JPS56162525A - Tuner - Google Patents

Tuner

Info

Publication number
JPS56162525A
JPS56162525A JP6676680A JP6676680A JPS56162525A JP S56162525 A JPS56162525 A JP S56162525A JP 6676680 A JP6676680 A JP 6676680A JP 6676680 A JP6676680 A JP 6676680A JP S56162525 A JPS56162525 A JP S56162525A
Authority
JP
Japan
Prior art keywords
tuning
voltage
tuner
band change
over
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
JP6676680A
Other languages
Japanese (ja)
Inventor
Isao Fujimoto
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP6676680A priority Critical patent/JPS56162525A/en
Publication of JPS56162525A publication Critical patent/JPS56162525A/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

Abstract

PURPOSE:To make accurate adjustments easily by equipping a tuner with a tuning- voltage regulation part and by limiting a receivable frequency range by upper- and lower-limit voltages outputted from the regulation part. CONSTITUTION:The 1st local oscillators 21 and 22 of a tuner 1 are applied with prescribed tuning voltages and a channel selection part 4 is also applied with band change-over signals for the UHF range, high VHF range and low VHF range. This channel selection part 4 responds to band change-over operation to output a band change-over signal from a band change-over part 41 to a prescribed terminal, and also responds to channel-selecting operation to output a prescribed tuning voltage from a tuning part 42. With an output voltage from a tuning-voltage regulation part 5 fitted near the tuning-voltage application terminal 6 of the tuner 1, the upper limit and lower limit of the tuning voltage are regulated. Consequently, the tuner makes adjustments by itself to facilitate accurate adjustments.
JP6676680A 1980-05-19 1980-05-19 Tuner Pending JPS56162525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6676680A JPS56162525A (en) 1980-05-19 1980-05-19 Tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6676680A JPS56162525A (en) 1980-05-19 1980-05-19 Tuner

Publications (1)

Publication Number Publication Date
JPS56162525A true JPS56162525A (en) 1981-12-14

Family

ID=13325323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6676680A Pending JPS56162525A (en) 1980-05-19 1980-05-19 Tuner

Country Status (1)

Country Link
JP (1) JPS56162525A (en)

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