JPS6077288U - Overvoltage protection circuit - Google Patents
Overvoltage protection circuitInfo
- Publication number
- JPS6077288U JPS6077288U JP16887183U JP16887183U JPS6077288U JP S6077288 U JPS6077288 U JP S6077288U JP 16887183 U JP16887183 U JP 16887183U JP 16887183 U JP16887183 U JP 16887183U JP S6077288 U JPS6077288 U JP S6077288U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- quasi
- transformer
- output circuit
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は過電圧防止回路を有しないクロスレギユレーシ
ョン方式の多出力電源の構成を示した回路図、第２図は
従来のダミー抵抗による過電圧防止回路の構成を示した
回路図、第３図は従来のチョークコイルによる過電圧防
止回路の構成を示した回路図、第４図は本考案による過
電防止回路の一実施例の構成を示した回路図、第５図は
第４図の回路の動作を説明するための要部回路図、第６
図は本考案による過電圧防止回路の他の一実施例の構成
を示した要部回路図である。
１０−０・・・安定出力回路、１０−１〜１０−ｎ・・
・クロスレギユレーション出力回路、２０・・・制御回
路、２０−１・・・誤差増幅器、Ｌｌ−０〜Ｌ、 −ｎ
、Ｌ２−１〜Ｌ２−ｎ・・・チョークコイル、Ｔｒ・・
・ト’＞７ジスタ、Ｒ□〜Ｒ３，Ｒｄ−１〜Ｒｄ −ｎ
、、、抵抗、Ｔ−１−ランス、Ｄｔ Ｏ〜ｄ１
ｎ ＊ Ｄ２ ０〜Ｄ２−ｎ、Ｄ３・・・ダイオード、
Ｚ１〜Ｚｎ・・・ツェナダイオード、Ｃ−Ｏ〜Ｃ−ｎ・
・・コンデンサ。
」
□・□−一＋Figure 1 is a circuit diagram showing the configuration of a cross-regulation multi-output power supply that does not have an overvoltage prevention circuit, Figure 2 is a circuit diagram showing the configuration of a conventional overvoltage prevention circuit using dummy resistors, and Figure 3 4 is a circuit diagram showing the configuration of an overvoltage prevention circuit using a conventional choke coil, FIG. 4 is a circuit diagram showing the configuration of an embodiment of the overvoltage prevention circuit according to the present invention, and FIG. Main part circuit diagram for explaining operation, No. 6
The figure is a main circuit diagram showing the configuration of another embodiment of the overvoltage prevention circuit according to the present invention. 10-0... Stable output circuit, 10-1 to 10-n...
・Cross regulation output circuit, 20... Control circuit, 20-1... Error amplifier, Ll-0 to L, -n
, L2-1 to L2-n... choke coil, Tr...
・T'>7 registers, R□~R3, Rd-1~Rd-n
,,,resistance, T-1-lance, Dt O~d1
n*D20~D2-n, D3...diode,
Z1 ~ Zn... Zener diode, C-O ~ C-n.
...Capacitor. ” □・□−1+
Claims (1)
のスイッチングレギュレータであって、前記トランスの
２次の巻線には複数回路接続されており、そのうちの１
つ、の回路は帰還回路を介して１次側に帰還を施して安
定出力を得る安定出力回路、他の回路は前記トランス巻
線間の電磁結合により間接的に準安定化出力を得る準安
定化出力回路である所謂クロスレギユレーション方式の
多出力電源において、各巻線の負荷電流の組合せで前記
準安定化出力回路の出力電圧として発生する過電圧を、
前記帰還回路の入力端に入力し、前記準安定化出力回路
の出力電圧が一定電圧を起えない様にした事を特徴とす
る過電圧防止回路。A pulse width controlled switching regulator includes a transformer having primary and secondary windings, one of which is connected to the secondary winding of the transformer.
One circuit is a stable output circuit that provides a stable output by providing feedback to the primary side via a feedback circuit, and the other circuit is a quasi-stable output circuit that indirectly obtains a quasi-stable output through electromagnetic coupling between the transformer windings. In a so-called cross-regulation multi-output power supply that is a stabilized output circuit, the overvoltage generated as the output voltage of the quasi-stabilized output circuit due to the combination of the load currents of each winding is
An overvoltage prevention circuit, which is input to the input terminal of the feedback circuit, and is configured to prevent the output voltage of the quasi-stabilized output circuit from becoming a constant voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16887183U JPS6077288U (en) | 1983-10-31 | 1983-10-31 | Overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16887183U JPS6077288U (en) | 1983-10-31 | 1983-10-31 | Overvoltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6077288U true JPS6077288U (en) | 1985-05-30 |
Family
ID=30369070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16887183U Pending JPS6077288U (en) | 1983-10-31 | 1983-10-31 | Overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6077288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0416U (en) * | 1990-04-18 | 1992-01-06 | ||
| JP2000023369A (en) * | 1998-06-30 | 2000-01-21 | Matsushita Electric Works Ltd | Distributed power supply equipment |
| JP2016200959A (en) * | 2015-04-09 | 2016-12-01 | 日立オムロンターミナルソリューションズ株式会社 | Paper sheets handling device and consumer transaction facility |
-
1983
- 1983-10-31 JP JP16887183U patent/JPS6077288U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0416U (en) * | 1990-04-18 | 1992-01-06 | ||
| JP2000023369A (en) * | 1998-06-30 | 2000-01-21 | Matsushita Electric Works Ltd | Distributed power supply equipment |
| JP2016200959A (en) * | 2015-04-09 | 2016-12-01 | 日立オムロンターミナルソリューションズ株式会社 | Paper sheets handling device and consumer transaction facility |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3935526A (en) | DC-to-DC converter | |
| US4293902A (en) | Transformerless fast current limiter with symetry correction for a switched-mode power supply | |
| US5103386A (en) | Flyback converter with energy feedback circuit and demagnetization circuit | |
| JPH07118918B2 (en) | DC / DC power supply | |
| JPH0532987B2 (en) | ||
| US4456950A (en) | Current spike protection circuit for switch-mode power supplies | |
| JPS6077288U (en) | Overvoltage protection circuit | |
| GB2233479A (en) | Regulated DC-DC power supply | |
| JPS6216793Y2 (en) | ||
| JPH0644311Y2 (en) | Rectifier circuit including saturable reactor | |
| JP2617318B2 (en) | DC-DC converter | |
| JPS6227029Y2 (en) | ||
| JPH0237275Y2 (en) | ||
| JPS6219105Y2 (en) | ||
| JPS61185069A (en) | Dc/dc converter | |
| JPS60141689U (en) | Switching power supply with multiple outputs | |
| JPH01134990U (en) | ||
| JPH043590Y2 (en) | ||
| JPH0550233B2 (en) | ||
| JPS58197529A (en) | Low-voltage dummy current controlling circuit | |
| JPH0245433B2 (en) | DCCDCKONBAATANOJIKIANPUSEIGYOSOCHI | |
| JPS59189483U (en) | constant current circuit | |
| JPS60171081U (en) | Stabilized power supply circuit | |
| JPS5883129U (en) | Switching power supply transformer with current detection section | |
| JPH01164268A (en) | Switching power supply device |