JPH0246419U - - Google Patents
Info
- Publication number
- JPH0246419U JPH0246419U JP12515388U JP12515388U JPH0246419U JP H0246419 U JPH0246419 U JP H0246419U JP 12515388 U JP12515388 U JP 12515388U JP 12515388 U JP12515388 U JP 12515388U JP H0246419 U JPH0246419 U JP H0246419U
- Authority
- JP
- Japan
- Prior art keywords
- mute
- potential point
- voltage
- capacitor
- predetermined level
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案のミユート回路の一実施例を示
した回路図、第２図は従来のミユート回路を装備
したオーデイオパワーアンプ系の一例を示したブ
ロツク図である。
１…オーデイオパワーアンプＩＣ回路、３…コ
ンデンサ、４，５…抵抗、６…トランジスタ。
FIG. 1 is a circuit diagram showing an embodiment of the mute circuit of the present invention, and FIG. 2 is a block diagram showing an example of an audio power amplifier system equipped with a conventional mute circuit. 1... Audio power amplifier IC circuit, 3... Capacitor, 4, 5... Resistor, 6... Transistor.
Claims (1)
ユート端子を有し、このミユート端子を第１の電
位点に結合することにより音声ミユートが成され
る増幅回路と、 前記ミユート端子と第１の電位点間に接続され
たスイツチ素子と、 前記増幅回路の駆動電源ラインに一端が接続さ
れ、この電源ラインの電圧が所定レベルを越えた
ときに導通するツエナーダイオードと、 このツエナーダイオードの他端に一端が接続さ
れ、前記電源ラインの電圧が所定レベルまで立上
がつたことを検出するコンデンサと、 このコンデンサの他端と基準電位点間に接続さ
れた分圧素子を含み前記スイツチ素子の導通・非
導通状態を制御するバイアス手段とを具備したこ
とを特徴とするミユート回路。[Claims for Utility Model Registration] An amplifier circuit that amplifies and outputs an audio signal and has a mute terminal, and audio mute is achieved by coupling the mute terminal to a first potential point; and the mute terminal. and a first potential point; a Zener diode, one end of which is connected to the drive power line of the amplifier circuit, and which becomes conductive when the voltage of the power supply line exceeds a predetermined level; The switch includes a capacitor, one end of which is connected to the other end, for detecting that the voltage of the power supply line has risen to a predetermined level, and a voltage dividing element connected between the other end of the capacitor and a reference potential point. A mute circuit characterized by comprising bias means for controlling conduction/non-conduction states of elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515388U JPH0246419U (en) | 1988-09-27 | 1988-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515388U JPH0246419U (en) | 1988-09-27 | 1988-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246419U true JPH0246419U (en) | 1990-03-29 |
Family
ID=31375506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12515388U Pending JPH0246419U (en) | 1988-09-27 | 1988-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246419U (en) |
-
1988
- 1988-09-27 JP JP12515388U patent/JPH0246419U/ja active Pending
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