JPS6170217U - - Google Patents
Info
- Publication number
- JPS6170217U JPS6170217U JP15602284U JP15602284U JPS6170217U JP S6170217 U JPS6170217 U JP S6170217U JP 15602284 U JP15602284 U JP 15602284U JP 15602284 U JP15602284 U JP 15602284U JP S6170217 U JPS6170217 U JP S6170217U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- collector
- transistors
- current
- constant current
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Control Of Electrical Variables (AREA)
Description
第１図は、本考案の一実施例を示す回路図、第
２図は従来の定電流回路を示す回路図、及び第３
図は本考案の説明に供する為の特性図である。
主な図番の説明、７，８，１２，１３…第１、
第２、第３、第４トランジスタ、９，１０…第１
、第２シヨツトキーダイオード、１１，１４…抵
抗、１５…電流ミラー回路、１９…定電流トラン
ジスタ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing a conventional constant current circuit, and FIG.
The figure is a characteristic diagram for explaining the present invention. Explanation of main drawing numbers, 7, 8, 12, 13...1st,
2nd, 3rd, 4th transistor, 9, 10...1st
, second shot key diode, 11, 14...resistor, 15 ...current mirror circuit, 19...constant current transistor.
Claims (1)
第２トランジスタと、該第１及び第２トランジス
タの共通エミツタと電源との間に接続された抵抗
と、前記第１及び第２トランジスタの共通ベース
と電源との間に接続されたシヨツトキーダイオー
ドと、前記第１トランジスタのコレクタに接続さ
れたダイオード接続型の第３トランジスタと、該
第３トランジスタのコレクタ・エミツタ間に並列
接続された抵抗と、前記第３トランジスタとミラ
ー関係に接続されるとともに、コレクタが前記第
２トランジスタのコレクタに接続された第４トラ
ンジスタと、前記第２及び第４トランジスタのコ
レクタ電流の差電流を取り出す電流ミラー回路と
、該電流ミラー回路を構成するトランジスタとベ
ース及びエミツタが共通接続され、コレクタが前
記第１及び第２トランジスタの共通ベースに接続
された定電流トランジスタから成り、前記電流ミ
ラー回路の出力端に定電流を発生する様にした定
電流回路。 first and second transistors whose bases and emitters are commonly connected; a resistor connected between the common emitters of the first and second transistors and a power source; and a common base and the power source of the first and second transistors. a Schottky diode connected between the first transistor, a diode-connected third transistor connected to the collector of the first transistor, and a resistor connected in parallel between the collector and emitter of the third transistor; a fourth transistor connected in a mirror relationship to a third transistor and having a collector connected to the collector of the second transistor; a current mirror circuit for extracting a difference current between the collector currents of the second and fourth transistors; A transistor forming a current mirror circuit includes a constant current transistor whose base and emitter are commonly connected, and whose collector is connected to the common base of the first and second transistors, and generates a constant current at the output terminal of the current mirror circuit. A constant current circuit designed to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15602284U JPH0512812Y2 (en) | 1984-10-16 | 1984-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15602284U JPH0512812Y2 (en) | 1984-10-16 | 1984-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6170217U true JPS6170217U (en) | 1986-05-14 |
| JPH0512812Y2 JPH0512812Y2 (en) | 1993-04-05 |
Family
ID=30714037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15602284U Expired - Lifetime JPH0512812Y2 (en) | 1984-10-16 | 1984-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512812Y2 (en) |
-
1984
- 1984-10-16 JP JP15602284U patent/JPH0512812Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512812Y2 (en) | 1993-04-05 |