JPS61107019U - - Google Patents
Info
- Publication number
- JPS61107019U JPS61107019U JP19234484U JP19234484U JPS61107019U JP S61107019 U JPS61107019 U JP S61107019U JP 19234484 U JP19234484 U JP 19234484U JP 19234484 U JP19234484 U JP 19234484U JP S61107019 U JPS61107019 U JP S61107019U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- base
- resistor
- emitter
- forming
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Description
第１図は、本考案の一実施例を示す回路構成図
、第２図は、従来の過電流保護回路を有する安定
化電源回路を示す図である。
１……誤差増副器、２……基準電圧、３，４…
…制御用トランジスタ、７……電流検知用抵抗、
８，９……出力電圧設定用抵抗、１０，１１，１
２……保護回路用トランジスタ、１３……入力端
子、１４……出力端子、１５……接地端子。
FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a stabilized power supply circuit having a conventional overcurrent protection circuit. 1...Error amplifier, 2...Reference voltage, 3, 4...
...control transistor, 7...current detection resistor,
8, 9...Resistance for output voltage setting, 10, 11, 1
2...Transistor for protection circuit, 13...Input terminal, 14...Output terminal, 15...Ground terminal.
Claims (1)
差増幅器の出力によつてそのベース側が制御され
る制御用トランジスタとを含む安定化電源回路に
おいて、ＰＮＰトランジスタのベースがＮＰＮト
ランジスタのコレクタに接続され、前記ＰＮＰト
ランジスタのコレクタが前記ＮＰＮトランジスタ
のベースに接続されてなる等価サイリスタのアノ
ードをなす前記ＰＮＰトランジスタのエミツタが
前記制御用トランジスタのベースに接続され、前
記等価サイリスタのカソードをなす前記ＮＰＮト
ランジスタのエミツタが出力端子に接続され、前
記等価サイリスタのゲートをなす前記ＮＰＮトラ
ンジスタのベースが、第１、第２の抵抗の接続点
に接続され、前記第２抵抗が該制御用トランジス
タのエミツタと第３抵抗との接続点に接続され、
前記第３抵抗の他の一端が出力端子に接続された
ことを特徴とする改良された保護回路を備えた安
定化電源回路。 In a stabilized power supply circuit including an output voltage, a reference voltage, an error amplifier, and a control transistor whose base side is controlled by the output of the error amplifier, the base of the PNP transistor is connected to the collector of the NPN transistor. , the collector of the PNP transistor is connected to the base of the NPN transistor, forming an anode of the equivalent thyristor; the emitter of the PNP transistor is connected to the base of the control transistor, forming the cathode of the equivalent thyristor; The emitter is connected to the output terminal, the base of the NPN transistor forming the gate of the equivalent thyristor is connected to the connection point of the first and second resistors, and the second resistor is connected to the emitter of the control transistor and the third resistor. connected to the connection point with the resistor,
A stabilized power supply circuit equipped with an improved protection circuit, characterized in that the other end of the third resistor is connected to an output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19234484U JPS61107019U (en) | 1984-12-19 | 1984-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19234484U JPS61107019U (en) | 1984-12-19 | 1984-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61107019U true JPS61107019U (en) | 1986-07-07 |
Family
ID=30749766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19234484U Pending JPS61107019U (en) | 1984-12-19 | 1984-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61107019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63135408U (en) * | 1987-02-25 | 1988-09-06 |
-
1984
- 1984-12-19 JP JP19234484U patent/JPS61107019U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63135408U (en) * | 1987-02-25 | 1988-09-06 |
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