JPS60172429U - Tuning control circuit - Google Patents

Tuning control circuit

Info

Publication number
JPS60172429U
JPS60172429U JP6043584U JP6043584U JPS60172429U JP S60172429 U JPS60172429 U JP S60172429U JP 6043584 U JP6043584 U JP 6043584U JP 6043584 U JP6043584 U JP 6043584U JP S60172429 U JPS60172429 U JP S60172429U
Authority
JP
Japan
Prior art keywords
variable capacitance
capacitance diode
bias voltage
control circuit
tuning control
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
JP6043584U
Other languages
Japanese (ja)
Other versions
JPH032995Y2 (en
Inventor
原田　英夫
Original Assignee
ソニー株式会社
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 ソニー株式会社 filed Critical ソニー株式会社
Priority to JP6043584U priority Critical patent/JPS60172429U/en
Publication of JPS60172429U publication Critical patent/JPS60172429U/en
Application granted granted Critical
Publication of JPH032995Y2 publication Critical patent/JPH032995Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Electronic Switches (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) [Abstract] 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図は従来の半導体スイッチング素子を伴う同調制御
回路を示す回路接続図、第２図は本考案に係る同調制御
回路の一例を示す回路接続図である。 図中、２１はアンテナ、２３はコイル、２６は可変容量
ダイオード、２９は制御端子、３２はダイオード、３３
及び３９はトランジスタ、Ｖｂは　　　□バイアス電圧
、ｖｔ’は選局制御電圧、Ｖｘ’は制御電圧である。FIG. 1 is a circuit connection diagram showing a conventional tuning control circuit with semiconductor switching elements, and FIG. 2 is a circuit connection diagram showing an example of a tuning control circuit according to the present invention. In the figure, 21 is an antenna, 23 is a coil, 26 is a variable capacitance diode, 29 is a control terminal, 32 is a diode, 33
and 39 are transistors, Vb is a bias voltage, vt' is a channel selection control voltage, and Vx' is a control voltage.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 誘導性素子と可変容量ダイオードを含む容量性素子とが
共振回路を形成し得るように接続され、上記可変容量ダ
イオードに逆方向バイアス電圧を与える第１の制御電圧
供給部が接続されるとともに、上記可変容量ダイオード
に順方向バイアス電圧を与える第２の制御電圧供給部と
スイッチング素子とが設けられ、上記スイッチング素子
のオン・オフ状態に応じて、上記可変容量ダイオードに
逆方向バイアス電圧が供給されて共振回路が形成される
状態と上記可変容量ダイオードに順方向バイアス電圧が
供給されて共振回路が形成されない状態とが、選択的に
とられるようにされた同調制御回路。An inductive element and a capacitive element including a variable capacitance diode are connected to form a resonant circuit, and a first control voltage supply section that applies a reverse bias voltage to the variable capacitance diode is connected to the capacitive element. A second control voltage supply section and a switching element are provided for applying a forward bias voltage to the variable capacitance diode, and a reverse bias voltage is supplied to the variable capacitance diode according to an on/off state of the switching element. A tuning control circuit configured to selectively take a state in which a resonant circuit is formed and a state in which a forward bias voltage is supplied to the variable capacitance diode and a resonant circuit is not formed.
JP6043584U 1984-04-24 1984-04-24 Tuning control circuit Granted JPS60172429U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6043584U JPS60172429U (en) 1984-04-24 1984-04-24 Tuning control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6043584U JPS60172429U (en) 1984-04-24 1984-04-24 Tuning control circuit

Publications (2)

Publication Number Publication Date
JPS60172429U true JPS60172429U (en) 1985-11-15
JPH032995Y2 JPH032995Y2 (en) 1991-01-25

Family

ID=30587780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6043584U Granted JPS60172429U (en) 1984-04-24 1984-04-24 Tuning control circuit

Country Status (1)

Country Link
JP (1) JPS60172429U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693046U (en) * 1979-12-17 1981-07-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693046U (en) * 1979-12-17 1981-07-24

Also Published As

Publication number Publication date
JPH032995Y2 (en) 1991-01-25

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