JPH0344327U - - Google Patents
Info
- Publication number
- JPH0344327U JPH0344327U JP10171989U JP10171989U JPH0344327U JP H0344327 U JPH0344327 U JP H0344327U JP 10171989 U JP10171989 U JP 10171989U JP 10171989 U JP10171989 U JP 10171989U JP H0344327 U JPH0344327 U JP H0344327U
- Authority
- JP
- Japan
- Prior art keywords
- ground line
- resistor
- transistor
- variable resistor
- collector
- 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
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図及び第２図は本考案のボリユーム回路の
実施例の構成を示す図、第３図は従来のボリユー
ム回路の構成を示す図である。
ＶＲ１……ボリユーム、１１……入力端子、１
２……可動端子、１３……接地端子、Ｃ１……カ
ツプリングコンデンサ、Ｑ１……トランジスタ、
Ｃ２……コンデンサ、Ｒ１，Ｒ３……抵抗、２１
……端子、ＩＣ１……集積回路。
1 and 2 are diagrams showing the configuration of an embodiment of the volume circuit of the present invention, and FIG. 3 is a diagram showing the configuration of a conventional volume circuit. VR1... Volume, 11... Input terminal, 1
2...Movable terminal, 13...Grounding terminal, C1...Coupling capacitor, Q1...Transistor,
C2... Capacitor, R1, R3... Resistor, 21
...Terminal, IC1...Integrated circuit.
Claims (1)
の間に接続された可変抵抗器と、エミツタ及びコ
レクタの一方が前記可変抵抗器の可動端子に接続
されエミツタ及びコレクタの他方が前記接地ライ
ンに接続されたトランジスタとを有しており、該
トランジスタのベースに所定の電圧のミユート信
号を印加することにより、前記可動端子と前記接
地ラインとを交流的に短絡するようにしたことを
特徴とするボリユーム回路。 (2) 固定端子が信号入力ラインと接地ラインと
の間に接続された可変抵抗器と、一端が前記可変
抵抗器の可動端子に接続された抵抗器と、コレク
タが前記抵抗器の他端に接続されエミツタが前記
接地ラインに接続されたトランジスタとを有して
おり、該トランジスタのベースに所定の電圧のミ
ユート信号を印加することにより、前記抵抗の他
端と前記接地ラインとを短絡するようにしたこと
を特徴とするボリユーム回路。[Claims for Utility Model Registration] (1) A variable resistor whose fixed terminal is connected between a signal input line and a ground line, and an emitter and a collector whose emitters and collectors are connected to a movable terminal of the variable resistor. The other collector has a transistor connected to the ground line, and by applying a mute signal of a predetermined voltage to the base of the transistor, the movable terminal and the ground line are short-circuited in an alternating current manner. A volume circuit characterized by the following. (2) a variable resistor having a fixed terminal connected between a signal input line and a ground line; a resistor having one end connected to a movable terminal of the variable resistor; and a collector connected to the other end of the resistor. and a transistor whose emitter is connected to the ground line, and by applying a mute signal of a predetermined voltage to the base of the transistor, the other end of the resistor and the ground line are short-circuited. A volume circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171989U JPH0344327U (en) | 1989-08-30 | 1989-08-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171989U JPH0344327U (en) | 1989-08-30 | 1989-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0344327U true JPH0344327U (en) | 1991-04-24 |
Family
ID=31650655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10171989U Pending JPH0344327U (en) | 1989-08-30 | 1989-08-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344327U (en) |
-
1989
- 1989-08-30 JP JP10171989U patent/JPH0344327U/ja active Pending