KR870000715Y1 - Low frequency voice expanding and amplifying circuit in audio & video - Google Patents
Low frequency voice expanding and amplifying circuit in audio & video Download PDFInfo
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- KR870000715Y1 KR870000715Y1 KR2019840010589U KR840010589U KR870000715Y1 KR 870000715 Y1 KR870000715 Y1 KR 870000715Y1 KR 2019840010589 U KR2019840010589 U KR 2019840010589U KR 840010589 U KR840010589 U KR 840010589U KR 870000715 Y1 KR870000715 Y1 KR 870000715Y1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
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Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 임피던스 매칭회로 2 : 반전증폭회로1: impedance matching circuit 2: inverted amplifier circuit
3 : 좌우신호 합성회로 4 : 반전증폭회로3: left and right signal synthesis circuit 4: inverted amplification circuit
5 : 저역 부스트회로 6 : 좌신호 확대증폭회로5: low-pass boost circuit 6: left signal amplification circuit
7 : 임피던스 매칭회로 8 : 반전증폭회로7 Impedance Matching Circuit 8 Inverting Amplifier Circuit
9 : 좌우신호 합성회로 10 : 반전증폭회로9: left and right signal synthesis circuit 10: inverted amplifier circuit
11 : 저역 부스트회로 12 : 우신호 확대증폭회로11: low pass boost circuit 12: right signal amplification circuit
13 : 톤회로 SW1: 선택스위치13: tone circuit SW 1 : selection switch
VRL,VRR: 불륨의 좌, 우신호 입력단VR L , VR R : Left and right signal input of volume
본 고안의 튜너 및 턴테이블, 테이블테크, 스피커등이 조합된 오디오기기와, TV 및 VTR, 비디오디스크 플레이어등과 같은 비디오기기가 복합적으로 구성되어져 있는 오디오/비디오시스템을 제어하기 위한 제어기기에 관한 것으로, 특히 비디오기기를 하이파이오디오기기에다 연결시켜 사용할 때 비디오에서 출력되는 음성신호를 하이파이 음향으로출력시킬 수 있도록 된 오디오/비디오 제어기기의 저음음향확대증폭 회로에 관한 것이다.The present invention relates to a controller for controlling an audio / video system including a combination of a tuner, a turntable, a table tech, a speaker, and a video device such as a TV, a VTR, and a video disc player. In particular, the present invention relates to a low sound amplification amplification circuit of an audio / video controller that is capable of outputting a high fidelity audio signal from a video when a video device is connected to a hi-fi audio device.
종래에는 오디오/비디오시스템에서 하이파이 출력을 얻기위해 비디오시스템에다 카셋트레코더를 연결해 놓고서 이용하고 있었으나, 이러한 방법은 스피커의 크기에 제한을 받게되므로 저음영역을 충분히 재생시킬 수 없었기 때문에 이를 해결하기 위해 오디오기기의 베이스조절회로를 사용하여 저음효과를 얻을 수 있도록 된 방법을 이용하고 있었는바, 그와 같은 방법은 오디오기기의 베이스조절회로에서 진행중인 소프트가 영화인 경우에는 보다 낮은 저음효과를 느끼게 할 수가 없었다.Conventionally, a cassette recorder is connected to a video system to obtain a hi-fi output in an audio / video system. However, since this method is limited in the size of the speaker, it is not possible to reproduce the bass region sufficiently. The bass control circuit was used to obtain the bass effect. Such a method could not feel the lower bass effect when the software in the bass control circuit of the audio equipment was a movie.
