JPS6232410U - - Google Patents
Info
- Publication number
- JPS6232410U JPS6232410U JP12127785U JP12127785U JPS6232410U JP S6232410 U JPS6232410 U JP S6232410U JP 12127785 U JP12127785 U JP 12127785U JP 12127785 U JP12127785 U JP 12127785U JP S6232410 U JPS6232410 U JP S6232410U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- current
- control element
- voltage
- operational amplifier
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Voltage And Current In General (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案による定電流出力回路の一実施
例を示す回路図、第２図は本実施例の入力電圧と
出力電流の特性を示すグラフ、第３図は縦来の定
電流出力回路の一例を示す回路図、第４図は従来
の定電流回路の電圧入力と出力電流の関係を示す
グラフである。
１，７……演算増幅器、２……トランジスタ、
３……負荷、４……電圧帰還回路、８，９……直
流電源、Ｒ１〜Ｒ９……抵抗。
Fig. 1 is a circuit diagram showing an embodiment of the constant current output circuit according to the present invention, Fig. 2 is a graph showing the characteristics of input voltage and output current of this embodiment, and Fig. 3 is a vertical constant current output circuit. FIG. 4 is a graph showing the relationship between voltage input and output current of a conventional constant current circuit. 1, 7... operational amplifier, 2... transistor,
3...Load, 4...Voltage feedback circuit, 8, 9...DC power supply, R1 to R9...Resistance.
Claims (1)
入力電圧に応じた電流を負荷に供給する三端子電
流制御素子と、 前記三端子電流制御素子の出力端及び負荷の間
に接続された電流検出用抵抗と、 前記電流検出用抵抗の両端の電圧を検知して前
記演算増幅器に帰還する電流帰還回路とを有する
定電流出力回路において、 前記三端子電流制御素子の出力端と電圧源間に
抵抗を接続したことを特徴とする定電流出力回路
。 (2) 前記三端子電流制御素子は、エミツタフオ
ロワ型に接続されたトランジスタであることを特
徴とする実用新案登録請求の範囲第１項記載の定
電流出力回路。[Claims for Utility Model Registration] (1) An operational amplifier to which a voltage input signal is applied; an output of the operational amplifier is connected to a control terminal;
a three-terminal current control element that supplies a current according to the input voltage to the load; a current detection resistor connected between the output terminal of the three-terminal current control element and the load; and a voltage across the current detection resistor. and a current feedback circuit that detects and feeds back to the operational amplifier, characterized in that a resistor is connected between the output terminal of the three-terminal current control element and the voltage source. (2) The constant current output circuit according to claim 1, wherein the three-terminal current control element is a transistor connected in an emitter follower type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12127785U JPH0530172Y2 (en) | 1985-08-07 | 1985-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12127785U JPH0530172Y2 (en) | 1985-08-07 | 1985-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6232410U true JPS6232410U (en) | 1987-02-26 |
| JPH0530172Y2 JPH0530172Y2 (en) | 1993-08-02 |
Family
ID=31010394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12127785U Expired - Lifetime JPH0530172Y2 (en) | 1985-08-07 | 1985-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0530172Y2 (en) |
-
1985
- 1985-08-07 JP JP12127785U patent/JPH0530172Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0530172Y2 (en) | 1993-08-02 |