KR950008185Y1 - Power supplying circuit - Google Patents
Power supplying circuit Download PDFInfo
- Publication number
- KR950008185Y1 KR950008185Y1 KR2019900000830U KR900000830U KR950008185Y1 KR 950008185 Y1 KR950008185 Y1 KR 950008185Y1 KR 2019900000830 U KR2019900000830 U KR 2019900000830U KR 900000830 U KR900000830 U KR 900000830U KR 950008185 Y1 KR950008185 Y1 KR 950008185Y1
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- South Korea
- Prior art keywords
- current
- voltage
- microphone
- low
- input load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 전원공급회로도이다.1 is a power supply circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 입력부하부 2 : 전압전류제어부1: input load part 2: voltage and current control part
3 : 증폭부 MC : 마이크로폰3: amplification unit MC: microphone
R1-R6 : 저항 C1-C4 : 콘덴서R1-R6: Resistor C1-C4: Capacitor
D1 : 다이오드 2a : 차동증폭기D1: Diode 2a: Differential Amplifier
본 고안은 임피던스가 서로 다른 마이크로폰을 공용할 수 있는 전원회로에 관한 것으로, 특히 별도의 단자없이 한개의 단자를 통해 임피던스가 서로 다른 마이크로폰을 공유할 수 있는 전원공급회로에 관한 것이다.The present invention relates to a power supply circuit that can share microphones with different impedances, and more particularly, to a power supply circuit that can share microphones with different impedances through one terminal without a separate terminal.
종래의 전원공급회로는 임피던스와 동작전류가 서로 다른 마이크로폰을 사용하기 위해서 각각의 회로를 구성하고, 서로 공용하기 위해서는 스위치를 부가시켜 접속단자를 사용하여 서로 임피던스가 다른 마이크로폰을 연결하여 사용하였다. 즉 임피던스가 작은 카본 마이크로폰은 저전압에서 큰 전류를 흘려야 하며, 상대적으로 임피던스가 큰 콘덴서 마이크로폰은 고전압 저전류를 필요로 하는 등 서로 다른 방식이므로 필요에 따라 별도의 전원공급회로와 이를 연결하여 주는 접속단자가 필요한 문제점이 있었다.In the conventional power supply circuit, each circuit is configured to use microphones having different impedances and operating currents, and in order to share with each other, switches are used to connect microphones having different impedances to each other by using connection terminals. In other words, carbon microphones with low impedance should flow a large current at low voltage, and capacitors with relatively high impedance require different voltages such as high voltage and low current. Therefore, a separate power supply circuit and a connection terminal are connected as necessary. There was a necessary problem.
본 고안은 이와 같은 종래의 문제점을 시정보완하기 위하여 고전압 저전류를 필요로 하는 콘덴서 마이크로폰과 저전압 대전류를 필요로 하는 카본 마이크로폰을 별도의 부가물 없이 1개의 접속단자를 통해 공용이 가능토록 하기 위해 안출한 것으로서, 이하 본 고안을 첨부된 도면에 의거하여 그 구조를 상세히 설명하면 다음과 같다.In order to solve such a conventional problem, the present invention devises a condenser microphone requiring a high voltage and a low current and a carbon microphone requiring a low voltage and high current to be shared through one connection terminal without any additional accessories. As a one, when described in detail the structure of the present invention based on the accompanying drawings as follows.
첨부한 도면은 본 고안의 전원공급회로도로서 이에 도시한 바와 같이 음성신호를 입력으로 하여 이를 전기적 신호로 변환시키기 위해 마이크로폰(MC), 저항(R1), 콘덴서(C1)로 구성한 입력부하부(1)와, 상기 입력부하부(1)에 구성된 마이크로폰(MC)의 임피던스에 따라 고전압 저전류와 저전압 대전류를 선택공급하여 마이크로폰(MC)을 구동시키기 위해 저항(R2)(R3)(R4), 콘덴서(C3), 다이오드(D1)로 구성한 전압전류제어부(2)와, 상기 전압전류제어부(2)에 의해 구동된 입력부하부(1)의 출력신호를 입력으로 한 후 이의 비반전단자(+)와의 차를 증폭하기 위해 차동증폭기(3a)와 콘덴서 (C2)(C4), 저항(R5)(R6)으로 구성된 증폭부(3)로서 구성한다.The accompanying drawings are a power supply circuit diagram of the present invention, as shown therein, to input a voice signal and convert it into an electrical signal, an input load part 1 consisting of a microphone MC, a resistor R1, and a capacitor C1. And a resistor (R2) (R3) (R4) and a capacitor (C3) for selectively supplying a high voltage low current and a low voltage large current according to the impedance of the microphone MC configured in the input load unit 1 to drive the microphone MC. ), And the difference between the non-inverting terminal (+) of the voltage current control unit 2 composed of the diode D1 and the output signal of the input load unit 1 driven by the voltage current control unit 2 as an input. In order to amplify, it is configured as an amplifier 3 composed of a differential amplifier 3a, a capacitor C2, C4, and a resistor R5, R6.
