JPS5873619U - volume adjustment circuit - Google Patents
volume adjustment circuitInfo
- Publication number
- JPS5873619U JPS5873619U JP16927081U JP16927081U JPS5873619U JP S5873619 U JPS5873619 U JP S5873619U JP 16927081 U JP16927081 U JP 16927081U JP 16927081 U JP16927081 U JP 16927081U JP S5873619 U JPS5873619 U JP S5873619U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- volume adjustment
- setting circuit
- output
- 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
Landscapes
- Control Of Amplification And Gain Control (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図は従来の音量調整回路の一構成例を示す回路図、
第２図はこの考案の第１の実施例の構成を示す回路図、
第３図は同実施例における操作パネルの正面図、第４図
はこの考案の第２の実施例を示す回路−、第５図は同実
施例における操作パネルの正面図である。
４・・・・・・可変利得増幅器（電圧制御形増幅器）、
８・・・・・・アップダウン力ウレタ、９・・・・・・
デジタルアナログ変換器、１１・・・・・・第１の電圧
設定回路、１２・・・・・・第２の電圧設定回路、１７
・・・・・・電圧選択回路。FIG. 1 is a circuit diagram showing an example of the configuration of a conventional volume adjustment circuit.
FIG. 2 is a circuit diagram showing the configuration of the first embodiment of this invention;
FIG. 3 is a front view of the operation panel in the same embodiment, FIG. 4 is a circuit showing a second embodiment of this invention, and FIG. 5 is a front view of the operation panel in the same embodiment. 4...Variable gain amplifier (voltage controlled amplifier),
8...Up-down force ureta, 9...
Digital-to-analog converter, 11...first voltage setting circuit, 12...second voltage setting circuit, 17
・・・・・・Voltage selection circuit.
Claims (3)
数がなされるアップダウンカウンタの計数内容をデジタ
ルアナログ変換器によって対応する値の電圧に変換して
出力する第１の電圧設定回路と、可変抵抗器によって設
定された複数の電圧を出力する第２の電圧設定回路と、
前記第１、第２の電圧設定回路の各出力電圧に基づいて
得られる複数の電圧から任意の１電圧を選択する電圧選
択回路と、この電圧選択回路によって選択された電圧に
応じて利得が変化される可変利得増幅器とを具備してな
ることを特徴とする音量調整回路。(1) A first voltage setting circuit that converts the count contents of an up/down counter, which performs addition and subtraction counts in response to volume increase and decrease commands, into a voltage of a corresponding value using a digital-to-analog converter and outputs the voltage. , a second voltage setting circuit that outputs a plurality of voltages set by the variable resistor;
A voltage selection circuit that selects any one voltage from a plurality of voltages obtained based on each output voltage of the first and second voltage setting circuits, and a gain that changes according to the voltage selected by the voltage selection circuit. 1. A volume adjustment circuit comprising: a variable gain amplifier;
出力電圧−と前記第２の電圧設定回路の各出力電圧とか
ら任車の１電圧を選択するものである実用新案登録請求
の範囲第１項記載の音量調整回路。(2) The voltage selection circuit selects one voltage of the assigned vehicle from the output voltage of the first voltage setting circuit and each output voltage of the second voltage setting circuit. The volume adjustment circuit according to scope 1.
出力電圧示加算された前記第２の電圧設定回路の各出力
電圧のうちから任意の１電圧を選択するものである実用
新案登録請求の範囲第１項記載の音量調整回路。(3) The voltage selection circuit selects any one voltage from among the output voltages of the second voltage setting circuit added to the output voltages of the first voltage setting circuit.Registered as a utility model. A volume adjustment circuit according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16927081U JPS5873619U (en) | 1981-11-13 | 1981-11-13 | volume adjustment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16927081U JPS5873619U (en) | 1981-11-13 | 1981-11-13 | volume adjustment circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5873619U true JPS5873619U (en) | 1983-05-18 |
| JPH0110008Y2 JPH0110008Y2 (en) | 1989-03-22 |
Family
ID=29961261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16927081U Granted JPS5873619U (en) | 1981-11-13 | 1981-11-13 | volume adjustment circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5873619U (en) |
-
1981
- 1981-11-13 JP JP16927081U patent/JPS5873619U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0110008Y2 (en) | 1989-03-22 |
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