KR810000274Y1 - AUDIO MUTING CIRCUIT - Google Patents
AUDIO MUTING CIRCUIT Download PDFInfo
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- KR810000274Y1 KR810000274Y1 KR790002631U KR790002631U KR810000274Y1 KR 810000274 Y1 KR810000274 Y1 KR 810000274Y1 KR 790002631 U KR790002631 U KR 790002631U KR 790002631 U KR790002631 U KR 790002631U KR 810000274 Y1 KR810000274 Y1 KR 810000274Y1
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Abstract
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Description
첨부도면은 본 고안의 회로도.The accompanying drawings are circuit diagrams of the present invention.
본 고안은 스피커를 통해 소리를 내는 음향기기에 사용되는 오디오우의 뮤팅(AUDIO MUTING)회로로서 전원스위치의 언 또는 어프시에 전압의 과도현상에 나타나는 잡음방지용 회로에 관한 것으로 반도체소자인 트랜지스터(TR)를 스위칭 소자로 사용하여 무접점 고속동작 특성을 가지도록한 것이다.The present invention relates to a noise preventing circuit that appears as a transient phenomenon of a voltage when the power switch is turned on or off as an audio muting circuit used for an audio device making a sound through a speaker. Is used as a switching element to have a contactless high speed operation characteristics.
종래 오디오우의 뮤팅회로에도 여러 가지가 제안 사용되어 왔으나 그 대부분이 릴레이등을 사용하여 된 것이 일반적이였던 것이었으나 고속동작을 기할 수 없었으며 가격면에서도 비경제적이였던 것이다.Conventional audio-woo muting circuits have been proposed and used, but most of them were made using relays, but they could not operate at high speed and were uneconomical in terms of price.
본 고안은 상기한 문제점을 감안하여 고안된 것으로서 음향기기의 전원스위치를 언시키거나 어프시킬때에 나타나는 전원전압의 과도상태에서 발생하는 이상잡음을 스피커 출력으로 나타나지 않게 출력단을 일정시간동안 단락시키는 회로를 얻고져 함에 그 목적이 있는 것이다.The present invention has been devised in view of the above problems, and has a circuit for shortening the output stage for a certain period of time so that abnormal noise generated in the transient state of the power voltage appearing when the power switch of the sound equipment is turned off or afflicted does not appear as a speaker output. The purpose is gained.
본 고안의 내용을 첨부된 예시도면에 의하여 상세히 설명하면 다음과 같다. 즉 스위치부(1)에 접속된 저항기(9)의 일단에 저항기(10)를 접지접속하고 또한 트랜지스터(11)의 베이스를 연결하고, 트랜지스터(11)의 콜렉터가 저항기(14)를 거쳐 다이오드(13)를 거쳐 저항기(9)에 접속되며 또한 트랜지스터(12)의 베이스에 접속되며 트랜지스터(11)의 에미터와 트랜지스터(12)의 에미터가 공동접지되고 트랜지스터(12)의 콜렉터와 트랜지스터(5)의 콜렉터가 스피커단에 연결되고 트랜지스터(5)의 베이스는 콘덴샤(4)를 거쳐 다이오드의 음극에 접속되고 또한 콘덴샤(13)와 저항기(7)를 거쳐 접지접속되어 구성된 것으로서 스위치언어프시 잡음을 제거하는 오디오우뮤팅 회로이다.When described in detail by the accompanying drawings the contents of the subject innovation as follows. That is, the resistor 10 is grounded to one end of the resistor 9 connected to the switch unit 1, and the base of the transistor 11 is connected, and the collector of the transistor 11 passes through the resistor 14 to form a diode ( 13 to the resistor 9 and to the base of the transistor 12, the emitter of the transistor 11 and the emitter of the transistor 12 are co-grounded and the collector of the transistor 12 and the transistor 5. ) Is connected to the speaker stage, the base of the transistor (5) is connected to the cathode of the diode via the condenser (4), and ground connected via the capacitor (13) and the resistor (7). The audio umuting circuit eliminates