본 고안은 상기와 같은 결점을 개선시키기 위하여 고안된 것으로서, 오디오/비디오시스템화에 따라 비디오기기를 하이파이 오디오기기와 연결시켜 영상 뿐만아니라 하이파이 음향효과를 얻기위하여, 사용자에 의해 선택된 선택스위치의 위치에 따라 프리앰프에서 출력된 신호를 톤회로(베이스/트레블 및 그래픽 이퀄라이저회로)를 가지고 조절해주거나, 또는 저음음향 확대증폭회를 통해 볼륨 또는 파워앰프르 출력시키도록 된 오디오/비디오시스템의 저음음향 확대증폭회로를 제공함에 목적이 있다.The present invention is designed to improve the above-mentioned shortcomings, and in order to obtain a hi-fi sound effect as well as an image by connecting a video device with a hi-fi audio device according to an audio / video system, it is free depending on the position of a selection switch selected by a user. Low-sound amplification circuit of audio / video system that adjusts signal output from amplifier with tone circuit (bass / treble and graphic equalizer circuit) or outputs volume or power amplifier through low-sound amplification amplification The purpose is to provide.
이하 본 고안의 구성 및 작용, 효과를 예시도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, the configuration, operation, and effects of the present invention will be described in detail with reference to the accompanying drawings.
본 고안은 프리앰프의 좌, 우신호 출력단(L)(R)에는 선택스위치(SW1)를 매개로 좌신호단(L)은 저항(R1)과 콘덴서(C1)를 통하여 우신호단(R)은 임피던스 매칭회로(1)와 반전증폭회로(2)를 통하여 각각 좌·우 신호 합성회로(3)에 연결되고, 상기 좌, 우 신호 합성회로(3)의 출력단에는 반전증폭회로(4)와 저역 부스트회로(5)가 차례로 연결되어 구성된 좌신호 확대증폭회로(6)가 볼륨(VRL)에 연결되고, 상기 좌신호 확대증폭회로(6)와 유사하게 저항(R15) 및 콘덴서(C12), 임피던스 매칭회로(7), 반전증폭회로(8), 좌, 우 신호 합성회로(9), 반전증폭회로(10), 저역 부스트회로(11)로 구성된 우 신호 확대증폭회로(12)가 볼륨(VRR)에 연결되며, 선택스위치(SW1)와 불륨(VRL)(VRR)간에는 톤회로(13)가 연결된 구조로 되어있다.According to the present invention, the left and right signal output terminals L and R of the preamplifier are connected to the right signal terminal L through the resistor R 1 and the capacitor C 1 through the selector switch SW 1 . R is connected to the left and right signal synthesizing circuit 3 through an impedance matching circuit 1 and an inverting amplifying circuit 2, respectively, and an inverting amplifying circuit is formed at an output terminal of the left and right signal synthesizing circuit 3; 4) and the low-frequency boost circuit 5 are sequentially connected to the left signal expansion amplifier circuit 6 connected to the volume VR L , and similar to the left signal expansion amplifier circuit 6, the resistors R 15 and Right signal expansion and amplification circuit consisting of a capacitor (C 12 ), an impedance matching circuit (7), an inverting amplifier circuit (8), a left and right signal synthesis circuit (9), an inverting amplifier circuit (10), and a low pass boost circuit (11). 12 is connected to the volume VR R , and the tone circuit 13 is connected between the selection switch SW 1 and the volume VR L (VR R ).
미설명부호 OP1-OP4는 연산증폭기를 나타낸다.Reference numerals OP 1 to OP 4 denote operational amplifiers.
