JPS60153018U - automatic volume adjustment circuit - Google Patents
automatic volume adjustment circuitInfo
- Publication number
- JPS60153018U JPS60153018U JP3999084U JP3999084U JPS60153018U JP S60153018 U JPS60153018 U JP S60153018U JP 3999084 U JP3999084 U JP 3999084U JP 3999084 U JP3999084 U JP 3999084U JP S60153018 U JPS60153018 U JP S60153018U
- Authority
- JP
- Japan
- Prior art keywords
- volume adjustment
- adjustment circuit
- automatic volume
- terminal
- earphone terminal
- 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)
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図はこの考案の一実施例を示す自動音量調整回路の
回路図、第２図は外部騒音とレベルコントロール回路の
ゲインの関係を示す図である。
図中、２はレベルコントロール回路、３はパワーアンプ
、４は検出アンプ、ＳＰはスピーカ、ＥＰはイヤホンプ
ラグ、Ｊはジャック端子を示す。FIG. 1 is a circuit diagram of an automatic volume adjustment circuit showing an embodiment of this invention, and FIG. 2 is a diagram showing the relationship between external noise and the gain of the level control circuit. In the figure, 2 is a level control circuit, 3 is a power amplifier, 4 is a detection amplifier, SP is a speaker, EP is an earphone plug, and J is a jack terminal.
Claims (1)
で聴取することができるように構成されているオーディ
オ機器において、イヤホン端子にプラグが挿入されたと
きに動作するスイッチによってスピーカの出力端子を検
出アンプの入力に接続し、前記検出アンプの制御信号に
よって、前記イヤホン端子に出力されるオーディオ信号
のレベルをコントロールするように構成したことを特徴
とする自動音量調整回路。In audio equipment configured for listening through speakers and either earphones or headphones, the output terminal of the speaker is connected to the input of the sensing amplifier by a switch that operates when a plug is inserted into the earphone terminal. and an automatic volume adjustment circuit configured to control the level of an audio signal output to the earphone terminal using a control signal from the detection amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3999084U JPS60153018U (en) | 1984-03-22 | 1984-03-22 | automatic volume adjustment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3999084U JPS60153018U (en) | 1984-03-22 | 1984-03-22 | automatic volume adjustment circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60153018U true JPS60153018U (en) | 1985-10-12 |
Family
ID=30548451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3999084U Pending JPS60153018U (en) | 1984-03-22 | 1984-03-22 | automatic volume adjustment circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60153018U (en) |
-
1984
- 1984-03-22 JP JP3999084U patent/JPS60153018U/en active Pending
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