JPH0314981U - - Google Patents
Info
- Publication number
- JPH0314981U JPH0314981U JP7280689U JP7280689U JPH0314981U JP H0314981 U JPH0314981 U JP H0314981U JP 7280689 U JP7280689 U JP 7280689U JP 7280689 U JP7280689 U JP 7280689U JP H0314981 U JPH0314981 U JP H0314981U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switching element
- saturable
- output
- saturable reactor
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案によるスイツチングレギユレー
タの過電流保護回路の一実施例を示す結線図、第
２図は２つの可飽和リアクトル１６，１７の飽和
特性を示すグラフ、第３図は従来のスイツチング
レギユレータの過電流保護回路の一例を示す結線
図である。
１……直流電源、２……変圧器、４……主電流
回路、５……制御回路、９，９ａ……過電流検出
回路、１１，１２……ダイオード、１６，１７…
…可飽和リアクトル。
Fig. 1 is a wiring diagram showing an embodiment of the overcurrent protection circuit of a switching regulator according to the present invention, Fig. 2 is a graph showing the saturation characteristics of two saturable reactors 16 and 17, and Fig. 3 is a conventional one. FIG. 3 is a wiring diagram showing an example of an overcurrent protection circuit of the switching regulator of FIG. 1... DC power supply, 2... Transformer, 4... Main current circuit, 5... Control circuit, 9, 9a... Overcurrent detection circuit, 11, 12... Diode, 16, 17...
...Saturable reactor.
Claims (1)
ツチング素子を直列に接続した主電流回路と、前
記変圧器に巻かれた出力コイルと、前記スイツチ
ング素子のベース電流を制御し出力電圧を所定値
に保つ制御回路と、前記出力コイルに接続された
整流回路と、この整流回路に接続され飽和特性の
異なる複数の可飽和リアクトルと、この可飽和リ
アクトルに接続された出力コンデンサと、前記可
飽和リアクトルのうちの１個の電流を検出する過
電流検出回路を備え、前記可飽和リアクトルの両
端の電圧が所定値以下に低下すると前記スイツチ
ング素子のベース電流を遮断することを特徴とす
るスイツチングレギユレータの過電流保護回路。 A main current circuit connected to a DC power source and connected in series with a transformer's primary coil and a switching element, an output coil wound around the transformer, and a base current of the switching element are controlled to maintain the output voltage at a predetermined value. A control circuit, a rectifier circuit connected to the output coil, a plurality of saturable reactors connected to the rectifier circuit and having different saturation characteristics, an output capacitor connected to the saturable reactor, and one of the saturable reactors. A switching regulator, comprising an overcurrent detection circuit for detecting one current of the saturable reactor, and cuts off the base current of the switching element when the voltage across the saturable reactor falls below a predetermined value. Overcurrent protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7280689U JPH0314981U (en) | 1989-06-21 | 1989-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7280689U JPH0314981U (en) | 1989-06-21 | 1989-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0314981U true JPH0314981U (en) | 1991-02-14 |
Family
ID=31611071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7280689U Pending JPH0314981U (en) | 1989-06-21 | 1989-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314981U (en) |
-
1989
- 1989-06-21 JP JP7280689U patent/JPH0314981U/ja active Pending