JPH0214292U - - Google Patents
Info
- Publication number
- JPH0214292U JPH0214292U JP9264188U JP9264188U JPH0214292U JP H0214292 U JPH0214292 U JP H0214292U JP 9264188 U JP9264188 U JP 9264188U JP 9264188 U JP9264188 U JP 9264188U JP H0214292 U JPH0214292 U JP H0214292U
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- switching
- winding
- power supply
- supply device
- 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 7
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案に係るスイツチング電源装置
の一例を示す電気回路図、第２図は従来のスイツ
チング電源装置の構成を示す電気回路図である。
５……ＤＣ―ＤＣコンバータ、６……トランス
、６ａ……１次巻線、６ｂ……２次巻線、６ｃ…
…帰還巻線、７……スイツチングトランジスタ、
８……起動用抵抗体、１６……スイツチ回路、１
７……電圧検出回路。
FIG. 1 is an electric circuit diagram showing an example of a switching power supply device according to this invention, and FIG. 2 is an electric circuit diagram showing the configuration of a conventional switching power supply device. 5...DC-DC converter, 6...Transformer, 6a...Primary winding, 6b...Secondary winding, 6c...
...Feedback winding, 7...Switching transistor,
8... Starting resistor, 16... Switch circuit, 1
7...Voltage detection circuit.
Claims (1)
ツチング動作の繰り返しで交流化してトランスの
１次巻線に印加するとともに、該トランスの２次
巻線に生起された交流電圧を整流・平滑して直流
出力電圧として出力するＤＣ―ＤＣコンバータを
備えたスイツチング電源装置において、上記スイ
ツチングトランジスタの起動用抵抗体と該トラン
ジスタのベースとの間にスイツチ回路を介挿し、
上記トランスの帰還巻線の所定電圧を検出して上
記スイツチ回路をＯＦＦさせる電圧検出回路を上
記帰還巻線に並列接続したことを特徴とするスイ
ツチング電源装置。 The DC input is converted into AC by repeating the switching operation of the switching transistor and applied to the primary winding of the transformer, and the AC voltage generated in the secondary winding of the transformer is rectified and smoothed as a DC output voltage. In a switching power supply device equipped with a DC-DC converter that outputs, a switch circuit is inserted between the starting resistor of the switching transistor and the base of the transistor,
A switching power supply device characterized in that a voltage detection circuit that detects a predetermined voltage of a feedback winding of the transformer and turns off the switch circuit is connected in parallel to the feedback winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9264188U JPH0214292U (en) | 1988-07-12 | 1988-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9264188U JPH0214292U (en) | 1988-07-12 | 1988-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214292U true JPH0214292U (en) | 1990-01-29 |
Family
ID=31317078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9264188U Pending JPH0214292U (en) | 1988-07-12 | 1988-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214292U (en) |
-
1988
- 1988-07-12 JP JP9264188U patent/JPH0214292U/ja active Pending