JPS6356416U - - Google Patents
Info
- Publication number
- JPS6356416U JPS6356416U JP15115086U JP15115086U JPS6356416U JP S6356416 U JPS6356416 U JP S6356416U JP 15115086 U JP15115086 U JP 15115086U JP 15115086 U JP15115086 U JP 15115086U JP S6356416 U JPS6356416 U JP S6356416U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- transistor
- constant current
- current circuit
- diode
- 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
Landscapes
- Amplifiers (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
図は従来例を示す回路図である。
１，３……ＰＮＰトランジスタ、２……負荷、
４，５，６……抵抗器、７−１〜７−ｎ……ダイ
オード。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional example. 1, 3...PNP transistor, 2...Load,
4, 5, 6...Resistor, 7-1 to 7 - n...Diode.
Claims (1)
タに直流電源電圧を供給する第１の抵抗器と、上
記トランジスタのベースと上記直流電源との間に
接続された第２の抵抗器と、上記トランジスタの
ベースと基準電位点との間に接続された第３の抵
抗器とを有するものにおいて、上記第２の抵抗器
に直列に複数のダイオードを順方向接続し、上記
トランジスタのコレクタから出力電流を得ること
を特徴とする定電流回路。 (2) 上記第２の抵抗器の値をＲ２とし、上記第
３の抵抗器の値をＲ３とし、上記ダイオードの数
をｎとして、ｎＲ３Ｒ２＋Ｒ３＝１としたことを
特徴とする実用新案登録請求の範囲第１項記載の
定電流回路。 (3) 上記ダイオードがトランジスタのダイオー
ド接続回路からなることを特徴とする実用新案登
録請求の範囲第１項及び第２項記載の定電流回路
。[Claims for Utility Model Registration] (1) A transistor, a first resistor that supplies a DC power supply voltage to the emitter of the transistor, and a second resistor connected between the base of the transistor and the DC power supply; A resistor and a third resistor connected between the base of the transistor and a reference potential point, wherein a plurality of diodes are forwardly connected in series with the second resistor, and the transistor A constant current circuit characterized by obtaining an output current from a collector. (2) The value of the second resistor is R 2 , the value of the third resistor is R 3 , the number of diodes is n, and nR 3 R 2 + R 3 = 1. A constant current circuit according to claim 1 of the utility model registration claim. (3) The constant current circuit according to claims 1 and 2, wherein the diode is a diode-connected circuit of transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15115086U JPS6356416U (en) | 1986-10-01 | 1986-10-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15115086U JPS6356416U (en) | 1986-10-01 | 1986-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6356416U true JPS6356416U (en) | 1988-04-15 |
Family
ID=31067957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15115086U Pending JPS6356416U (en) | 1986-10-01 | 1986-10-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6356416U (en) |
-
1986
- 1986-10-01 JP JP15115086U patent/JPS6356416U/ja active Pending
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