JPS62198713U - - Google Patents

Info

Publication number
JPS62198713U
JPS62198713U JP8625086U JP8625086U JPS62198713U JP S62198713 U JPS62198713 U JP S62198713U JP 8625086 U JP8625086 U JP 8625086U JP 8625086 U JP8625086 U JP 8625086U JP S62198713 U JPS62198713 U JP S62198713U
Authority
JP
Japan
Prior art keywords
reception band
oscillation circuit
local oscillation
capacitance diode
frequency corresponding
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
JP8625086U
Other languages
English (en)
Other versions
JPH0648972Y2 (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 JP1986086250U priority Critical patent/JPH0648972Y2/ja
Publication of JPS62198713U publication Critical patent/JPS62198713U/ja
Application granted granted Critical
Publication of JPH0648972Y2 publication Critical patent/JPH0648972Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Filters And Equalizers (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Superheterodyne Receivers (AREA)

Description

【図面の簡単な説明】
第１図は、本考案に係る局部発振回路の実施例
を示す回路図、第２図及び第３図は、本考案に係
る局部発振回路のトラツキングエラー曲線を示す
図、第４図は、従来の局部発振回路を示す回路図
である。 １：半導体集積回路、２：局部発振回路、３：
同調電圧が供給される端子、４：切換信号が供給
される端子、ＣＳ１，ＣＳ２：並列容量素子、Ｃ
Ｐ１，ＣＰ２：パデングコンデンサ、Ｄ：可変容
量ダイオード、Ｑ１，Ｑ２：トランジスタ。

Claims (1)

    【実用新案登録請求の範囲】
  1. ＭＷ受信帯とＬＷ受持帯を具えたＡＭ受信機の
    局部発振回路に於いて、各受信帯に対応する発振
    周波数を得る局部発振回路が発振用コイルと可変
    容量ダイオードを供用し、且つ該可変容量ダイオ
    ードのアノード側に並列容量素子が接続され、該
    可変容量ダイオードのカソード側にパデイングコ
    ンデンサが接続され、該並列容量素子と該パデイ
    ングコンデンサの容量を切り換えることによつて
    、ＭＷ受信帯とＬＷ受信帯に対応する発振周波数
    を得ることを特徴とする局部発振回路。
JP1986086250U 1986-06-06 1986-06-06 局部発振回路 Expired - Lifetime JPH0648972Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986086250U JPH0648972Y2 (ja) 1986-06-06 1986-06-06 局部発振回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986086250U JPH0648972Y2 (ja) 1986-06-06 1986-06-06 局部発振回路

Publications (2)

Publication Number Publication Date
JPS62198713U true JPS62198713U (ja) 1987-12-17
JPH0648972Y2 JPH0648972Y2 (ja) 1994-12-12

Family

ID=30942389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986086250U Expired - Lifetime JPH0648972Y2 (ja) 1986-06-06 1986-06-06 局部発振回路

Country Status (1)

Country Link
JP (1) JPH0648972Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922449A (ja) * 1982-07-28 1984-02-04 Matsushita Electric Ind Co Ltd 発振装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922449A (ja) * 1982-07-28 1984-02-04 Matsushita Electric Ind Co Ltd 発振装置

Also Published As

Publication number Publication date
JPH0648972Y2 (ja) 1994-12-12

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