이와 같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effect of the present invention configured in this way in detail as follows.
첨부된 도면과 같이 입력부하부(1)의 저항(R1)에 의한 마이크로폰(MC)의 전류제한과, 콘덴서(C1)에 의한 입력신호 및 전원의 고주파 잡음을 제거하며 전압전류 제어부(2)의 저항(R2)에 의한 고전압 저전류(VH)공급과 다이오드(D1) 및 저항 (R3)(R4), 콘덴서(C3)에 의한 저전압 대전류(VL)를 공급하게 되는데 만일 입력부하부(1)에 임피던스가 큰 콘덴서 마이크로폰(MC)이 연결되어 있을 때 R2/(MC+R1)의 비에 의해 A점의 전압은 저전압 대전류(VL)보다 높게 되고 따라서 전압전류 제어부 (2)의 다이오드(D2)는 오프되므로 저전압 대전류(VL)는 저항(R3)(R4)과 콘덴서 (C3) 및 다이오드(D1)를 통하지 못하고, 고전압 저전류(VH)가 저항(R2)(R1)과 콘덴서(C1)를 통해 임피던스가 큰 콘 마이크로폰(MC)을 동작시키게 된다. 이에 반해 임피던스가 작은 카본 마이크로폰(MC)을 입력부하부(1)에 연결하면 전압전류제어부(2)의 A점의 전압이 저전압 대전류(VL)보다 낮아져 다이오드(D1)가 턴-온되고 이에 따라 저전압 대전류(VL)는 저항(R2)보다 상대적으로 적은 저항값을 가진 저항(R3)(R4)과, 턴-온된 다이오드(D1) 및 콘덴서(C1), 저항(R1)을 통해 입력부하부(1)의 마이크로폰(MC)을 구동시키게 된다.As shown in the accompanying drawings, the current limit of the microphone MC by the resistor R1 of the input load unit 1, the high frequency noise of the input signal and the power supply by the capacitor C1, and the resistance of the voltage current control unit 2 are eliminated. The high voltage low current VH is supplied by (R2) and the low voltage high current VL is supplied by the diode D1, the resistors R3, R4, and the capacitor C3. When the large condenser microphone MC is connected, the voltage at point A is higher than the low voltage large current VL due to the ratio of R2 / (MC + R1), so the diode D2 of the voltage current controller 2 is turned off. The low voltage high current (VL) does not pass through the resistors R3 (R4) and the capacitor (C3) and the diode (D1), and the high voltage low current (VH) has impedance through the resistors (R2) (R1) and the capacitor (C1). The large cone microphone MC is operated. On the other hand, when the low impedance carbon microphone MC is connected to the input load section 1, the voltage at the point A of the voltage current control section 2 is lower than the low voltage high current VL, so that the diode D1 is turned on and accordingly the low voltage The large current VL is connected to the input load part 1 through the resistors R3 and R4 having a resistance value that is less than that of the resistor R2, the turned-on diode D1 and the capacitor C1, and the resistor R1. Will drive the microphone (MC) of.
여기서 증폭부(3)의 콘덴서(C2)는 마이크로폰(MC)으로부터 출력된 신호중 교류전류는 통과시키고 직류전류(DC)는 차단하기 위한 것이고, 저항(R5)(R6)과 콘덴서 (C4)는 차동증폭기(3a)를 이용하여 적당한 이득을 얻기 위한 것이다.Here, the capacitor C2 of the amplifier 3 is for passing an alternating current and blocking the direct current DC among the signals output from the microphone MC, and the resistors R5 and R6 and the capacitor C4 are differential. It is for obtaining an appropriate gain using the amplifier 3a.
이와 같이 본 고안은 고전압 저전류를 필요로 하는 콘덴서 마이크로폰과 저전압 대전류를 필요로 하는 카본 마이크로폰을 별도의 부가물 없이 1개의 접속단자를 통해 공용으로 사용할 수 있는 효과가 있다.As such, the present invention has the effect that a condenser microphone requiring a high voltage and a low current and a carbon microphone requiring a low voltage and high current can be used in common through one connection terminal without any additional additives.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900000830U KR950008185Y1 (en) | 1990-01-24 | 1990-01-24 | Power supplying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900000830U KR950008185Y1 (en) | 1990-01-24 | 1990-01-24 | Power supplying circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910014718U KR910014718U (en) | 1991-08-31 |
| KR950008185Y1 true KR950008185Y1 (en) | 1995-10-04 |
Family
ID=19295508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900000830U KR950008185Y1 (en) | 1990-01-24 | 1990-01-24 | Power supplying circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950008185Y1 (en) |
-
1990
- 1990-01-24 KR KR2019900000830U patent/KR950008185Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR910014718U (en) | 1991-08-31 |
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