JPS6397971U - - Google Patents

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Publication number
JPS6397971U
JPS6397971U JP19248386U JP19248386U JPS6397971U JP S6397971 U JPS6397971 U JP S6397971U JP 19248386 U JP19248386 U JP 19248386U JP 19248386 U JP19248386 U JP 19248386U JP S6397971 U JPS6397971 U JP S6397971U
Authority
JP
Japan
Prior art keywords
circuit
tuning
tuner
variable capacitance
capacitance diode
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
JP19248386U
Other languages
Japanese (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 JP19248386U priority Critical patent/JPS6397971U/ja
Publication of JPS6397971U publication Critical patent/JPS6397971U/ja
Pending legal-status Critical Current

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  • Television Receiver Circuits (AREA)

Description

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

第１図は本考案のテレビジヨンチユーナの一実
施例を示す回路ブロツク図、第２図はその要部の
具体的な構成を示す回路図、第３図は第１図の要
部の動作を説明するための図、第４図はＲＦ波形
及び映像周波数特性を示す図である。 ７……ＶＩＦ・ＩＣ回路、１１……制御電圧発
生回路、Ｄ３……可変容量ダイオード。 Fig. 1 is a circuit block diagram showing an embodiment of the television tuner of the present invention, Fig. 2 is a circuit diagram showing the specific configuration of its main parts, and Fig. 3 is the operation of the main parts of Fig. 1. FIG. 4 is a diagram showing the RF waveform and video frequency characteristics. 7...VIF/IC circuit, 11...Control voltage generation circuit, D3 ...Variable capacitance diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 可変容量ダイオードを同調素子とするとともに
、ＶＩＦ回路を一体に備える電子同調チユーナに
おいて、前記ＶＩＦ回路から得られるバースト信
号のレベルを検出する回路を設け、この検出回路
の出力をチユーナの段間同調回路の可変容量ダイ
オードに印加されるチユーニング電圧に重畳する
ようにしたことを特徴とするテレビジヨンチユー
ナ。 In an electronic tuning tuner that uses a variable capacitance diode as a tuning element and is integrally equipped with a VIF circuit, a circuit for detecting the level of the burst signal obtained from the VIF circuit is provided, and the output of this detection circuit is sent to the interstage tuning circuit of the tuner. A television tuner characterized in that the tuning voltage is superimposed on the tuning voltage applied to the variable capacitance diode.
JP19248386U 1986-12-15 1986-12-15 Pending JPS6397971U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19248386U JPS6397971U (en) 1986-12-15 1986-12-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19248386U JPS6397971U (en) 1986-12-15 1986-12-15

Publications (1)

Publication Number Publication Date
JPS6397971U true JPS6397971U (en) 1988-06-24

Family

ID=31147604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19248386U Pending JPS6397971U (en) 1986-12-15 1986-12-15

Country Status (1)

Country Link
JP (1) JPS6397971U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556363A (en) * 1991-08-22 1993-03-05 Sharp Corp Receiver circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556363A (en) * 1991-08-22 1993-03-05 Sharp Corp Receiver circuit

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