JPS603906U - Control circuit for tape recorder with radio - Google Patents
Control circuit for tape recorder with radioInfo
- Publication number
- JPS603906U JPS603906U JP9391883U JP9391883U JPS603906U JP S603906 U JPS603906 U JP S603906U JP 9391883 U JP9391883 U JP 9391883U JP 9391883 U JP9391883 U JP 9391883U JP S603906 U JPS603906 U JP S603906U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier circuit
- signal
- headphone
- output
- jack
- 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Ｚ。
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、６・・・接地
端子、７・・・第１信号端子、８・・・第２信号端子、
９・・・第１切換端子、１０・・・第２切換端子、１１
・・・第１ ′スイッチ、１２・・・第２スイツチ
、１３・・・第１増幅回路、１４・・・第２増幅回路、
１５．１６・・・入力信号路：、１７・・・第１出力コ
ンデンサー、１８・・・第２出力コンデンサー、１９・
・・スピーカー、２３・・・第１スイツチングトランジ
スター、２６・・・第２スイツチングトランジスター、
２７・・・制御トランジスター、２８・・・録音再生切
換スイッチ、３０・・・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...First input terminal, 2...Second input terminal, 5...Headphone jack, 6...Ground terminal, 7...First signal terminal, 8... ...Second signal terminal,
9...First switching terminal, 10...Second switching terminal, 11
. . . 1st switch, 12 . . . second switch, 13 . . . first amplifier circuit, 14 . . . second amplifier circuit,
15.16... Input signal path:, 17... First output capacitor, 18... Second output capacitor, 19.
... speaker, 23 ... first switching transistor, 26 ... second switching transistor,
27... Control transistor, 28... Recording/playback selection switch, 30... Selection switch.
Claims (1)
共に該信号を増幅する第１増幅回路と、ステレオ信号の
中の右チャンネルの信号が入力されると共に該信号を増
幅する第２増幅回路と、前記第１増幅回路の出力端子及
び第２増幅回路の出力端子に夫々出力コンデンサーを介
して接続された第１及び第２の信号端子を有すると共に
ヘッドフオンプラグの挿入に伴ない前記第１及び第２信
′号端子より切離される第１及び第２の切換端子を有す
るヘッドフオンジャックと、該ヘッド７オンジヤツクへ
のへッドフオンプラグの着脱動作に連動して切換えられ
ると共にヘッドフオンプラグの非挿入時前記第１増幅回
路の入力端子に右チャンネルの信号を入力せしめる第１
スイツチと、前記ヘッド７オンジヤツクへのへッドフオ
ンプラグの着脱動作に連動して切換えられると共にヘッ
ドフオンプラグの非挿入時前記第１増幅回路及び第２増
幅回路の出力端子間に前記出力コンデンサーを介するこ
となくスピーカーを接続する第２スイツチと、前記へッ
ドフオンジャックかへッドフオンプラグの非挿入状態に
あるとき前記第１切換端子から前記第１増幅回路の出力
信号を前記第２増幅回路の反転入力端子に導き前記第１
増幅回路及び第２増幅回路をＢＴＬ動作せしめる信号径
路と、ヘッドフオンプラグの非挿入時前記へッドフオン
ジャックの第２切換端子を通して印加される直流電流に
よりバイアスされて導通すると共に前記第２増幅回路の
入力信号路を接地する第１スイツチングトランジスター
と、マイクロフォン使用による録音動作状態にあるとき
導通すると共にヘッドフオンプラグの非挿入時前記第１
スイッチ及び第１スイツチングトランジスターとの協働
により前記第１増幅回路の入力信号路を接地する第２ス
イツ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、以ってイ１ウリングの発生を防止する゛ようにした
ことを特徴吉するラジオ付テープレコーダーの制御回路
。a first amplifier circuit that receives a left channel signal of the stereo signal and amplifies the signal; a second amplifier circuit that receives a right channel signal of the stereo signal and amplifies the signal; The first and second signal terminals are connected to the output terminal of the first amplifier circuit and the output terminal of the second amplifier circuit through output capacitors, respectively, and when the headphone plug is inserted, the first and second signal terminals are connected to the output terminal of the first amplifier circuit and the output terminal of the second amplifier circuit, respectively. A headphone jack having first and second switching terminals that are separated from the headphone jack and a headphone jack that is switched in conjunction with the operation of attaching and detaching the headphone plug to and from the headphone jack, and when the headphone plug is not inserted. The first amplifier circuit inputs the right channel signal to the input terminal of the first amplifier circuit.
The switch is switched in conjunction with the operation of attaching and detaching the headphone plug to the head 7 on-jack, and when the headphone plug is not inserted, the output capacitor is not connected between the output terminals of the first amplifier circuit and the second amplifier circuit. a second switch for connecting a speaker; and when the headphone jack or headphone plug is not inserted, the output signal of the first amplifier circuit is transferred from the first switching terminal to the inverting input terminal of the second amplifier circuit. Guide the first
A signal path for operating the amplifier circuit and the second amplifier circuit in BTL operation, and a signal path that is biased and conductive by a direct current applied through the second switching terminal of the headphone jack when the headphone plug is not inserted, and the second amplifier circuit is biased into conduction. a first switching transistor that grounds the input signal path of the circuit; and a first switching transistor that is electrically connected when the microphone is in recording mode and that is electrically connected when the headphone plug is not inserted.
a second switching transistor that cooperates with the switch and the first switching transistor to ground the input signal path of the first amplifier circuit; A control circuit for a tape recorder with a radio, which is characterized in that it prevents the occurrence of error.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9391883U JPS603906U (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 |
|---|---|---|---|
| JP9391883U JPS603906U (en) | 1983-06-17 | 1983-06-17 | Control circuit for tape recorder with radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS603906U true JPS603906U (en) | 1985-01-12 |
Family
ID=30225077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9391883U Pending JPS603906U (en) | 1983-06-17 | 1983-06-17 | Control circuit for tape recorder with radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603906U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183736U (en) * | 1986-05-14 | 1987-11-21 | ||
| JPS62183738U (en) * | 1986-05-14 | 1987-11-21 |
-
1983
- 1983-06-17 JP JP9391883U patent/JPS603906U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183736U (en) * | 1986-05-14 | 1987-11-21 | ||
| JPS62183738U (en) * | 1986-05-14 | 1987-11-21 | ||
| JPH0438737Y2 (en) * | 1986-05-14 | 1992-09-10 |
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