JPH031684U - - Google Patents
Info
- Publication number
- JPH031684U JPH031684U JP5889789U JP5889789U JPH031684U JP H031684 U JPH031684 U JP H031684U JP 5889789 U JP5889789 U JP 5889789U JP 5889789 U JP5889789 U JP 5889789U JP H031684 U JPH031684 U JP H031684U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- transformer
- detection
- voltage
- 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 4
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims 3
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 230000001681 protective effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Description
第１図はこの考案に係る出力電圧保護回路を備
えたスイツチング電源の回路図、第２図は従来の
出力電圧保護回路を備えたスイツチング電源の回
路図である。
１…トランス、２…スイツチング・トランジス
タ、３…制御回路、４…検出回路、５…安定化回
路、６…コンデンサ、７…電源スイツチ。
FIG. 1 is a circuit diagram of a switching power supply equipped with an output voltage protection circuit according to the present invention, and FIG. 2 is a circuit diagram of a switching power supply equipped with a conventional output voltage protection circuit. DESCRIPTION OF SYMBOLS 1...Transformer, 2...Switching transistor, 3...Control circuit, 4...Detection circuit, 5...Stabilization circuit, 6...Capacitor, 7...Power switch.
Claims (1)
ンスの１次巻線の一端に接続したスイツチング・
トランジスタを備え、前記トランスの２次側には
整流回路および出力電圧平滑回路より成る複数個
の高電圧出力回路と、整流回路および出力電圧平
滑回路、並びに、前記出力電圧平滑回路の出力側
に設けられた安定化回路とコンデンサから成る複
数個の低電圧出力回路によつて構成された多出力
回路を有するスイツチング電源において、 任意の１つの低電圧出力回路における前記安定
化回路の入力側に検出回路を並列接続し、前記検
出回路の検出出力により制御回路を介して前記ト
ランスの１次側に接続されたスイツチング・トラ
ンジスタを制御し、保護動作を行うことを特徴と
するスイツチング電源の出力電圧保護回路。[Claims for Utility Model Registration] The primary side of the transformer includes a switching device whose collector terminal is connected to one end of the primary winding of the transformer.
a plurality of high voltage output circuits each including a rectifier circuit and an output voltage smoothing circuit on the secondary side of the transformer; and a rectifier circuit and an output voltage smoothing circuit provided on the output side of the output voltage smoothing circuit; In a switching power supply having a multi-output circuit constituted by a plurality of low-voltage output circuits each consisting of a stabilizing circuit and a capacitor, a detection circuit is provided on the input side of the stabilizing circuit in any one low-voltage output circuit. are connected in parallel, and a switching transistor connected to the primary side of the transformer is controlled via a control circuit by the detection output of the detection circuit to perform a protective operation. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5889789U JPH031684U (en) | 1989-05-22 | 1989-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5889789U JPH031684U (en) | 1989-05-22 | 1989-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031684U true JPH031684U (en) | 1991-01-09 |
Family
ID=31584922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5889789U Pending JPH031684U (en) | 1989-05-22 | 1989-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031684U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4986223U (en) * | 1972-11-06 | 1974-07-25 | ||
| JPS6258548U (en) * | 1985-10-01 | 1987-04-11 | ||
| US6583894B1 (en) | 1998-09-09 | 2003-06-24 | Brother Kogyo Kabushiki Kaisha | Power supply device and method utilizable in electronic apparatus |
-
1989
- 1989-05-22 JP JP5889789U patent/JPH031684U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4986223U (en) * | 1972-11-06 | 1974-07-25 | ||
| JPS6258548U (en) * | 1985-10-01 | 1987-04-11 | ||
| US6583894B1 (en) | 1998-09-09 | 2003-06-24 | Brother Kogyo Kabushiki Kaisha | Power supply device and method utilizable in electronic apparatus |
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