JPH02147924U - - Google Patents
Info
- Publication number
- JPH02147924U JPH02147924U JP5668889U JP5668889U JPH02147924U JP H02147924 U JPH02147924 U JP H02147924U JP 5668889 U JP5668889 U JP 5668889U JP 5668889 U JP5668889 U JP 5668889U JP H02147924 U JPH02147924 U JP H02147924U
- Authority
- JP
- Japan
- Prior art keywords
- drive transistor
- power supply
- collector
- emitter
- transistor
- 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
- Control Of Amplification And Gain Control (AREA)
Description
図示した回路は、本考案の音量調整装置の一実
施例である。
主な図番の説明、３……可変抵抗器、４……摺
動子、８……制御回路、９……アツプ信号出力端
子、１０……ダウン信号出力端子、１１……第１
駆動トランジスター、１３……第２駆動トランジ
スター、１４……制御トランジスター、Ｍ……電
動機。
The illustrated circuit is an embodiment of the volume adjustment device of the present invention. Explanation of main drawing numbers, 3... Variable resistor, 4... Slider, 8... Control circuit, 9... Up signal output terminal, 10... Down signal output terminal, 11... First
Drive transistor, 13...Second drive transistor, 14...Control transistor, M...Electric motor.
Claims (1)
子を変位せしめることによつて音量を調整するこ
とが出来る音響機器において、エミツタが正の電
源に接続されているとともにコレクタと接地間に
前記電動機が負荷として接続されている第１駆動
トランジスターと、エミツタが負の電源に接続さ
れているとともにコレクタと接地間に前記電動機
が負荷として接続されている第２駆動トランジス
ターと、エミツタが正の電源に接続されていると
ともにコレクタが前記第２駆動トランジスターの
ベースに接続されている制御トランジスターと、
音量調整動作時前記第１駆動トランジスター及び
前記制御トランジスターの動作を制御する信号を
出力する制御回路とより成る音響機器の音量調整
装置。 In an audio device in which the volume can be adjusted by displacing the slider of a variable resistor by forward and reverse rotation of an electric motor, the emitter is connected to a positive power supply and the electric motor is connected between the collector and ground. a first drive transistor whose emitter is connected as a load; a second drive transistor whose emitter is connected to a negative power supply and whose collector and ground are connected as a load to the motor; and a second drive transistor whose emitter is connected to a positive power supply. a control transistor connected and having a collector connected to the base of the second drive transistor;
A volume adjustment device for an audio device, comprising a control circuit that outputs a signal for controlling the operation of the first driving transistor and the control transistor during a volume adjustment operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5668889U JPH02147924U (en) | 1989-05-17 | 1989-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5668889U JPH02147924U (en) | 1989-05-17 | 1989-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02147924U true JPH02147924U (en) | 1990-12-17 |
Family
ID=31580734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5668889U Pending JPH02147924U (en) | 1989-05-17 | 1989-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02147924U (en) |
-
1989
- 1989-05-17 JP JP5668889U patent/JPH02147924U/ja active Pending