본고안은 증폭기에서 인가하는 전압의 변동에 의해 이상잡음이 나는 것을 방지하는 회로로서 트랜지스터(TR)소자를 스위칭 소자로 이용하여 증폭기에 인가되는 전압이 정상상태에 도달한 경우에 한하여 출력이 나타나게 하고 이상전압에서는 증폭기의 입력단이나 출력단이 단락되게 하여 잡음출력이 스피커로 나타나지 않게하는 회로로서 전원스위치를 언시켰을 때 저항기(9)(10)이 트랜지스터(11)를 도통시켜 트랜지스터(12)를 비도통시키고 콘덴샤(4)(7)를 충전하면서 시정수(콘텐샤(7)×저항기(8))시간 동안 트랜지스터(5)를 도통시켜 콜렉터와 에미터를 단락시키고 전원스위치(1)를 어프시켰을 경우에는 트랜지스터(11)가 비도통되면서 콘덴샤(4)의 충전전기에 의해 저항기(14)를 통해 트랜지스터(12)를 도통시켜 콜렉터와 에미터를 단락시키는 오디오우 뮤팅회로인 것이다.This paper is a circuit to prevent abnormal noise caused by the fluctuation of the voltage applied from the amplifier. By using the transistor (TR) element as the switching element, the output appears only when the voltage applied to the amplifier reaches the steady state. Under the abnormal voltage, the input and output terminals of the amplifier are short-circuited so that the noise output does not appear in the speaker. When the power switch is turned off, the resistors 9 and 10 conduct the transistor 11 so that the transistor 12 is not conducting. When the transistor (5) is turned on for a time constant (content (7) x resistor (8)) while charging the capacitor (4) and (7), the collector and emitter are short-circuited and the power switch (1) is afflicted. In this case, the transistor 11 is non-conducting while the transistor 12 conducts the transistor 12 through the resistor 14 by the charging electric of the condenser 4 to short-circuit the collector and the emitter. To the circuit.
본 고안의 작동상태를 설명하면 다음과 같다. 즉 전원스위치(1)를 통전시키면 콘덴샤(2)에 충전된 전압이 앰프(3)를 동작시켜 주고 스위치가 통전되었을 때 충격파가 나타나면 앰프(3)에서 이상잡음이 발생되지만 콘덴샤(4)를 통하여 트랜지스터(5)가 동작하여 출력단을 단락시켜 스피커(6)로 잡음출력이 나타나지 않게하고 콘덴샤(7)에 충전된 전압이 트랜지스터(5)의 베이스, 에미터간 임피던스와 저항기(8)와의 병열합성 저항과의 시정수 관계에 의거 콘덴샤(7)가 방전된다. 콘덴샤(7)가 방전되어 전위가 트랜스터지(5)를 도통할 수 없는 영역에 도달하면 트랜지스터(5)가 비도통되어 정상적인 출력이 스피커(6)를 통해 나타나는 것이다.Referring to the operating state of the present invention is as follows. That is, when the power switch 1 is energized, the voltage charged in the condenser 2 operates the amplifier 3, and when a shock wave appears when the switch is energized, abnormal noise is generated from the amplifier 3, but through the condenser 4 The transistor 5 operates to short the output terminal so that the noise output does not appear in the speaker 6, and the voltage charged in the capacitor 7 is a parallel synthesis resistance between the base and emitter impedance of the transistor 5 and the resistor 8. The condenser 7 is discharged based on the time constant relationship with. When the condenser 7 is discharged and the potential reaches a region where the potential of the transverter 5 cannot be conducted, the transistor 5 is not conducting and a normal output appears through the speaker 6.