제1도는 본 고안의 회로도를 나타낸 것으로서, 저항(R2)(R3)과 콘덴서(C2) 및 커플링 콘덴서(C3)로 구성된 임피던스 매칭회로(1)와 이와 유사하게 구성된 임피던스 매칭회로(7)는 파워앰프의 좌우신호 출력단(L)(R)으로 부터 입력되는 신호의 이득을 적절히 제어하여 각각의 반전증폭회로(2)(8)로 전달하기 위한 회로이다. 그러므로, 임피던스 매칭회로(1)에서 출력되는 우신호(R)는 반전증폭회로(2)에 있는 연산증폭기(OP1)의 반전단자로 입력되고, 임피던스 매칭회로(7)에서 출력되는 좌신호(L)는 반전증폭회로(8)에 있는 연산증폭기(OP3)의 반전단자로 입력된다.1 is a circuit diagram of the present invention, which is similar to an impedance matching circuit 1 composed of a resistor R 2 , R 3 , a capacitor C 2 , and a coupling capacitor C 3 . (7) is a circuit for appropriately controlling the gain of the signal input from the left and right signal output terminals L and R of the power amplifier and transmitting the gains to the inverting amplifier circuits 2 and 8, respectively. Therefore, the right signal R output from the impedance matching circuit 1 is input to the inverting terminal of the operational amplifier OP 1 in the inverting amplifier circuit 2 and the left signal (outputted from the impedance matching circuit 7). L) is input to the inverting terminal of the operational amplifier OP 3 in the inverting amplifier circuit 8.
여기서, 각각의 반전증폭회로(2)(4)(8)(10)의 이득은 저항(R4)(R6) 및 저항(R9)(R11), 저항(R19)(R21), 저항(R24)(R26)에 의해 조정된다. 그리고, 좌신호 확대증폭회로(6)의 출력단에 연결된 콘덴서(C11)와 저항(R14) 또는 우신호 확대증폭회로(11)의 출력단에 연결된 콘덴선(C11)와 저항(C14)은 고역차단회로로서 각 커플링소자에 의한 고역주파수의 차단특성이 부족할 경우 필요에 따라 추가되는 소자인 것이며, 콘덴서(C3)(C5)(C7)(C9)(C14)(C16)(C18)(C20)는 각 회로간의 연결시키는 결합콘덴서이다.Here, the gain of each inverted amplifier circuit (2) (4) (8) (10) is a resistor (R 4 ) (R 6 ) and a resistor (R 9 ) (R 11 ), a resistor (R 19 ) (R 21 ). ) And the resistance (R 24 ) (R 26 ). Then, the cone denseon (C 11) and resistor (C 14) connected to the output terminal of the capacitor (C 11) and a resistor (R 14) or the right signal-up amplification circuit (11) connected to the output terminal of the left signal-up amplifier (6) Is a high-pass cut-off circuit, which is added as needed when the high-frequency cutoff characteristic of each coupling element is insufficient, and is a capacitor (C 3 ) (C 5 ) (C 7 ) (C 9 ) (C 14 ) ( C 16 ) (C 18 ) (C 20 ) is the coupling capacitor that connects each circuit.
오디오/비디오시스템의 사용목적에 따라 사용자에 의하여 선택스위치(SW1)의 위치는 저음 확대증폭회로(6)(12) 또는 톤회로(13)로 전환될 수 있다.Depending on the purpose of use of the audio / video system, the position of the selection switch SW 1 may be switched by the user to the bass amplification amplifier circuits 6 and 12 or the tone circuit 13.
먼저 사용자가 선택스위치(SW1)의 조작으로 톤회로(13)를 선택하면 프리앰프에서 출력된 신호는 선택스위치(SW1)를 통하여 베이스/트레블 및 그래픽 이퀄라이저회로로 구성된 톤회로(13)로 전달되므로써 톤회로(13)의 각 기능에 의해 조정된 다음에 볼륨(VRL)(VRR)으로 출력된다.First, when the user selects the tone circuit 13 by the operation of the selection switch SW 1 , the signal output from the preamplifier is transferred to the tone circuit 13 composed of the base / treble and the graphic equalizer circuit through the selection switch SW 1 . By transmission, it is adjusted by each function of the tone circuit 13 and then output to the volume VR L VR R R.
