JPS606342U - AFC circuit - Google Patents

AFC circuit

Info

Publication number
JPS606342U
JPS606342U JP9718883U JP9718883U JPS606342U JP S606342 U JPS606342 U JP S606342U JP 9718883 U JP9718883 U JP 9718883U JP 9718883 U JP9718883 U JP 9718883U JP S606342 U JPS606342 U JP S606342U
Authority
JP
Japan
Prior art keywords
circuit
component
resistor
frequency
afc circuit
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
JP9718883U
Other languages
Japanese (ja)
Other versions
JPH0221799Y2 (en
Inventor
三好　一秀
信好 立石
Original Assignee
富士通テン株式会社
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 by 富士通テン株式会社 filed Critical 富士通テン株式会社
Priority to JP9718883U priority Critical patent/JPS606342U/en
Publication of JPS606342U publication Critical patent/JPS606342U/en
Application granted granted Critical
Publication of JPH0221799Y2 publication Critical patent/JPH0221799Y2/ja
Granted legal-status Critical Current

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  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のＡＦＣ回路の一例を示す回路図、第２図
はその動作特性図、第３図は本考案の一実施例を示す回
路図、第４図は要部の説明図、第５図は定電圧回路の異
なる例を示す回路図である。 図中、１０は中間周波回路、１１に局部発振回路、１２
は定電圧回路、ＲＶはＡＦＣ幅調整用半固定抵抗である
。FIG. 1 is a circuit diagram showing an example of a conventional AFC circuit, FIG. 2 is a diagram of its operating characteristics, FIG. 3 is a circuit diagram showing an embodiment of the present invention, FIG. 4 is an explanatory diagram of the main parts, and FIG. FIG. 5 is a circuit diagram showing different examples of the constant voltage circuit. In the figure, 10 is an intermediate frequency circuit, 11 is a local oscillation circuit, and 12 is a local oscillation circuit.
is a constant voltage circuit, and RV is a semi-fixed resistor for AFC width adjustment.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 中間周波回路の検波出力の直流成分を一端に受けるＡＦ
Ｃ幅調整用抵抗と、該抵抗の他端に該直流成分の同調時
の値と等しい電圧を与える定電圧回路と、該抵抗の一部
から取り出した基準電圧で発振周波数が決定される局部
発振回路とを備え、該直流成分の変化を、該発振回路の
周波数を変化させて吸収するようにしてなることを特徴
とするＡＦＣ回路。AF that receives the DC component of the detection output of the intermediate frequency circuit at one end
A C width adjustment resistor, a constant voltage circuit that applies a voltage equal to the value at the time of tuning of the DC component to the other end of the resistor, and a local oscillation circuit whose oscillation frequency is determined by a reference voltage extracted from a part of the resistor. 1. An AFC circuit comprising: a circuit for absorbing changes in the DC component by changing the frequency of the oscillation circuit.
JP9718883U 1983-06-23 1983-06-23 AFC circuit Granted JPS606342U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9718883U JPS606342U (en) 1983-06-23 1983-06-23 AFC circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9718883U JPS606342U (en) 1983-06-23 1983-06-23 AFC circuit

Publications (2)

Publication Number Publication Date
JPS606342U true JPS606342U (en) 1985-01-17
JPH0221799Y2 JPH0221799Y2 (en) 1990-06-12

Family

ID=30231289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9718883U Granted JPS606342U (en) 1983-06-23 1983-06-23 AFC circuit

Country Status (1)

Country Link
JP (1) JPS606342U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55148234U (en) * 1980-04-17 1980-10-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55148234U (en) * 1980-04-17 1980-10-24

Also Published As

Publication number Publication date
JPH0221799Y2 (en) 1990-06-12

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