JPS6244637U - - Google Patents
Info
- Publication number
- JPS6244637U JPS6244637U JP13406585U JP13406585U JPS6244637U JP S6244637 U JPS6244637 U JP S6244637U JP 13406585 U JP13406585 U JP 13406585U JP 13406585 U JP13406585 U JP 13406585U JP S6244637 U JPS6244637 U JP S6244637U
- Authority
- JP
- Japan
- Prior art keywords
- input terminal
- switching regulator
- transistor
- voltage source
- resistor
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の電源回路の保護装置を示す回
路図、第２図は従来の電源回路の保護装置を示す
回路図である。
Ｅｉ……非安定入力直流電圧、Ｅｏ……出力直
流電圧、１２……半導体制御整流素子、１３……
電流制限回路、２０……スイツチングレギユレー
タ、２２……制御回路、Ｑ１……トランジスタ、
Ｑ２……スイツチング素子、Ｔ１……コンバータ
トランス（インダクタンス素子）、Ｃ１，Ｃ２…
…コンデンサ、Ｄ３……ダイオード。
FIG. 1 is a circuit diagram showing a power supply circuit protection device of the present invention, and FIG. 2 is a circuit diagram showing a conventional power supply circuit protection device. Ei... Unstable input DC voltage, Eo... Output DC voltage, 12... Semiconductor controlled rectifier, 13...
Current limiting circuit, 20...Switching regulator, 22...Control circuit, Q1 ...Transistor,
Q 2 ... switching element, T 1 ... converter transformer (inductance element), C 1 , C 2 ...
...Capacitor, D3 ...Diode.
Claims (1)
素子との直列回路を接続し、かつ上記スイツチン
グ素子のオン・オフ状態を制御する手段を有する
スイツチングレギユレータと、 直流電圧源と前記スイツチングレギユレータの
入力端子との間にコレクタ・エミツタ路を接続し
たトランジスタと、 このトランジスタのベースと前記直流電圧源と
の間に接続された第１の抵抗と、 前記トランジスタのエミツタ電流を検出すべく
エミツタに直列に接続された第２の抵抗と、 この第２の抵抗の両端電圧が所定値を超えたと
きに導通して前記トランジスタのベース電流を側
路するように接続された半導体制御整流素子と、 前記スイツチングレギユレータの入力端子と接
地間に接続されたコンデンサと、 前記スイツチングレギユレータにおける前記イ
ンダクタンス素子の入力端子側の一端と接地間に
、前記直流電圧源からみて逆極性となるように接
続されたダイオードとを具備して成る電源回路の
保護装置。[Claims for Utility Model Registration] A switching regulator having an input terminal connected to a series circuit of an inductance element and a switching element, and having means for controlling the on/off state of the switching element, and a DC voltage source. a transistor having a collector-emitter path connected to the input terminal of the switching regulator; a first resistor connected between the base of the transistor and the DC voltage source; and an emitter current of the transistor. a second resistor connected in series to the emitter to detect the second resistor; a semiconductor-controlled rectifier; a capacitor connected between the input terminal of the switching regulator and ground; and the DC voltage source connected between one end of the input terminal of the inductance element in the switching regulator and ground. A power supply circuit protection device comprising a diode connected so as to have opposite polarity when viewed from the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13406585U JPS6244637U (en) | 1985-09-03 | 1985-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13406585U JPS6244637U (en) | 1985-09-03 | 1985-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6244637U true JPS6244637U (en) | 1987-03-18 |
Family
ID=31034956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13406585U Pending JPS6244637U (en) | 1985-09-03 | 1985-09-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6244637U (en) |
-
1985
- 1985-09-03 JP JP13406585U patent/JPS6244637U/ja active Pending
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