JPS58127424U - Tape recorder recording/playback amplifier circuit - Google Patents
Tape recorder recording/playback amplifier circuitInfo
- Publication number
- JPS58127424U JPS58127424U JP2328182U JP2328182U JPS58127424U JP S58127424 U JPS58127424 U JP S58127424U JP 2328182 U JP2328182 U JP 2328182U JP 2328182 U JP2328182 U JP 2328182U JP S58127424 U JPS58127424 U JP S58127424U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- recording
- equalizer
- diode
- amplifier 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
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図示した回路は、録音再生兼用増幅回路の一実施例であ
る。
主な図番の説明、２・・・増幅回路、４・・・再生イコ
ライザ回路、８・・・録音イコライザ回路、１１・・・
負帰還端子、１２・・・第１ダイオード、１３・・・第
２グイ−１ド、１４・・・第１抵抗、１６・・・第２抵
抗、１７・・・第１制御トランジスター、１９・・・第
２制御トランジスター、２１・・・第３制御トランジス
ター、２２・・・制御スイッチ。The illustrated circuit is an example of a recording/reproducing amplifier circuit. Explanation of main drawing numbers, 2... Amplifier circuit, 4... Playback equalizer circuit, 8... Recording equalizer circuit, 11...
Negative feedback terminal, 12... First diode, 13... Second guide, 14... First resistor, 16... Second resistor, 17... First control transistor, 19... ...Second control transistor, 21...Third control transistor, 22...Control switch.
Claims (1)
に録音動作時マイクロフォン等より得られる録音信号が
入力される増幅回路を備えたテープレコーダーにおいて
、該増幅回路の周波数特性を再生イコライザ特性に合わ
せるべく負帰還回路内に挿入接続された再生用イコライ
ザ回路と該増幅回路の周波数特性を録音イコライザ特性
に合わせるべく負帰還回路内に挿入接続された録音イコ
ライザ回路と、−前記再生用イコライザ回路に直列接続
された第１ダイオードと、前記録音イコライザ回路に直
列接続された第２ダイオードと、前記第１ダイオード及
び第２ダイオードにバイアス電流を供給するバイアス回
路とより成り、前記バイアス回路からの前記第１ダイオ
ード及び第２ダイオードへのバイアス電流の有・無によ
り前記再生イコライザ回路及び録音イコライザ回路の動
作・不動作を制御するようにしたことを特徴とするテー
プレコーダーの録音再生兼用増幅回路。In a tape recorder equipped with an amplifier circuit to which a reproduction signal from a magnetic head is input during reproduction operation and a recording signal obtained from a microphone etc. during recording operation, the frequency characteristics of the amplifier circuit are adjusted to the reproduction equalizer characteristics. A reproduction equalizer circuit inserted and connected in the negative feedback circuit, a recording equalizer circuit inserted and connected in the negative feedback circuit to match the frequency characteristics of the amplifier circuit to the recording equalizer characteristics, and - connected in series to the reproduction equalizer circuit. a second diode connected in series to the recording equalizer circuit, and a bias circuit that supplies bias current to the first diode and the second diode, the first diode being connected in series to the recording equalizer circuit; and a recording/playback amplifier circuit for a tape recorder, characterized in that operation/non-operation of the playback equalizer circuit and the recording equalizer circuit is controlled by the presence/absence of a bias current to a second diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2328182U JPS58127424U (en) | 1982-02-19 | 1982-02-19 | Tape recorder recording/playback amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2328182U JPS58127424U (en) | 1982-02-19 | 1982-02-19 | Tape recorder recording/playback amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58127424U true JPS58127424U (en) | 1983-08-29 |
Family
ID=30035327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2328182U Pending JPS58127424U (en) | 1982-02-19 | 1982-02-19 | Tape recorder recording/playback amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58127424U (en) |
-
1982
- 1982-02-19 JP JP2328182U patent/JPS58127424U/en active Pending
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