JPH0171988U - - Google Patents
Info
- Publication number
- JPH0171988U JPH0171988U JP1987166771U JP16677187U JPH0171988U JP H0171988 U JPH0171988 U JP H0171988U JP 1987166771 U JP1987166771 U JP 1987166771U JP 16677187 U JP16677187 U JP 16677187U JP H0171988 U JPH0171988 U JP H0171988U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- transformer
- power supply
- secondary winding
- switching
- 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 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Control Of Electrical Variables (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は従来例の回路図である。
１……直流電源、２……変圧器、３……スイツ
チングトランジスタ、５……磁気増幅器、６，７
，１１，２２……ダイオード、９，２３……コン
デンサ、１３，１８……トランジスタ、２１……
３次巻線。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. 1...DC power supply, 2...Transformer, 3...Switching transistor, 5...Magnetic amplifier, 6,7
, 11, 22... Diode, 9, 23... Capacitor, 13, 18... Transistor, 21...
Tertiary winding.
Claims (1)
対しスイツチングトランジスタのオフ期間にリセ
ツト電流を通ずる第１のトランジスタと、出力電
流が過大になつたとき前記第１のトランジスタを
導通状態とする第２のトランジスタとを有するス
イツチング電源において、前記変圧器に設けた３
次巻線と、該３次巻線の出力を整流し前記第１の
トランジスタへ電源として供給する整流器とを備
えたことを特徴とするスイツチング電源の過電流
垂下回路。 A first transistor that conducts a reset current during the off period of the switching transistor to a magnetic amplifier inserted into the secondary winding side of the transformer, and a conductive state of the first transistor when the output current becomes excessive. In the switching power supply having a second transistor provided in the transformer,
1. An overcurrent droop circuit for a switching power supply, comprising: a secondary winding; and a rectifier that rectifies the output of the tertiary winding and supplies it to the first transistor as a power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166771U JPH0171988U (en) | 1987-11-02 | 1987-11-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166771U JPH0171988U (en) | 1987-11-02 | 1987-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171988U true JPH0171988U (en) | 1989-05-15 |
Family
ID=31454452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987166771U Pending JPH0171988U (en) | 1987-11-02 | 1987-11-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171988U (en) |
-
1987
- 1987-11-02 JP JP1987166771U patent/JPH0171988U/ja active Pending