JPH02820U - - Google Patents
Info
- Publication number
- JPH02820U JPH02820U JP7840788U JP7840788U JPH02820U JP H02820 U JPH02820 U JP H02820U JP 7840788 U JP7840788 U JP 7840788U JP 7840788 U JP7840788 U JP 7840788U JP H02820 U JPH02820 U JP H02820U
- Authority
- JP
- Japan
- Prior art keywords
- movable contact
- variable resistors
- terminal
- ground
- audio signal
- 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
- 230000005236 sound signal Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
図は何れも本考案の一実施例を示すもので、第
１図は回路ブロツク図、第２図ａ，ｂ及びｃは可
変抵抗器の抵抗変化特性及びボリユーム調節対ス
ピーカ出力特性を示す図、第３図ａ，ｂ及びｃは
同じく可変抵抗器の抵抗変化特性及びボリユーム
調節対スピーカ出力特性を示す図である。
１…音声信号出力端子、２及び３…第１及び第
２可変抵抗器、４及び５…トランジスタ及びスイ
ツチ（スイツチ手段）、８及び９…パワーアンプ
及びスピーカ（スピーカ回路）。
Each of the figures shows an embodiment of the present invention; Fig. 1 is a circuit block diagram; Figs. 2 a, b, and c are diagrams showing resistance change characteristics of a variable resistor and volume adjustment versus speaker output characteristics; FIGS. 3a, 3b, and 3c are diagrams similarly showing the resistance change characteristics of the variable resistor and the volume adjustment versus speaker output characteristics. 1... Audio signal output terminal, 2 and 3... First and second variable resistors, 4 and 5... Transistor and switch (switch means), 8 and 9... Power amplifier and speaker (speaker circuit).
Claims (1)
た２つの可変抵抗器と、該可変抵抗器の可動接片
端子を選択的に短絡するスイツチ手段とを有し、
前記可動接片端子の内、アース側の端子をスピー
カ回路に接続したことを特徴とする音量調節回路
。 It has two variable resistors connected in series between an audio signal output terminal and ground, and a switch means for selectively shorting the movable contact terminals of the variable resistors,
A volume control circuit characterized in that a ground side terminal of the movable contact terminal is connected to a speaker circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7840788U JPH02820U (en) | 1988-06-14 | 1988-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7840788U JPH02820U (en) | 1988-06-14 | 1988-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02820U true JPH02820U (en) | 1990-01-05 |
Family
ID=31303332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7840788U Pending JPH02820U (en) | 1988-06-14 | 1988-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02820U (en) |
-
1988
- 1988-06-14 JP JP7840788U patent/JPH02820U/ja active Pending