JPS6383815U - - Google Patents
Info
- Publication number
- JPS6383815U JPS6383815U JP17709986U JP17709986U JPS6383815U JP S6383815 U JPS6383815 U JP S6383815U JP 17709986 U JP17709986 U JP 17709986U JP 17709986 U JP17709986 U JP 17709986U JP S6383815 U JPS6383815 U JP S6383815U
- Authority
- JP
- Japan
- Prior art keywords
- volume
- circuit
- output
- electronic
- supplied
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案による電子ボリウム回路の一実
施例を示す回路図、第２図は従来の電子ボリウム
回路の一例を示す回路図である。
１……入力切換回路、３……ボリウムＩＣ、４
……アツプ用ボリウムキー、５……ダウン用ボリ
ウムキー、６……制御回路、７……電子スイツチ
、８……ボリウムアツプ動作禁止回路、９……リ
ミツタアンプ、１０……整流検波回路。
FIG. 1 is a circuit diagram showing an embodiment of an electronic volume circuit according to the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional electronic volume circuit. 1...Input switching circuit, 3...Volume IC, 4
...Volume key for up, 5... Volume key for down, 6... Control circuit, 7... Electronic switch, 8... Volume up operation prohibition circuit, 9... Limiter amplifier, 10... Rectifier detection circuit.
Claims (1)
集積回路と、アツプ用及びダウン用の各ボリウム
キーの押釦操作にもとづき、制御信号により前記
ボリウム集積回路のボリウムを制御するための制
御回路を有する電子ボリウム回路において、前記
アツプ用ボリウムキーと前記制御回路間に介挿さ
れた電子スイツチと、前記入力切換回路からの出
力がないときのみ前記電子スイツチをオフ状態と
するためのボリウムアツプ動作禁止回路を備えた
ことを特徴とする電子ボリウム回路。 (2) 前記ボリウムアツプ動作禁止回路は、前記
入力切換回路からの出力が供給されるリミツタア
ンプと、このリミツタアンプの出力が供給され、
かつ前記電子スイツチをオン、オフ制御する整流
検波回路とからなる実用新案登録請求の範囲第１
項記載の電子ボリウム回路。[Claims for Utility Model Registration] (1) A volume integrated circuit to which the output of the input switching circuit is supplied, and a control signal that controls the volume of the volume integrated circuit based on the push button operation of each volume key for up and down. In an electronic volume circuit having a control circuit for controlling, an electronic switch is inserted between the volume key for turning up and the control circuit, and the electronic switch is turned off only when there is no output from the input switching circuit. An electronic volume circuit characterized by comprising a volume up operation prohibition circuit for controlling the volume up operation. (2) The volume up operation prohibition circuit includes a limiter amplifier to which the output from the input switching circuit is supplied, and an output from the limiter amplifier to which the output is supplied;
and a rectifier detection circuit that controls on/off the electronic switch.
Electronic volume circuit described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17709986U JPS6383815U (en) | 1986-11-18 | 1986-11-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17709986U JPS6383815U (en) | 1986-11-18 | 1986-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6383815U true JPS6383815U (en) | 1988-06-01 |
Family
ID=31117983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17709986U Pending JPS6383815U (en) | 1986-11-18 | 1986-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6383815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462551U (en) * | 1990-10-05 | 1992-05-28 |
-
1986
- 1986-11-18 JP JP17709986U patent/JPS6383815U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462551U (en) * | 1990-10-05 | 1992-05-28 |
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