JPH0378311U - - Google Patents
Info
- Publication number
- JPH0378311U JPH0378311U JP13871689U JP13871689U JPH0378311U JP H0378311 U JPH0378311 U JP H0378311U JP 13871689 U JP13871689 U JP 13871689U JP 13871689 U JP13871689 U JP 13871689U JP H0378311 U JPH0378311 U JP H0378311U
- Authority
- JP
- Japan
- Prior art keywords
- drive stage
- output
- differential amplifier
- constant voltage
- transistor
- 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 3
Description
第１図は本考案の一実施例の回路図、第２図は
本考案の他の実施例の回路図、第３図は従来の一
例の回路図である。
１…入力端子、２…出力端子、３…差動アンプ
、４…ツエナーダイオード、１０，１０′…ドラ
イブ段、Ｘ…出力トランジスタ、Ｑ１〜Ｑ３，Ｑ
１′〜Ｑ３′…制御トランジスタ、Ｒ１〜Ｒ２，
Ｒ１′〜Ｒ２′…抵抗。
FIG. 1 is a circuit diagram of one embodiment of the present invention, FIG. 2 is a circuit diagram of another embodiment of the present invention, and FIG. 3 is a circuit diagram of a conventional example. 1... Input terminal, 2... Output terminal, 3... Differential amplifier, 4... Zener diode, 10, 10'... Drive stage, X... Output transistor, Q 1 to Q 3 , Q
1 ′ to Q 3 ′...control transistor, R 1 to R 2 ,
R1 ' to R2 '...Resistance.
Claims (1)
動アンプの出力端子にダーリントン接続されたＮ
個の制御トランジスタにて構成されるドライブ段
を接続し、上記差動アンプの出力にて該ドライブ
段を駆動し該ドライブ段の出力端子にベースを接
続された出力トランジスタを制御して定電圧を得
る構成の直流定電圧回路において、 上記ドライブ段の制御トランジスタがＮＰＮ形
にあつては、上記差動アンプの出力側に近い（Ｎ
−１）個の制御トランジスタの少なくとも１つの
制御トランジスタのエミツタとアース端子との間
に抵抗を接続し、 上記ドライブ段の制御トランジスタがＰＮＰ形
にあつては、上記差動アンプの出力側に近い（Ｎ
−１）個の制御トランジスタの少なくとも１つの
制御トランジスタのエミツタと上記出力トランジ
スタのベースとの間に抵抗を接続してなる直流定
電圧回路。[Claims for Utility Model Registration] A Darlington-connected N
A drive stage consisting of control transistors is connected, and the output of the differential amplifier drives the drive stage, and the output transistor whose base is connected to the output terminal of the drive stage is controlled to maintain a constant voltage. In the DC constant voltage circuit configured to obtain the above, if the control transistor of the drive stage is an NPN type, it is close to the output side of the differential amplifier (N
-1) A resistor is connected between the emitter of at least one of the control transistors and the ground terminal, and if the control transistor of the drive stage is of PNP type, it is close to the output side of the differential amplifier. (N
-1) A DC constant voltage circuit comprising a resistor connected between the emitter of at least one of the control transistors and the base of the output transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13871689U JPH0378311U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13871689U JPH0378311U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0378311U true JPH0378311U (en) | 1991-08-08 |
Family
ID=31685797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13871689U Pending JPH0378311U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0378311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000066745A (en) * | 1998-08-26 | 2000-03-03 | New Japan Radio Co Ltd | Constant voltage regulator circuit |
-
1989
- 1989-11-30 JP JP13871689U patent/JPH0378311U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000066745A (en) * | 1998-08-26 | 2000-03-03 | New Japan Radio Co Ltd | Constant voltage regulator circuit |
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