이와는 달리, 사용자가 선택스위치(SW1)의 조작으로 저음확대증폭회로(6,12)를 선택하면, 우신호(R)는 임피던스 매칭회로(1)를 통해 반전증폭회로(2)에 있는 연산증폭기(OP1)의 반전단자(-)에 인가되어 반전증폭된후에 좌, 우 신호합성회로(3)에 인가되고, 이때, 좌신호(L)가 저항(R1)과 콘덴서(C1)를 통해 상기 좌, 우 신호 합성회로(3)에 인가되므로 상기 좌, 우 신호(L,R)가 좌, 우 신호 합성회로(3)에서 합성되게 된다. 여기서, 좌, 우 신호(L,R)가 스테레오신호로서 각각 다른 진폭과 주파수성분을 갖게 됨과 더불어 좌신호(L)는 저항(R1)과 콘덴서(C1)에 의해 위상이 지연되게 되고, 우신호(R)은 임피던스 매칭회로(1)와 반전증폭회로(2)에서 위상이 지연된후에 반전됨과 더불어 원래의 입력신호와는 다른 진폭을 갖도록 증폭되므로 결국 진폭이 큰 우신호(R)에 좌신호(L)가 더해지게 됨에 따라 합성신호의 진폭이 확대되게되며, 이는 진폭의 확대에 따라 음향이 증대되게 된다. 이때 좌신호(L)는 저항(R1)의 의해서, 우신호(R)는 저항(R2)(R7)과 저항(R4)(R6)에 의해 결정되는 연산증폭기(OP1)의 이득에 따라 그 크기가 변환된다.Alternatively, when the user selects the low loudness amplifier circuits 6 and 12 by the operation of the selector switch SW 1 , the right signal R is calculated in the inverted amplifier circuit 2 through the impedance matching circuit 1. It is applied to the inverting terminal (-) of the amplifier OP 1 and inverted and amplified, and then applied to the left and right signal synthesis circuits 3, where the left signal L is the resistor R 1 and the capacitor C 1 . Since the left and right signal synthesis circuit 3 is applied to the left and right signals L and R, the left and right signal synthesis circuit 3 is synthesized. Here, the left and right signals L and R have different amplitudes and frequency components as stereo signals, and the left signal L is delayed in phase by the resistor R 1 and the capacitor C 1 . The right signal R is inverted after the phase delay in the impedance matching circuit 1 and the inverting amplifier circuit 2 and amplified to have an amplitude different from that of the original input signal. As the signal L is added, the amplitude of the synthesized signal is enlarged, which in turn increases the sound. At this time, the left signal (L) is by means of a resistance (R 1), the right signal (R) is an operational amplifier (OP 1), which is determined by the resistance (R 2) (R 7) and a resistance (R 4) (R 6) The magnitude is converted according to the gain.
좌, 우 신호 합성회로(3)에서 합성된 좌, 우 합성신호는 콘덴서(C6)에 의해 임피던스가 매칭되고 저항(R8)에 의해 이득이 조정된 다음에 반전증폭회로(4)로 출력되어서 반전증 폭회로(4)를 구성하는 연산증폭기(OP2)와 저항(R9)(R11)에 의해 적당한 이득으로 조정되어 저역부스트회로(5)로 출력된다.The left and right synthesized signals synthesized by the left and right signal combiner 3 are matched by the capacitor C 6 and the gain is adjusted by the resistor R 8 and then output to the inverted amplifier 4. Then, the operational amplifier OP 2 constituting the inverting amplifier circuit 4 and the resistors R 9 and R 11 are adjusted to appropriate gains and output to the low pass boost circuit 5.
