JPS5650617A - Adjusting control method of tuning circuit - Google Patents

Adjusting control method of tuning circuit

Info

Publication number
JPS5650617A
JPS5650617A JP12634279A JP12634279A JPS5650617A JP S5650617 A JPS5650617 A JP S5650617A JP 12634279 A JP12634279 A JP 12634279A JP 12634279 A JP12634279 A JP 12634279A JP S5650617 A JPS5650617 A JP S5650617A
Authority
JP
Japan
Prior art keywords
tuning circuit
circuit
control method
adjusting control
adjustment
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
JP12634279A
Other languages
Japanese (ja)
Inventor
Shigeo Tsuchiya
Seiji Yokoyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12634279A priority Critical patent/JPS5650617A/en
Publication of JPS5650617A publication Critical patent/JPS5650617A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes

Landscapes

  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To ensure an easy adjustment for the prescribed capacity variable range, by giving an adjustment to the inductance of the tuning coil in the state under which the varactor diode is cut off from the oscillating circuit and then connecting the varactor diode to the oscillation tuning circuit. CONSTITUTION:The varactor diode DO in the oscillation tuning circuit 21 is cut off at the point P, and an adjustment is given to the inductance of the tuning coil LO. After this, the diode VDO is connected to the circuit 21. As a result, the prescribed capacity variable range can be controlled easily.
JP12634279A 1979-10-02 1979-10-02 Adjusting control method of tuning circuit Pending JPS5650617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12634279A JPS5650617A (en) 1979-10-02 1979-10-02 Adjusting control method of tuning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12634279A JPS5650617A (en) 1979-10-02 1979-10-02 Adjusting control method of tuning circuit

Publications (1)

Publication Number Publication Date
JPS5650617A true JPS5650617A (en) 1981-05-07

Family

ID=14932785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12634279A Pending JPS5650617A (en) 1979-10-02 1979-10-02 Adjusting control method of tuning circuit

Country Status (1)

Country Link
JP (1) JPS5650617A (en)

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