JPS58158531U - TV tuner for wideband reception - Google Patents

TV tuner for wideband reception

Info

Publication number
JPS58158531U
JPS58158531U JP1982054471U JP5447182U JPS58158531U JP S58158531 U JPS58158531 U JP S58158531U JP 1982054471 U JP1982054471 U JP 1982054471U JP 5447182 U JP5447182 U JP 5447182U JP S58158531 U JPS58158531 U JP S58158531U
Authority
JP
Japan
Prior art keywords
band
reception
coil
tuner
low
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
JP1982054471U
Other languages
Japanese (ja)
Other versions
JPH0129864Y2 (en
Inventor
松浦　修二
Original Assignee
シャープ株式会社
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 シャープ株式会社 filed Critical シャープ株式会社
Priority to JP1982054471U priority Critical patent/JPS58158531U/en
Publication of JPS58158531U publication Critical patent/JPS58158531U/en
Application granted granted Critical
Publication of JPH0129864Y2 publication Critical patent/JPH0129864Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (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 drawings]

第１図は従来の広帯域受信用テレビチューナのＶＪ−ｆ
Ｆ受信部の回路図、第２図ａ、　ｂ、　　ｃは同テレビ
チューナにおけるローハンド、ミドルバンド、ハイバン
ドの各バンド受信時の正規の等価回路図、第３図は同テ
レビチューナにおけるハイバンド受信時の実際の等価回
路図、第４図は本考案の１実施例の回路図である。　　
　・ Ｌｌ、　Ｌ２・・・・・・ハイバッド受信用コイル、Ｌ
３．Ｌ４・・・・・・ミドルパッド受信用コイル、ｋ＋
　Ｌ６・・・・・・ローバンド受信用コイル、Ｄ３〜Ｄ
７・・・・・・バンド切換用ダイオード、ＳＷｌ・・・
・・・バンド切換スイッチ、Ｄ、。 Ｄ２・・・・・・可変容量ダイオード、Ｄ８・・・・・
・ダイオード。Figure 1 shows the conventional wideband reception TV tuner VJ-f.
The circuit diagram of the F receiving section, Figures 2a, b, and c are the official equivalent circuit diagrams for low hand, middle band, and high band reception in the same TV tuner, and Figure 3 is the high band reception in the same TV tuner. FIG. 4 is a circuit diagram of one embodiment of the present invention.
・Ll, L2...High-bud reception coil, L
3. L4...Middle pad receiving coil, k+
L6...Low band receiving coil, D3~D
7...Band switching diode, SWl...
...Band selection switch, D. D2... Variable capacitance diode, D8...
·diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ハイバンド受信用コイル、ミドルバンド受信用コイル及
びローハンド受信用コイルを有し、バンド切換スイッチ
の切換動作に応動してバンド切換用ダイオードをオン・
オフ制御して各バンド受信用コイルを３段切換するもの
において、ノ１．イバンド受信時にローハンド受信用コ
イルを高周波的に短絡する手段を備えたことを特徴とす
る広帯域受信用テレビチューナ。It has a coil for high band reception, a coil for middle band reception, and a coil for low hand reception, and the band switching diode is turned on and off in response to the switching operation of the band switching switch.
In a device that performs off control and switches each band receiving coil in three stages, No. 1. A television tuner for wideband reception, characterized in that it is equipped with a means for short-circuiting a low-hand reception coil at high frequency when receiving an electronic band.
JP1982054471U 1982-04-14 1982-04-14 TV tuner for wideband reception Granted JPS58158531U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982054471U JPS58158531U (en) 1982-04-14 1982-04-14 TV tuner for wideband reception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982054471U JPS58158531U (en) 1982-04-14 1982-04-14 TV tuner for wideband reception

Publications (2)

Publication Number Publication Date
JPS58158531U true JPS58158531U (en) 1983-10-22
JPH0129864Y2 JPH0129864Y2 (en) 1989-09-12

Family

ID=30065088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982054471U Granted JPS58158531U (en) 1982-04-14 1982-04-14 TV tuner for wideband reception

Country Status (1)

Country Link
JP (1) JPS58158531U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6079831U (en) * 1983-11-04 1985-06-03 ソニー株式会社 Television tuner tuning circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6079831U (en) * 1983-11-04 1985-06-03 ソニー株式会社 Television tuner tuning circuit

Also Published As

Publication number Publication date
JPH0129864Y2 (en) 1989-09-12

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