JPS6051605U - Tape recorder muting circuit - Google Patents
Tape recorder muting circuitInfo
- Publication number
- JPS6051605U JPS6051605U JP14280883U JP14280883U JPS6051605U JP S6051605 U JPS6051605 U JP S6051605U JP 14280883 U JP14280883 U JP 14280883U JP 14280883 U JP14280883 U JP 14280883U JP S6051605 U JPS6051605 U JP S6051605U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- diode
- capacitor
- voltage
- 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.)
- Granted
Links
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Amplifiers (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、本考案のミューティング回路の一実施
例である。
主な図番の説明、２・・・電源スィッチ、３・・・整流
平滑回路、４・・・定電圧回路、５・・・録音再生切換
スイッチ、１３・・・検出回路、１９・・・ミューティ
ング用トランジスター、２０・・・信号伝送路、２１・
・・反転回路、２５・・・コンデンサー、２７・・・第
１ダイオード、２８・・・ツェナーダイオード、２９・
・・第２ダイオード。The illustrated circuit is one embodiment of the muting circuit of the present invention. Explanation of main figure numbers, 2... Power switch, 3... Rectifier and smoothing circuit, 4... Constant voltage circuit, 5... Recording/playback selector switch, 13... Detection circuit, 19... Muting transistor, 20... signal transmission path, 21.
... Inverting circuit, 25... Capacitor, 27... First diode, 28... Zener diode, 29...
...Second diode.
Claims (1)
る整流平滑回路及び該整流平滑回路より得られる直流信
号を所定の電圧にする定電圧回路を備えたテープレコー
ダーにおいて、信号伝送路′ と接地間にコレクタ
・エミツタ路が接続されているミューティング用トラン
ジスターと、電源投入時及び電源遮断時反転動作すると
共に前記ミューティング用トランジスターを所定時間導
通状態にせしめる反転回路と、該反転回路への電源供給
路と接地間に接続されているコンデンサーと、前記整流
平滑回路の出力端子と前記コンデンサーの給電端子との
間に直列接続された第１ダイオード及びツェナーダイオ
ードと、前記定電圧回路の出力端子と前記コンデンサー
の給電端子との間に接続された第２ダイオードとより成
り、定常状態にあるとき前記第２ダイオードを介して前
記コンデンサーの給電端子に印加される電圧を第１ダイ
オード及びツェナーダイオードを介して印加される電圧
より高くなるようにしたことを特徴とするテープレコー
ダーのミューティング回路。In a tape recorder equipped with a rectifying and smoothing circuit that rectifies and smoothes an AC signal obtained from a commercial power supply into a DC signal, and a constant voltage circuit that adjusts the DC signal obtained from the rectification and smoothing circuit to a predetermined voltage, a a muting transistor having a collector-emitter path connected to the inverter; an inverting circuit that performs an inverting operation when the power is turned on and when the power is turned off, and keeps the muting transistor in a conductive state for a predetermined time; and a power supply to the inverting circuit. a first diode and a Zener diode connected in series between the output terminal of the rectifying and smoothing circuit and the power supply terminal of the capacitor; and the output terminal of the constant voltage circuit and the a second diode connected between the power supply terminal of the capacitor and the power supply terminal of the capacitor, and the voltage applied to the power supply terminal of the capacitor through the second diode in a steady state is transmitted through the first diode and the Zener diode. A muting circuit for a tape recorder, characterized in that the voltage is higher than the applied voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14280883U JPS6051605U (en) | 1983-09-14 | 1983-09-14 | Tape recorder muting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14280883U JPS6051605U (en) | 1983-09-14 | 1983-09-14 | Tape recorder muting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6051605U true JPS6051605U (en) | 1985-04-11 |
| JPH0413789Y2 JPH0413789Y2 (en) | 1992-03-30 |
Family
ID=30318969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14280883U Granted JPS6051605U (en) | 1983-09-14 | 1983-09-14 | Tape recorder muting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051605U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130210A (en) * | 1981-02-06 | 1982-08-12 | Kinseishiya Kk | Power switch noise remover for audio appliance |
-
1983
- 1983-09-14 JP JP14280883U patent/JPS6051605U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130210A (en) * | 1981-02-06 | 1982-08-12 | Kinseishiya Kk | Power switch noise remover for audio appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0413789Y2 (en) | 1992-03-30 |
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