JPS6095750U - Electronic tuner input circuit - Google Patents

Electronic tuner input circuit

Info

Publication number
JPS6095750U
JPS6095750U JP18958183U JP18958183U JPS6095750U JP S6095750 U JPS6095750 U JP S6095750U JP 18958183 U JP18958183 U JP 18958183U JP 18958183 U JP18958183 U JP 18958183U JP S6095750 U JPS6095750 U JP S6095750U
Authority
JP
Japan
Prior art keywords
coil
switching
high frequency
electronic tuner
low channel
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.)
Pending
Application number
JP18958183U
Other languages
Japanese (ja)
Inventor
彰 田辺
Original Assignee
関西日本電気株式会社
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 関西日本電気株式会社 filed Critical 関西日本電気株式会社
Priority to JP18958183U priority Critical patent/JPS6095750U/en
Publication of JPS6095750U publication Critical patent/JPS6095750U/en
Pending legal-status Critical Current

Links

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 drawings]

第１図は従来の電子チューナ入力部回路図、第２図は第
１図のローチャンネルバンド受信時の部分的等価回路図
、第３図は同じくハイチキンネルバンド受信時の部分的
等価回路図、第４図は本考案に係る電子チューナの入力
回路図、及び第５図は第４図のハイチャンネル受信時の
部分的等価回　　　［略図である。 ３・・・入力同調回路、６，９・・・ハイチャンネルコ
イル、７，８・・・ローチャンネルコイル、１３・・・
可変容量ダイオード、１４・・・バンド切換用スイッチ
ングダイオード、１７・・・入力側コイル、２０・・・
直流阻止用コンデンサ、２１・・・第２のスイッチング
ダイオード、２２．２３・・＝スイッチング安定化抵抗
。Figure 1 is a circuit diagram of a conventional electronic tuner input section, Figure 2 is a partial equivalent circuit diagram when receiving the low channel band of Figure 1, and Figure 3 is a partial equivalent circuit diagram when receiving the high channel band. , FIG. 4 is an input circuit diagram of the electronic tuner according to the present invention, and FIG. 5 is a partial equivalent circuit diagram of FIG. 4 when receiving a high channel. 3... Input tuning circuit, 6, 9... High channel coil, 7, 8... Low channel coil, 13...
Variable capacitance diode, 14... Switching diode for band switching, 17... Input side coil, 20...
DC blocking capacitor, 21...second switching diode, 22.23...=switching stabilizing resistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ハイチャンネル主コイル、ローチャンネル主コイル、ロ
ーチャンネル副コイル及びハイチャンネル副コイルを順
次高周波的に直列接続した同調用コイル装置、このコイ
ル装置に高周波的に並列接続した同調用可変容量ダイオ
ード、及び前記ローチャンネル主コイルと副コイルの直
列回路に高周波的に並列接続したバンド切換用゛スイッ
チングダイオードを具備する２バンド式電子チューナに
おいて、第２のスイッチングダイオードを前記ローチャ
ンネル主コイル、又は前記ローチャンネル副コイルと高
周波的に並列接続して付設すると共にこの第２のスイッ
チングダイオードに前記バンド切換用スイッチングダイ
オードを駆動するスイッチング電圧を印加して両スイッ
チングダイオードを０Ｎ−ＯＦＦさせることを特徴とす
る電子チューナの入力回路。A tuning coil device in which a high channel main coil, a low channel main coil, a low channel sub coil and a high channel sub coil are sequentially connected in series at high frequency; a tuning variable capacitance diode connected in parallel at high frequency to this coil device; In a two-band electronic tuner equipped with a switching diode for band switching connected in parallel at high frequency to a series circuit of a low channel main coil and a sub coil, a second switching diode is connected to the low channel main coil or the low channel sub coil. An electronic tuner characterized in that the second switching diode is connected in parallel with the coil in high frequency and a switching voltage for driving the band switching switching diode is applied to the second switching diode to turn both switching diodes ON-OFF. input circuit.
JP18958183U 1983-12-07 1983-12-07 Electronic tuner input circuit Pending JPS6095750U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18958183U JPS6095750U (en) 1983-12-07 1983-12-07 Electronic tuner input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18958183U JPS6095750U (en) 1983-12-07 1983-12-07 Electronic tuner input circuit

Publications (1)

Publication Number Publication Date
JPS6095750U true JPS6095750U (en) 1985-06-29

Family

ID=30408706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18958183U Pending JPS6095750U (en) 1983-12-07 1983-12-07 Electronic tuner input circuit

Country Status (1)

Country Link
JP (1) JPS6095750U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5521400U (en) * 1978-07-31 1980-02-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5521400U (en) * 1978-07-31 1980-02-12

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