JPH0425478U - - Google Patents
Info
- Publication number
- JPH0425478U JPH0425478U JP6446090U JP6446090U JPH0425478U JP H0425478 U JPH0425478 U JP H0425478U JP 6446090 U JP6446090 U JP 6446090U JP 6446090 U JP6446090 U JP 6446090U JP H0425478 U JPH0425478 U JP H0425478U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- output
- signal
- primary winding
- current
- 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
- 238000012544 monitoring process Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案のスイツチング電源回路を示す
図、第２図は本考案のスイツチング電源回路にお
けるタイムチヤート、第３図は従来のスイツチン
グ電源回路を示す図、第４図はトランスの巻線に
流れる電流の波形図、第５図はトランジスタの電
力損失を示す波形図である。
Ｃｐ……一次巻線、Ｃｓ……二次巻線、Ｑ１，
Ｑ２……トランジスタ、Ｑ１４……フオトカプラ
、Ｑ１４ａ……フオトトランジスタ、Ｔ１１……
トランス。
Fig. 1 is a diagram showing the switching power supply circuit of the present invention, Fig. 2 is a time chart in the switching power supply circuit of the present invention, Fig. 3 is a diagram showing a conventional switching power supply circuit, and Fig. 4 is a diagram showing the winding of the transformer. A waveform diagram of the flowing current, FIG. 5, is a waveform diagram showing the power loss of the transistor. Cp ...Primary winding, Cs ...Secondary winding, Q1,
Q2...Transistor, Q14...Photocoupler, Q14a...Phototransistor, T11...
Trance.
Claims (1)
力を取り出し、該出力の大小によつて入力電流を
制御して出力電流を制限するスイツチング電源回
路において、 (a) 上記一次巻線に接続されるとともに、信号
電流が流れることによつて導通する主スイツチン
グ素子と、 (b) 主スイツチング素子の信号電流供給側に配
設され、オン・オフして上記信号電流を供給・遮
断する副スイツチング素子と、 (c) 上記一次巻線を流れる電流を監視するとと
もに、出力信号によつて上記副スイツチング素子
のオン・オフを行う監視手段を有することを特徴
とするスイツチング電源回路。[Claims for Utility Model Registration] In a switching power supply circuit that inputs an input to the primary winding of a transformer and takes an output from the secondary winding, and controls the input current and limits the output current according to the magnitude of the output, ( a) A main switching element that is connected to the primary winding and conducts when a signal current flows; (b) A main switching element that is arranged on the signal current supply side of the main switching element and that turns on and off to conduct the above signal. (c) monitoring means for monitoring the current flowing through the primary winding and turning on and off the sub-switching element based on an output signal; Switching power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6446090U JPH0425478U (en) | 1990-06-20 | 1990-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6446090U JPH0425478U (en) | 1990-06-20 | 1990-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0425478U true JPH0425478U (en) | 1992-02-28 |
Family
ID=31595433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6446090U Pending JPH0425478U (en) | 1990-06-20 | 1990-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425478U (en) |
-
1990
- 1990-06-20 JP JP6446090U patent/JPH0425478U/ja active Pending
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