JPS603905U - Control circuit for tape recorder with radio - Google Patents
Control circuit for tape recorder with radioInfo
- Publication number
- JPS603905U JPS603905U JP9391783U JP9391783U JPS603905U JP S603905 U JPS603905 U JP S603905U JP 9391783 U JP9391783 U JP 9391783U JP 9391783 U JP9391783 U JP 9391783U JP S603905 U JPS603905 U JP S603905U
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- tape recorder
- radio
- plug
- control 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図示した回路は、本考案の制御回路の一実施例である。
主な図番の説明、１・・・第１入力端子、２・・・第２
入力端子、５・・・ヘッドフオンジャック、１１・・・
第１スイツチ、１２・・・第２スイツチ、１３・・・第
１増幅回路、１４・・・第２増幅回路、１７・・・スピ
ーカー、１８・・・スイッチングトランジスター、１９
・・・制御トランジスター、２０・・・録音再生切換ス
イッチ、２２・・・選択スイッチ。The illustrated circuit is one embodiment of the control circuit of the present invention. Explanation of main drawing numbers, 1...1st input terminal, 2...2nd
Input terminal, 5...Headphone jack, 11...
First switch, 12... Second switch, 13... First amplifier circuit, 14... Second amplifier circuit, 17... Speaker, 18... Switching transistor, 19
... Control transistor, 20... Recording/playback selection switch, 22... Selection switch.
Claims (1)
ンジャック及び該ヘッドフオンジャックにプラグが挿入
されていないとき信号が印加される単一のスピーカーを
備えたテープレコーダーにおいて、ヘッドフオン使用時
左右の信号を夫々増幅すると共にスピーカー使用時前記
へッドフオンジャックへのプラグの着脱動作にて切換え
られるスイッチによりＢＴＬ接続される第１及び第２の
増幅回路と、マイクロフォン使用による録音動作状態に
あるとき導通ずると共に前記スイッチとの協働によりス
ピーカー使用時前記第１増幅回路及び第２増幅回路の入
力信号路を接地するスイッチングトランジスターとより
成り、マイクロフォン使用による録音動作状態記スピー
カーの放音動作を阻止し以ってハウリングの発生を防止
するようにしたことを特徴とするラジオ付テープレコー
ダーの制御回路。In a tape recorder equipped with a headphone jack into which a stereo headphone plug is inserted and a single speaker to which a signal is applied when no plug is inserted into the headphone jack, the left and right signals are amplified respectively when the headphones are used. At the same time, when the speaker is in use, the first and second amplifier circuits are connected to the BTL by a switch that is switched by the operation of attaching and detaching the plug to the headphone jack, and when the microphone is in the recording operation state, the above-mentioned It comprises a switching transistor that works with a switch to ground the input signal paths of the first amplifier circuit and the second amplifier circuit when the speaker is in use, and prevents the speaker from emitting sound when the microphone is in use. A control circuit for a tape recorder with a radio, characterized in that the occurrence of howling is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9391783U JPS603905U (en) | 1983-06-17 | 1983-06-17 | Control circuit for tape recorder with radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9391783U JPS603905U (en) | 1983-06-17 | 1983-06-17 | Control circuit for tape recorder with radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS603905U true JPS603905U (en) | 1985-01-12 |
Family
ID=30225075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9391783U Pending JPS603905U (en) | 1983-06-17 | 1983-06-17 | Control circuit for tape recorder with radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603905U (en) |
-
1983
- 1983-06-17 JP JP9391783U patent/JPS603905U/en active Pending
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