JPS63690U - - Google Patents
Info
- Publication number
- JPS63690U JPS63690U JP9481886U JP9481886U JPS63690U JP S63690 U JPS63690 U JP S63690U JP 9481886 U JP9481886 U JP 9481886U JP 9481886 U JP9481886 U JP 9481886U JP S63690 U JPS63690 U JP S63690U
- Authority
- JP
- Japan
- Prior art keywords
- input
- emitter
- transistor
- base
- 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.)
- Granted
Links
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の電源回路の一実施例を示す回
路図、第２図は従来のスイツチング制御型電源回
路を示す回路図、第３図はその各部の電圧、電流
波形図である。
Ｔ……コンバータトランス、Ｎ２……帰還巻線
、Ｑ１……スイツチングトランジスタ、Ｑ２……
制御トランジスタ、Ｒ１３，Ｒ１４……抵抗、Ｐ
Ｃ……スイツチ素子としてのフオトカツプラ。
FIG. 1 is a circuit diagram showing an embodiment of the power supply circuit of the present invention, FIG. 2 is a circuit diagram showing a conventional switching control type power supply circuit, and FIG. 3 is a voltage and current waveform diagram of each part thereof. T...Converter transformer, N2...Feedback winding, Q1...Switching transistor, Q2...
Control transistor, R13, R14...resistance, P
C... Photo cutter as a switch element.
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し、このトランジスタのベー
ス・エミツタ間に前記トランスの帰還巻線を接続
してブロツキング発振回路を構成すると共に、前
記帰還巻線からの正帰還電流を前記トランスから
得る直流電圧の変動に応じて制御することにより
、前記スイツチングトランジスタのターンオフタ
イミングを可変するようにした電源回路に於いて
、 前記スイツチングトランジスタのベース・エミ
ツタ間に接続され前記正帰還電流をバイパスする
制御トランジスタのベースと前記直流入力の一方
のラインとの間に複数個の抵抗を直列に接続し、
その抵抗間の一つの接続中点と前記直流入力の他
方のラインとの間に電源オン・オフ用のスイツチ
素子を接続してなるスイツチング制御型電源回路
。[Claims for Utility Model Registration] For DC input, the input winding of a converter transformer and the collector-emitter of a switching transistor are connected in series, and the feedback winding of the transformer is connected between the base-emitter of this transistor. a blocking oscillator circuit by controlling the positive feedback current from the feedback winding according to fluctuations in the DC voltage obtained from the transformer, thereby varying the turn-off timing of the switching transistor. In the circuit, a plurality of resistors are connected in series between the base of a control transistor connected between the base and emitter of the switching transistor and bypassing the positive feedback current and one line of the DC input,
A switching control type power supply circuit comprising a power on/off switch element connected between one connection midpoint between the resistors and the other line of the DC input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986094818U JPH0545118Y2 (en) | 1986-06-20 | 1986-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986094818U JPH0545118Y2 (en) | 1986-06-20 | 1986-06-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63690U true JPS63690U (en) | 1988-01-06 |
| JPH0545118Y2 JPH0545118Y2 (en) | 1993-11-17 |
Family
ID=30958662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986094818U Expired - Lifetime JPH0545118Y2 (en) | 1986-06-20 | 1986-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0545118Y2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625377A (en) * | 1979-08-09 | 1981-03-11 | Toshiba Corp | On-off circuit for forward converter |
| JPS6127492U (en) * | 1984-07-25 | 1986-02-19 | 株式会社日立製作所 | Overvoltage protection circuit |
| JPS6146177A (en) * | 1984-08-07 | 1986-03-06 | Sanyo Electric Co Ltd | Switching control type power source circuit |
| JPS6173573A (en) * | 1984-09-17 | 1986-04-15 | Tohoku Metal Ind Ltd | Protective circuit for dc/dc converter |
| JPS61223470A (en) * | 1986-03-20 | 1986-10-04 | 三洋電機株式会社 | Methdo of controlling refrigerator |
-
1986
- 1986-06-20 JP JP1986094818U patent/JPH0545118Y2/ja not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625377A (en) * | 1979-08-09 | 1981-03-11 | Toshiba Corp | On-off circuit for forward converter |
| JPS6127492U (en) * | 1984-07-25 | 1986-02-19 | 株式会社日立製作所 | Overvoltage protection circuit |
| JPS6146177A (en) * | 1984-08-07 | 1986-03-06 | Sanyo Electric Co Ltd | Switching control type power source circuit |
| JPS6173573A (en) * | 1984-09-17 | 1986-04-15 | Tohoku Metal Ind Ltd | Protective circuit for dc/dc converter |
| JPS61223470A (en) * | 1986-03-20 | 1986-10-04 | 三洋電機株式会社 | Methdo of controlling refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0545118Y2 (en) | 1993-11-17 |