JPS568918A - Channel selector - Google Patents

Channel selector

Info

Publication number
JPS568918A
JPS568918A JP8463179A JP8463179A JPS568918A JP S568918 A JPS568918 A JP S568918A JP 8463179 A JP8463179 A JP 8463179A JP 8463179 A JP8463179 A JP 8463179A JP S568918 A JPS568918 A JP S568918A
Authority
JP
Japan
Prior art keywords
voltage
point
tuning
diode
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
JP8463179A
Other languages
Japanese (ja)
Inventor
Kenzo Muramatsu
Tadashi Oie
Takashi Matsubara
Osamu Yoshimi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8463179A priority Critical patent/JPS568918A/en
Publication of JPS568918A publication Critical patent/JPS568918A/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
    • H03J5/242—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 used exclusively for band selection
    • H03J5/244—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 used exclusively for band selection using electronic means

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To control the least upper bound and greatest lower bound of a tuning voltage of every band in accordance with the change-over state of a band switch for channels to be selected so that the tuning range of every band will not exceed fixed frequency range. CONSTITUTION:With a channel of the VHF high band selected via channel switch 3b, the greatest lower bound voltage from point B of tuning voltage control circuit 16H for the VHF high band is led to supply passage point A of tuning voltage BT by way of diode 19l, and the least upper bound voltage from point C is coupled with point A by way of diode 19h. When variable resistor 1b is preset to a voltage less than the greatest lower bound voltage of the tuning voltage for the VHF high band, diode 19l conducts to clamp the tuning voltage at point A to the greatest lower bound voltage and when a voltage exceeding the least upper bound voltage, diode 19h conducts to clamp it to the leas upper bound voltage.
JP8463179A 1979-07-04 1979-07-04 Channel selector Pending JPS568918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8463179A JPS568918A (en) 1979-07-04 1979-07-04 Channel selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8463179A JPS568918A (en) 1979-07-04 1979-07-04 Channel selector

Publications (1)

Publication Number Publication Date
JPS568918A true JPS568918A (en) 1981-01-29

Family

ID=13836025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8463179A Pending JPS568918A (en) 1979-07-04 1979-07-04 Channel selector

Country Status (1)

Country Link
JP (1) JPS568918A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693029U (en) * 1979-12-17 1981-07-24
US10760610B2 (en) 2015-06-18 2020-09-01 Bulten Ab Fastener

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029101A (en) * 1973-07-17 1975-03-25
JPS5315702A (en) * 1976-07-28 1978-02-14 Clarion Co Ltd Device for automatically switching tuning system for electronic tuning circuit
JPS5361201A (en) * 1976-11-12 1978-06-01 Sanyo Electric Co Ltd Channel selecting device for television picture receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029101A (en) * 1973-07-17 1975-03-25
JPS5315702A (en) * 1976-07-28 1978-02-14 Clarion Co Ltd Device for automatically switching tuning system for electronic tuning circuit
JPS5361201A (en) * 1976-11-12 1978-06-01 Sanyo Electric Co Ltd Channel selecting device for television picture receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693029U (en) * 1979-12-17 1981-07-24
JPS6138285Y2 (en) * 1979-12-17 1986-11-05
US10760610B2 (en) 2015-06-18 2020-09-01 Bulten Ab Fastener

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