JPS5730409A - Electronic tuner - Google Patents

Electronic tuner

Info

Publication number
JPS5730409A
JPS5730409A JP10540880A JP10540880A JPS5730409A JP S5730409 A JPS5730409 A JP S5730409A JP 10540880 A JP10540880 A JP 10540880A JP 10540880 A JP10540880 A JP 10540880A JP S5730409 A JPS5730409 A JP S5730409A
Authority
JP
Japan
Prior art keywords
coaxial resonator
varactor diode
diode
electronic tuner
anode
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
JP10540880A
Other languages
Japanese (ja)
Other versions
JPH0114727B2 (en
Inventor
Shinpachi Nakajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsumi Electric Co Ltd
Original Assignee
Mitsumi Electric Co Ltd
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 Mitsumi Electric Co Ltd filed Critical Mitsumi Electric Co Ltd
Priority to JP10540880A priority Critical patent/JPS5730409A/en
Publication of JPS5730409A publication Critical patent/JPS5730409A/en
Publication of JPH0114727B2 publication Critical patent/JPH0114727B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
    • H03G1/0029—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier using FETs

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To improve the AGC characteristics, by giving a specified arrangement for a coaxial resonator and a varactor diode. CONSTITUTION:The drain of a FETQ1 is connected to a connecting point between a coaxial resonator 11 and a capacitor 29 in series with a coil 27 and a capacitor 28, and another terminal of the coaxial resonator 11 is connected to the cathode of a varactor diode 12'. The anode of the varactor diode 12' is connected to the anode of a varactor diode 17' and the anodes are grounded. The cathode of the diode 17' is connected to one end of a coaxial resonator 16.
JP10540880A 1980-07-31 1980-07-31 Electronic tuner Granted JPS5730409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10540880A JPS5730409A (en) 1980-07-31 1980-07-31 Electronic tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10540880A JPS5730409A (en) 1980-07-31 1980-07-31 Electronic tuner

Publications (2)

Publication Number Publication Date
JPS5730409A true JPS5730409A (en) 1982-02-18
JPH0114727B2 JPH0114727B2 (en) 1989-03-14

Family

ID=14406779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10540880A Granted JPS5730409A (en) 1980-07-31 1980-07-31 Electronic tuner

Country Status (1)

Country Link
JP (1) JPS5730409A (en)

Also Published As

Publication number Publication date
JPH0114727B2 (en) 1989-03-14

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