이에 따라, 저역부스트회로(5)에서는 저항(R12, R13)과 콘덴서(C10)에 의해 고역부분을 차단하는 대신 필요한 저역신호를 불륨(VRL)에 인가하게 되는데, 여기서 저항(R13)은 콘덴서(C10)를 통해 유출되는 전압을 지연시키게 되어 저역 특성을 증대시키는 작용을 하게 되므로 볼륨(VRL)에 출력되는 저역신호는 전체적으로 증대되어지게 되어 후단의 파워앰프에서 증폭된다. 이때, 저역부스트회로(5)에서 출력된 신호의 고역주파수 부분이 각 커플링소자에 의해 춤분히 차단되지 못하는 경우에는 콘덴서(C11)와 저항(R14)을 추가연결시켜서 고역주파수 차단특성을 양호하게 할 수 있다.Accordingly, in the low pass boost circuit 5, instead of blocking the high pass portion by the resistors R 12 and R 13 and the capacitor C 10 , the necessary low pass signal is applied to the volume VR L , where the resistance R 13 ) delays the voltage flowing through the capacitor (C 10 ) to increase the low pass characteristics, so that the low pass signal output to the volume (VR L ) is augmented as a whole and amplified in the rear power amplifier. At this time, when the high frequency part of the signal output from the low frequency boost circuit 5 cannot be cut off by each coupling element, the capacitor C 11 and the resistor R 14 are additionally connected to provide a high frequency blocking characteristic. It can be made favorable.
한편, 선택스위치(SW1)에서 출력되는 우신호(R)는 저항(R15)과 콘덴서(C12)를 통하여 좌, 우 신호 합성회로(9)로 공급되고, 선택스위치(SW1)에서 출력되는 좌신호(L)는 임피던스 매칭회로(7)를 통해 반전증폭회로(8)에 있는 연산증폭기(OP3)의 반전단자로 입력되고, 그에 따라 연산증폭기(OP3)에서는 반전된 신호가 출력되어 좌, 우 신호 합성회로(9)로 공급된다.On the other hand, the right signal (R) output from the selection switch (SW 1) is supplied to the left and right signal synthesizing circuit 9 through a resistor (R 15) and capacitor (C 12), the selection switch (SW 1) the left signal (L) that is output is input through the impedance matching circuit 7 to the inverting terminal of the operational amplifier (OP 3) in the inverting amplifier circuit 8, is the inverted signal the operational amplifier (OP 3) accordingly It is output and supplied to the left and right signal synthesizing circuit 9.
따라서, 좌, 우 신호 합성회로(9)에서 합성된 신호는 전술한 바와 유사한 동작을 거쳐서 저음이 확대된 신호로써 볼륨(VRR)의 전단으로 공급되어 파워앰프에서 증폭된다.Therefore, the signal synthesized in the left and right signal synthesizing circuit 9 is supplied to the front end of the volume VR R as an amplified signal of the bass through an operation similar to that described above, and amplified by the power amplifier.
상기한 바와 같이 본 고안은 프리앰프에서 출력된 좌신호(L)와 우신호(R)중 필요에 따라 선택스위치(SW1)를 절환시켜서 저음부분을 확대증폭 시키므로써 사람라 느끼기 어려운 저음에서 스테레오 분리감 및 확대감을 느낄 수 있고, 출력되는 신호가 영화인 경우에는 저음을 보다 효율적으로 확대증폭시키기 때문에 실체감을 느끼게 하는 음향효과를 실현시킬 수 있는 장점이 있다.As described above, according to the present invention, the selector switch SW 1 is switched between the left signal L and the right signal R output from the preamplifier as necessary to enlarge and amplify the bass portion so that the stereo sound is hard to be felt. A sense of separation and a feeling of enlargement can be felt, and when the output signal is a movie, the bass sound can be expanded and amplified more efficiently.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019840010589U KR870000715Y1 (en) | 1984-10-25 | 1984-10-25 | Low frequency voice expanding and amplifying circuit in audio & video |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019840010589U KR870000715Y1 (en) | 1984-10-25 | 1984-10-25 | Low frequency voice expanding and amplifying circuit in audio & video |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860005379U KR860005379U (en) | 1986-06-11 |
| KR870000715Y1 true KR870000715Y1 (en) | 1987-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019840010589U KR870000715Y1 (en) | 1984-10-25 | 1984-10-25 | Low frequency voice expanding and amplifying circuit in audio & video |
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| Country | Link |
|---|---|
| KR (1) | KR870000715Y1 (en) |
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1984
- 1984-10-25 KR KR2019840010589U patent/KR870000715Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR860005379U (en) | 1986-06-11 |
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