JPS56114429A - Channel selection equipment - Google Patents

Channel selection equipment

Info

Publication number
JPS56114429A
JPS56114429A JP1806580A JP1806580A JPS56114429A JP S56114429 A JPS56114429 A JP S56114429A JP 1806580 A JP1806580 A JP 1806580A JP 1806580 A JP1806580 A JP 1806580A JP S56114429 A JPS56114429 A JP S56114429A
Authority
JP
Japan
Prior art keywords
resistance
switch
channel selection
lower limit
band
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
JP1806580A
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 JP1806580A priority Critical patent/JPS56114429A/en
Publication of JPS56114429A publication Critical patent/JPS56114429A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/246—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection using electronic means

Abstract

PURPOSE:To control the lower limit by means of a simple circuit, by connecting the parallel circuit of a resistance and a switch to the low potential side of a variable resistor for tuning, and opening the switch only when it is necessary to control the lower limit of the receivable frequency. CONSTITUTION:The channel selection part 4 is constituted of a band switching part 6 and a variable resistance 5 for channel selection. When the first switch S1 and the second switch S2 are switched, the prescribed voltage is applied to the tuner 1 from the resistance 5, and the selected band becomes receivable. When the switches S1, S2 have selected a VHF low band VL, the transistor 33 becomes off. Accordingly, in this case only, the resistance 31 is connected in series to the variable resistance 5, the lower limited voltage is set, and the lower limit of the receivable frequency is controlled.
JP1806580A 1980-02-14 1980-02-14 Channel selection equipment Pending JPS56114429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1806580A JPS56114429A (en) 1980-02-14 1980-02-14 Channel selection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1806580A JPS56114429A (en) 1980-02-14 1980-02-14 Channel selection equipment

Publications (1)

Publication Number Publication Date
JPS56114429A true JPS56114429A (en) 1981-09-09

Family

ID=11961271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1806580A Pending JPS56114429A (en) 1980-02-14 1980-02-14 Channel selection equipment

Country Status (1)

Country Link
JP (1) JPS56114429A (en)

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