JPS62161592U - - Google Patents
Info
- Publication number
- JPS62161592U JPS62161592U JP5125586U JP5125586U JPS62161592U JP S62161592 U JPS62161592 U JP S62161592U JP 5125586 U JP5125586 U JP 5125586U JP 5125586 U JP5125586 U JP 5125586U JP S62161592 U JPS62161592 U JP S62161592U
- Authority
- JP
- Japan
- Prior art keywords
- primary
- winding
- positive feedback
- switching transistor
- self
- 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 8
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000009499 grossing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は本考案の一実施例に係る自励式スイツ
チング電源の回路構成図、第２図は従来例の回路
構成図である。
Ｔ１…発振トランス、Ｌ１…１次巻線、Ｌ２…
１次正帰還ベース巻線、ＴＲ１…スイツチングト
ランジスタ、１１…制御回路、Ｄ３…整流ダイオ
ード、Ｃ３…平滑コンデンサ、Ｒ１…起動抵抗。
FIG. 1 is a circuit diagram of a self-excited switching power supply according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. T1...Oscillation transformer, L1...Primary winding, L2...
Primary positive feedback base winding, TR1... switching transistor, 11... control circuit, D3... rectifier diode, C3... smoothing capacitor, R1... starting resistor.
Claims (1)
ランスと、前記１次巻線に接続されて前記１次巻
線に流れる電流を断続するスイツチングトランジ
スタと、前記スイツチングトランジスタのスイツ
チング動作を制御する制御回路とを備え、前記発
振トランスには１次正帰還ベース巻線が設けられ
ており、この１次正帰還ベース巻線に誘起された
電圧が前記スイツチングトランジスタのベースに
正帰還されることによつて、前記スイツチングト
ランジスタが自励発振する自励式スイツチング電
源において、 前記発振トランスの１次正帰還ベース巻線に誘
起された電圧を整流平滑して、これを前記制御回
路に駆動電圧として与える整流平滑回路を形成し
たことを特徴とする自励式スイツチング電源。[Claims for Utility Model Registration] An oscillating transformer in which an unstable DC voltage is applied to a primary winding; a switching transistor connected to the primary winding to intermittent a current flowing through the primary winding; The oscillation transformer includes a control circuit that controls the switching operation of the switching transistor, and the oscillation transformer is provided with a primary positive feedback base winding, and the voltage induced in the primary positive feedback base winding is applied to the switching transistor. In a self-excited switching power supply in which the switching transistor self-oscillates by positive feedback to the base of the transistor, the voltage induced in the primary positive feedback base winding of the oscillation transformer is rectified and smoothed, A self-excited switching power supply characterized in that a rectifying and smoothing circuit is formed to supply this as a driving voltage to the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5125586U JPS62161592U (en) | 1986-04-04 | 1986-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5125586U JPS62161592U (en) | 1986-04-04 | 1986-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62161592U true JPS62161592U (en) | 1987-10-14 |
Family
ID=30875345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5125586U Pending JPS62161592U (en) | 1986-04-04 | 1986-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62161592U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562791B2 (en) * | 1973-12-27 | 1981-01-21 | ||
| JPS5625384A (en) * | 1979-08-09 | 1981-03-11 | Toshiba Corp | Self-excited converter |
-
1986
- 1986-04-04 JP JP5125586U patent/JPS62161592U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562791B2 (en) * | 1973-12-27 | 1981-01-21 | ||
| JPS5625384A (en) * | 1979-08-09 | 1981-03-11 | Toshiba Corp | Self-excited converter |