KR960009390A - Automatic Gain Control Circuit Using Photocoupler - Google Patents
Automatic Gain Control Circuit Using Photocoupler Download PDFInfo
- Publication number
- KR960009390A KR960009390A KR1019940021368A KR19940021368A KR960009390A KR 960009390 A KR960009390 A KR 960009390A KR 1019940021368 A KR1019940021368 A KR 1019940021368A KR 19940021368 A KR19940021368 A KR 19940021368A KR 960009390 A KR960009390 A KR 960009390A
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- KR
- South Korea
- Prior art keywords
- circuit
- signal
- amplifying
- photocoupler
- gain control
- Prior art date
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Abstract
본 발명은 포토커플러를 이용한 자동이득 제어회로(AGC)에 관한 것으로, 특히 아날로그 주파수 전송선로의 손실을 고속으로 보상해 줄 수 있는 포토커플러를 이용한 자동이득조절회로에 관한 것이다.The present invention relates to an automatic gain control circuit (AGC) using a photocoupler, and more particularly, to an automatic gain control circuit using a photocoupler capable of compensating for the loss of an analog frequency transmission line at high speed.
본 발명의 포토커플러를 이용한 자동이득 제어회로는 전송로로부터 입력신호를 받아들이기 위한 변환 트랜스포머(210)와, 상기 변환 트랜스포머(210)를 통해 입력된 입력신호를 일정향 만큼 증폭시켜 출력하기 위한 메인 증폭회로(220)와, 상기 메인 증폭회로(220)의 저항 하이브리드를 통해 분기된 증폭출력으로부터 파일럿 주파수 성분을 검출하여 출력하는 파일럿 주파수 검출필터(230)와, 상기 파일럿 주파수 성분신호를 증폭하기 위한 증폭회로(240)와, 상기 증폭된 신호로부터 이에 비례한 직류 신호를 검출하는 직류검출회로(250)와, 상기 직류 검출회로(250)의 직류신호가 인가되는 히터(24A)와 상기 히터(25A)의 발명에 반비례하는 저항특성을 갖고 상기 메인증폭회로(220)의 부궤환 회로에 삽입되는 비이드(28B)를 구비한 포토커플러(260)로 구성된다.The automatic gain control circuit using the photocoupler of the present invention is a main transformer for amplifying and outputting a conversion transformer 210 for receiving an input signal from a transmission path and an input signal input through the conversion transformer 210 by a predetermined direction. An amplification circuit 220, a pilot frequency detection filter 230 for detecting and outputting a pilot frequency component from the amplified output branched through the resistance hybrid of the main amplifying circuit 220, and for amplifying the pilot frequency component signal. An amplification circuit 240, a DC detection circuit 250 for detecting a DC signal proportional to the amplified signal, a heater 24A to which a DC signal of the DC detection circuit 250 is applied, and the heater 25A. And a photocoupler 260 having a resistance characteristic inversely proportional to the invention and having a bead 28B inserted into the negative feedback circuit of the main amplifier circuit 220.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 본 발명에 따른 포토커플러를 이용한 자동이득 제어회로의 블럭도.3 is a block diagram of an automatic gain control circuit using a photocoupler according to the present invention.
제4도는 제3도의 DC검출회로에 대한 상세회로도이다.4 is a detailed circuit diagram of the DC detection circuit of FIG.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940021368A KR960009390A (en) | 1994-08-29 | 1994-08-29 | Automatic Gain Control Circuit Using Photocoupler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940021368A KR960009390A (en) | 1994-08-29 | 1994-08-29 | Automatic Gain Control Circuit Using Photocoupler |
Publications (1)
Publication Number | Publication Date |
---|---|
KR960009390A true KR960009390A (en) | 1996-03-22 |
Family
ID=66686904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940021368A KR960009390A (en) | 1994-08-29 | 1994-08-29 | Automatic Gain Control Circuit Using Photocoupler |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR960009390A (en) |
-
1994
- 1994-08-29 KR KR1019940021368A patent/KR960009390A/en not_active Application Discontinuation
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Legal Events
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WITN | Withdrawal due to no request for examination |