JPS62198732U - - Google Patents

Info

Publication number
JPS62198732U
JPS62198732U JP1986086059U JP8605986U JPS62198732U JP S62198732 U JPS62198732 U JP S62198732U JP 1986086059 U JP1986086059 U JP 1986086059U JP 8605986 U JP8605986 U JP 8605986U JP S62198732 U JPS62198732 U JP S62198732U
Authority
JP
Japan
Prior art keywords
pilot signal
rectifier circuit
circuit
gain
changing
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.)
Granted
Application number
JP1986086059U
Other languages
English (en)
Other versions
JPH0735462Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1986086059U priority Critical patent/JPH0735462Y2/ja
Publication of JPS62198732U publication Critical patent/JPS62198732U/ja
Application granted granted Critical
Publication of JPH0735462Y2 publication Critical patent/JPH0735462Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Optical Communication System (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例のAGC回路の回路
図、第2図は従来のAGC回路の回路図、第3図
aはパイロツト信号が重畳された画像信号の一例
の波形図、第3図bは第3図aの波形の上下がリ
ミツトされた波形図、第3図cは従来例における
整流回路の出力波形図、第4図は本考案における
整流回路の出力波形図である。 1……アバランシエフオトダイオード、2……
増幅器、3……出力端子、4……帯域波器、5
……パイロツト信号増幅器、6,9……コンデン
サ、7,8……ダイオード、10……負荷抵抗器
、11……基準電圧、12……誤差増幅器、13
……低域波器、14……高圧発生回路、15…
…FET、16,17……可変抵抗器。

Claims (1)

    【実用新案登録請求の範囲】
  1. パイロツト信号のレベルが一定になるようにA
    GC可変素子の利得を制御するAGC回路におい
    て、パイロツト信号の整流回路の負荷インピーダ
    ンスを整流回路の整流電圧によつて変化させる装
    置を備えたことを特徴とするAGC回路。
JP1986086059U 1986-06-07 1986-06-07 Agc回路 Expired - Lifetime JPH0735462Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986086059U JPH0735462Y2 (ja) 1986-06-07 1986-06-07 Agc回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986086059U JPH0735462Y2 (ja) 1986-06-07 1986-06-07 Agc回路

Publications (2)

Publication Number Publication Date
JPS62198732U true JPS62198732U (ja) 1987-12-17
JPH0735462Y2 JPH0735462Y2 (ja) 1995-08-09

Family

ID=30942023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986086059U Expired - Lifetime JPH0735462Y2 (ja) 1986-06-07 1986-06-07 Agc回路

Country Status (1)

Country Link
JP (1) JPH0735462Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588459A (en) * 1978-12-25 1980-07-04 Fujitsu Ltd Signal demodulation circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588459A (en) * 1978-12-25 1980-07-04 Fujitsu Ltd Signal demodulation circuit

Also Published As

Publication number Publication date
JPH0735462Y2 (ja) 1995-08-09

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