이때 트랜지스터(5)의 베이스, 에미터간의 임피던스와 저항기(8)와의 병렬 저항성분과 콘덴샤(7)와 이루는 시정수를 길게 해주면 일단 전원스위치(1)를 통전시켜 줄 때 콘덴샤(4)를 통하여 콘덴샤(7)의 충전된 전압이 트랜지스터(5)를 도통시켜 주므로 트랜지스터(5)가 도통되어 출력단이 단락된다. 이때 저항(8)을 조절해 주면 뮤팅(MUTING)시간을 임의로 조절할 수 있는 것이다.At this time, if the resistance between the base and the emitter of the transistor 5, the parallel resistance component of the resistor 8, and the time constant of the capacitor 7 are increased, the capacitor 4 is connected to the capacitor 4 when the power switch 1 is energized. Since the charged voltage of (7) conducts the transistor 5, the transistor 5 conducts and the output terminal is shorted. At this time, if the resistance (8) is adjusted, the muting time can be arbitrarily adjusted.
이와 동시에 저항기(9)와 저항기(10)의 저항을 콘덴샤(2)의 충전전압의 90%이내의 영역에서는 트랜지스터(11)가 포와영역에 돌입하지 않도록 설정시켜 주면 콘덴샤(2)가 충전전압의 90%이내에서는 트랜지스터(12)가 동작을 하여 트랜지스터(5)와 같이 출력단을 단락시킨다.At the same time, if the resistance of the resistor 9 and the resistor 10 is set within 90% of the charging voltage of the condenser 2 so that the transistor 11 does not enter the porosity region, the condenser 2 is set to the charge voltage. Within 90%, the transistor 12 operates to short-circuit the output terminal like the transistor 5.
전원스위치를 통전시키므로 발생되는 충격파에 대해서는 트랜지스터(5)가 동작하여 출력단을 단락시켜주게 되는 것이다.The transistor 5 operates to short-circuit the output terminal for the shock wave generated by energizing the power switch.
이때 다이오드(13)에 의해서 콘덴샤(4)의 충전전압이 앰프(3)로 흘러 들어가지 못하고 저항기(14)에 의해 트랜지스터(12)와 저항기(8)의 회로를 통하여 방전하면 트랜지스터(12)가 작동되기 때문에 콘덴샤(2)의 방전시간보다 길게 설정하여 앰프(3)가 완전하게 동작을 정지할때까지 트랜지스터(12)를 도통시켜 주므로서 출력단을 단락시킬수가 있는 것이다.At this time, when the charging voltage of the capacitor 4 does not flow into the amplifier 3 by the diode 13 and is discharged through the circuit of the transistor 12 and the resistor 8 by the resistor 14, the transistor 12 is turned on. Since it is operated, it is set longer than the discharge time of the condenser 2, and the output terminal can be short-circuited by making the transistor 12 conduct until the amplifier 3 stops operating completely.
이상과 같이 작동되는 본 고안은 고속동작의 특성을 얻을 수 있는 것으로 이상잡음이 없는 깨끗한 음질을 얻을 수 있는 것이다. 또한 본 고안은 반도체 소자인 트랜지스터(TR)를 스위칭 소자로 사용하므로서 저렴한 간격으로 제작할 수 있는 것이다.The present invention operated as described above is to obtain the characteristics of the high-speed operation is to obtain a clear sound quality without abnormal noise. In addition, the present invention can be produced at low intervals by using a transistor (TR) which is a semiconductor device as a switching device.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR790002631U KR810000274Y1 (en) | 1979-05-09 | 1979-05-09 | AUDIO MUTING CIRCUIT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR790002631U KR810000274Y1 (en) | 1979-05-09 | 1979-05-09 | AUDIO MUTING CIRCUIT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR810000274Y1 true KR810000274Y1 (en) | 1981-03-24 |
Family
ID=19212483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR790002631U Expired KR810000274Y1 (en) | 1979-05-09 | 1979-05-09 | AUDIO MUTING CIRCUIT |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR810000274Y1 (en) |
-
1979
- 1979-05-09 KR KR790002631U patent/KR810000274Y1/en not_active Expired
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