JPS6273305U - - Google Patents
Info
- Publication number
- JPS6273305U JPS6273305U JP16519285U JP16519285U JPS6273305U JP S6273305 U JPS6273305 U JP S6273305U JP 16519285 U JP16519285 U JP 16519285U JP 16519285 U JP16519285 U JP 16519285U JP S6273305 U JPS6273305 U JP S6273305U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- power amplifier
- reproducing device
- muting
- muting circuit
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図はこの考案のパワーアンプのミユーテイ
ング回路図、第２図は記録・再生モードにおける
第１図の主要部の動作波形図である。
図中、１０はパワーアンプ、ＭＵＴはミユーテ
イング端子、１１は電源スイツチ、１２は入力側
の信号回路、Ｓｔ１〜Ｓｔ３は録・再切換スイツ
チに連動している切換スイツチ、Ｓａは拡声スイ
ツチ、Ｊはジヤツク端子、Ｐはプラグ、ＳＰはス
ピーカである。
FIG. 1 is a muting circuit diagram of the power amplifier of this invention, and FIG. 2 is an operating waveform diagram of the main parts of FIG. 1 in recording/reproducing mode. In the figure, 10 is a power amplifier, MUT is a muting terminal, 11 is a power switch, 12 is a signal circuit on the input side, St 1 to St 3 are changeover switches linked to the recording/playback switch, Sa is a public address switch, J is a jack terminal, P is a plug, and SP is a speaker.
Claims (1)
信号又は記録信号を増幅し、ヘツドホン端子及び
スピーカに供給するためミユーテイング回路付の
パワーアンプを備えている記録再生機構付拡声装
置において、記録モードに設定されているときは
、ヘツドホン端子にプラグが挿入され、かつ拡声
スイツチがオフとなつているときのみ、前記パワ
ーアンプにミユーテイングが付加され、他の各種
動作モードのときは、ミユーテイング回路が動作
しないように構成されていることを特徴とする記
録再生装置付パワーアンプのミユーテイング回路
。 In a public address system with a recording and reproducing mechanism, which is equipped with a recording and reproducing device and a power amplifier with a muting circuit for amplifying a reproduced signal or a recording signal from the recording and reproducing device and supplying the amplified signal to a headphone terminal and a speaker, setting the recording mode to recording mode. , muting is added to the power amplifier only when a plug is inserted into the headphone jack and the loudspeaker switch is off, and the muting circuit is disabled in other operating modes. A muting circuit for a power amplifier with a recording/reproducing device, characterized in that it is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16519285U JPS6273305U (en) | 1985-10-29 | 1985-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16519285U JPS6273305U (en) | 1985-10-29 | 1985-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6273305U true JPS6273305U (en) | 1987-05-11 |
Family
ID=31095000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16519285U Pending JPS6273305U (en) | 1985-10-29 | 1985-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6273305U (en) |
-
1985
- 1985-10-29 JP JP16519285U patent/JPS6273305U/ja active Pending
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