JPS6077115U - Muting drive circuit - Google Patents
Muting drive circuitInfo
- Publication number
- JPS6077115U JPS6077115U JP16870683U JP16870683U JPS6077115U JP S6077115 U JPS6077115 U JP S6077115U JP 16870683 U JP16870683 U JP 16870683U JP 16870683 U JP16870683 U JP 16870683U JP S6077115 U JPS6077115 U JP S6077115U
- Authority
- JP
- Japan
- Prior art keywords
- muting
- capacitor
- circuit
- drive circuit
- discharging
- 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)
- Amplifiers (AREA)
- Noise Elimination (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図は本考案に係るミューティング駆動回路の回路
図、第２図は第１図の本考案を説明するのに示した電圧
波形図である。
４３・・・ミューティング用トランジスタ、３・・・ス
イッチング・トランジスタ、９・・・コンデンサ、１１
・・・時定数回路、１３・・・放電回路、１７．３２・
・・ツェナー・ダイオード、２１．３６・・・スイッチ
回路、１５．３０・・・ミューティング時間設定回路、
１・・・ミューティング駆動回路。, FIG. 1 is a circuit diagram of a muting drive circuit according to the present invention, and FIG. 2 is a voltage waveform diagram shown to explain the present invention of FIG. 1. 43... Muting transistor, 3... Switching transistor, 9... Capacitor, 11
...Time constant circuit, 13...Discharge circuit, 17.32.
... Zener diode, 21.36 ... switch circuit, 15.30 ... muting time setting circuit,
1... Muting drive circuit.
Claims (1)
・トランジスタのベースとアース間に接続され、抵抗と
コンデンサの直列接続になる時定数回路と、 電源がオフ時に前記コンデンサの充電電圧を放電させる
放電回路と、 前記コンデンサの充電電圧を、所定のミューゲ、イング
解除時間を設定する電圧となるように放電する少なくと
も１つのツェナー・ダイオードと抵抗とスイッチ回路と
の直列接続になるミューティング時間設定回路とを具備
したことを特徴とするミューティング駆動回路。[Claims for Utility Model Registration] A time constant circuit that is connected between the base of a switching transistor that drives a muting transistor and ground, and that is a series connection of a resistor and a capacitor, and that controls the charging voltage of the capacitor when the power is turned off. a discharging circuit for discharging the capacitor, at least one Zener diode for discharging the charging voltage of the capacitor to a voltage for setting a predetermined muting release time, a resistor, and a switch circuit connected in series; a muting time; A muting drive circuit characterized by comprising a setting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16870683U JPS6077115U (en) | 1983-10-31 | 1983-10-31 | Muting drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16870683U JPS6077115U (en) | 1983-10-31 | 1983-10-31 | Muting drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6077115U true JPS6077115U (en) | 1985-05-29 |
Family
ID=30368759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16870683U Pending JPS6077115U (en) | 1983-10-31 | 1983-10-31 | Muting drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6077115U (en) |
-
1983
- 1983-10-31 JP JP16870683U patent/JPS6077115U/en active Pending
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