源装
置の構成を示す電気回路図、第３図は第２図のも
ので直列運転使用した場合の電気回路図、第４図
は三端子レギユレータの過電流保護カーブを示す
図、第５図は直列運転使用時における出力特性の
変化を示す図、第６図は直列運転使用時の動作変
化の説明図、第７図は三端子レギユレータの保護
のためにダイオードを使用した従来多出力電源装
置を示す電気回路図である。
５……トランス、５ａ……入力巻線、５ｂ……
制御巻線、５ｃ，５ｄ……出力巻線、６……スイ
ツチング素子、９……制御回路、１９，３４……
整流素子、２０……平滑コンデンサ、２１……出
力電圧検出回路、２２……分圧回路、２８……第
１のフオトカプラ、３０……シヤントレギユレー
タ、３６……三端子レギユレータ、４０……ダイ
オード、４１……検出手段、４３……短絡手段。
Fig. 1 is an electric circuit diagram showing an example of a multi-output power supply device according to this invention, Fig. 2 is an electric circuit diagram showing the configuration of a conventional multi-output power supply device, and Fig. 3 is the one shown in Fig. 2, which is operated in series. Figure 4 is a diagram showing the overcurrent protection curve of a three-terminal regulator, Figure 5 is a diagram showing changes in output characteristics when using series operation, Figure 6 is a diagram showing the change in output characteristics when using series operation. FIG. 7, which is an explanatory diagram of changes in operation, is an electric circuit diagram showing a conventional multi-output power supply device using diodes to protect a three-terminal regulator. 5...Transformer, 5a...Input winding, 5b...
Control winding, 5c, 5d... Output winding, 6... Switching element, 9... Control circuit, 19, 34...
Rectifying element, 20... Smoothing capacitor, 21... Output voltage detection circuit, 22... Voltage dividing circuit, 28... First photocoupler, 30... Shunt regulator, 36... Three terminal regulator, 40... ...Diode, 41...Detection means, 43...Short circuit means.
Claims (1)
するトランスと、このトランスの入力巻線に直列
接続されたスイツチング素子と、上記トランスの
メイン出力巻線に生起した交流を整流する素子と
、この整流出力を平滑する平滑コンデンサに並列
接続される分圧回路ならびにこの分圧回路の分圧
電圧と内部基準電圧とを比較するシヤントレギユ
レータをもつた出力電圧検出回路と、上記トラン
スの他の出力巻線に生起した交流を整流する素子
と、この整流素子の出力側に接続された三端子レ
ギユレータと、上記制御巻線に接続され、出力電
圧検出回路の検出出力を第１のフオトカプラを介
して受けて上記スイツチング素子のＯＮ・ＯＦＦ
時間比を制御して出力電圧を一定に保持させる制
御回路と、上記三端子レギユレータの出力側に接
続されて、出力の直列運転時に該三端子レギユレ
ータの入出力電圧差が高くなると導通して出力側
を短絡させるダイオードとを備え、上記直列運転
時に三端子レギユレータ出力側の電圧の逆転を検
出する手段と、この検出手段からの検出信号をも
とに上記メイン側出力を一時的に短絡させる短絡
手段とを設けたことを特徴とする多出力電源装置
。 A transformer having an input winding, a control winding, and a plurality of output windings, a switching element connected in series to the input winding of the transformer, and an element for rectifying alternating current generated in the main output winding of the transformer; An output voltage detection circuit having a voltage dividing circuit connected in parallel to a smoothing capacitor for smoothing this rectified output and a shunt regulator for comparing the divided voltage of this voltage dividing circuit with an internal reference voltage, and an output voltage detection circuit of the above transformer. An element that rectifies the alternating current generated in the other output winding, a three-terminal regulator connected to the output side of this rectifying element, and a first photocoupler connected to the control winding to output the detection output of the output voltage detection circuit. ON/OFF of the above switching element is received via
A control circuit that controls the time ratio to keep the output voltage constant is connected to the output side of the three-terminal regulator, and when the input and output voltage difference of the three-terminal regulator becomes high during output series operation, conduction occurs and the output is output. means for detecting a reversal of the voltage on the output side of the three-terminal regulator during series operation, and a short-circuit for temporarily shorting the main side output based on the detection signal from the detection means. A multi-output power supply device characterized in that it is provided with means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP583090U JPH0397339U (en) | 1990-01-25 | 1990-01-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP583090U JPH0397339U (en) | 1990-01-25 | 1990-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0397339U true JPH0397339U (en) | 1991-10-07 |
Family
ID=31509521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP583090U Pending JPH0397339U (en) | 1990-01-25 | 1990-01-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0397339U (en) |
-
1990
- 1990-01-25 JP JP583090U patent/JPH0397339U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0294500U (en) | ||
| JPH0397339U (en) | ||
| JPS63100991U (en) | ||
| JPH0214293U (en) | ||
| JPH03101185U (en) | ||
| JPH08331846A (en) | Power supply | |
| JPH03101183U (en) | ||
| JPH0624439B2 (en) | Switching Regulator | |
| JPS5855703Y2 (en) | Power supply for starting horizontal oscillation | |
| JPH0715348Y2 (en) | Stabilized power supply circuit | |
| JPH0249331U (en) | ||
| JPH0534232Y2 (en) | ||
| JPS5827215A (en) | Overload protecting device for multi-output switching power source | |
| JP2553784Y2 (en) | Overvoltage protection circuit for ringing choke converter | |
| JPS5836231Y2 (en) | starting device | |
| JPH01113585U (en) | ||
| JPS6349103Y2 (en) | ||
| JPS63146481U (en) | ||
| JPS6274494U (en) | ||
| JPH0279185U (en) | ||
| JPH0360878U (en) | ||
| JPS62111784U (en) | ||
| JPS631024B2 (en) | ||
| JPH0425482U (en) | ||
| JPH0363084U (en) |