JPS60116726U - electronic volume - Google Patents
electronic volumeInfo
- Publication number
- JPS60116726U JPS60116726U JP396384U JP396384U JPS60116726U JP S60116726 U JPS60116726 U JP S60116726U JP 396384 U JP396384 U JP 396384U JP 396384 U JP396384 U JP 396384U JP S60116726 U JPS60116726 U JP S60116726U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- electronic volume
- current
- voltage
- base
- 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
Landscapes
- Networks Using Active Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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
別の実施例の回路構成図である。
１・・・作用端、２・・・基準端、３・・・第１のトラ
ンジスタ、４・・・基準抵抗１，５・・・演算増幅器、
６・・・第２のトランジスタ、７・・・制御電圧電源。FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG. 2 is a circuit diagram of another embodiment. DESCRIPTION OF SYMBOLS 1... Working end, 2... Reference end, 3... First transistor, 4... Reference resistor 1, 5... Operational amplifier,
6... Second transistor, 7... Control voltage power supply.
Claims (1)
よび基準抵抗で決まる電流がコレクタ電流となる第１の
トランジスタと、この第１のトランジスタのベース・エ
ミッタ間電圧に制御電圧を加えたものをベース・エミッ
タ間電圧とした上記第１のトランジスタと同極性の第２
のトランジスタを具備し、上記第１および第２のトラン
ジスタのコレクタ電流の和が作用端の電流となるように
したことを特徴とする外部制御可能な電子ボリウム。A first transistor has a working end and a reference end, and a current determined by a voltage applied therebetween and a reference resistance becomes a collector current, and a control voltage is applied to the base-emitter voltage of this first transistor. A second transistor of the same polarity as the first transistor with a base-emitter voltage of
1. An externally controllable electronic volume, characterized in that the sum of the collector currents of the first and second transistors is the current at the active end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP396384U JPS60116726U (en) | 1984-01-13 | 1984-01-13 | electronic volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP396384U JPS60116726U (en) | 1984-01-13 | 1984-01-13 | electronic volume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60116726U true JPS60116726U (en) | 1985-08-07 |
Family
ID=30479078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP396384U Pending JPS60116726U (en) | 1984-01-13 | 1984-01-13 | electronic volume |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60116726U (en) |
-
1984
- 1984-01-13 JP JP396384U patent/JPS60116726U/en active Pending
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