JPS6016304U - automatic volume adjustment circuit - Google Patents
automatic volume adjustment circuitInfo
- Publication number
- JPS6016304U JPS6016304U JP10607183U JP10607183U JPS6016304U JP S6016304 U JPS6016304 U JP S6016304U JP 10607183 U JP10607183 U JP 10607183U JP 10607183 U JP10607183 U JP 10607183U JP S6016304 U JPS6016304 U JP S6016304U
- Authority
- JP
- Japan
- Prior art keywords
- volume adjustment
- automatic volume
- recording
- adjustment circuit
- playback
- 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
- Signal Processing Not Specific To The Method Of Recording And Reproducing (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図は従来の自動音量調整回路を具備してなる磁気録
音再生装置の回路図、第２図イは従来及び本考案で用い
る自動音量調整回路を作動及び解除する切換スイッチＳ
Ｗ３のタイミング図、第２図口は従来及び本考案で用い
る録音再生切換用切換スイッチｓｗ１．ｓｗ２のタイミ
ング図、第３図は本考案による自動音量調整回路を具備
してなる磁気録音再生装置の回路図である。
２・・・整流回路、３・・・自動音量調整用ＮＰＮ ト
ランジスタ、１０・・・コンデンサマイク、１１・・・
録音再生増幅器、１２・・・ミューティングトランジス
タ。Figure 1 is a circuit diagram of a magnetic recording and reproducing device equipped with a conventional automatic volume adjustment circuit, and Figure 2A is a switch S for activating and canceling the automatic volume adjustment circuit used in the conventional and present invention.
The timing diagram of W3, Figure 2, shows the recording/playback selector switch sw1. used conventionally and in the present invention. The timing diagram of sw2, FIG. 3 is a circuit diagram of a magnetic recording and reproducing apparatus equipped with an automatic volume adjustment circuit according to the present invention. 2... Rectifier circuit, 3... NPN transistor for automatic volume adjustment, 10... Condenser microphone, 11...
Recording and playback amplifier, 12...muting transistor.
Claims (1)
いて、録音再生増幅器の前段と接地間にコレクタ・エミ
ツタ路が接続されている自動音量調節用のＮＰＮ ）ラ
ンリスタと、このＮＰＮ ）ランリスタのベースに接続
される整流回路を有し、この整流回路と前記自動音量調
整用のＮＰＮトランジスタのベースと接地間にコレクタ
・エミツタ路が接続されるＰＮＰ トランジスタと、こ
のＰＮＰ ）ランリスタのベース側に接続された録音位
置端子と電源が接続されたコモン端子と再生位置端子と
よりなるスイッチ手段と、このスイッチ手段の、録音位
置端子にベースが接続された録音再生増幅器のミューテ
ィングトランジスタとより構成したことを特徴とする磁
気録音再生装置の自動音量調整回路。In a magnetic recording/playback device equipped with an automatic volume adjustment circuit, there is provided an NPN) run lister for automatic volume adjustment in which a collector-emitter path is connected between the front stage of the recording and playback amplifier and ground; A PNP transistor having a rectifier circuit connected to the base, and a collector-emitter path connected between the rectifier circuit and the base and ground of the NPN transistor for automatic volume adjustment, and the PNP transistor connected to the base side of the run lister. a recording position terminal, a common terminal connected to a power source, and a playback position terminal; and a muting transistor of a recording/playback amplifier whose base is connected to the recording position terminal of the switch means. An automatic volume adjustment circuit for a magnetic recording and playback device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10607183U JPS6016304U (en) | 1983-07-07 | 1983-07-07 | automatic volume adjustment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10607183U JPS6016304U (en) | 1983-07-07 | 1983-07-07 | automatic volume adjustment circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6016304U true JPS6016304U (en) | 1985-02-04 |
Family
ID=30248377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10607183U Pending JPS6016304U (en) | 1983-07-07 | 1983-07-07 | automatic volume adjustment circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6016304U (en) |
-
1983
- 1983-07-07 JP JP10607183U patent/JPS6016304U/en active Pending
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