JPS5698032A - Television tuner - Google Patents

Television tuner

Info

Publication number
JPS5698032A
JPS5698032A JP52180A JP52180A JPS5698032A JP S5698032 A JPS5698032 A JP S5698032A JP 52180 A JP52180 A JP 52180A JP 52180 A JP52180 A JP 52180A JP S5698032 A JPS5698032 A JP S5698032A
Authority
JP
Japan
Prior art keywords
vhf
power
diode
supplied
uhf
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
JP52180A
Other languages
Japanese (ja)
Inventor
Joji Nagai
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 JP52180A priority Critical patent/JPS5698032A/en
Publication of JPS5698032A publication Critical patent/JPS5698032A/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

  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To make the diode forming an OR circuit double a switching diode, by forming the power source to the VHF mixing circuit into the one which secured an OR of the VHF/UHF switching power source. CONSTITUTION:With connection of the switch 14 to the side of the VHF power supply terminal Bv, the power supply is given to the VHFRF.AMP1, VHFOSC3 and VHFMIX2 to receive the VHF. No power is supplied to the UHF side by the diode 12. When the switch 14 is connected to the UHF power supply terminal Bu, the power is supplied to the UHFRF.AMP4, UHFMIX5, UHFOSC6 and VHFNIX2 each. Then the VHFMIX2 functions as the intermediate frequency amplifier. No power is supplied to other VHF circuits through the diode 11.
JP52180A 1980-01-09 1980-01-09 Television tuner Pending JPS5698032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52180A JPS5698032A (en) 1980-01-09 1980-01-09 Television tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52180A JPS5698032A (en) 1980-01-09 1980-01-09 Television tuner

Publications (1)

Publication Number Publication Date
JPS5698032A true JPS5698032A (en) 1981-08-07

Family

ID=11476065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52180A Pending JPS5698032A (en) 1980-01-09 1980-01-09 Television tuner

Country Status (1)

Country Link
JP (1) JPS5698032A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4420580Y1 (en) * 1967-05-10 1969-09-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4420580Y1 (en) * 1967-05-10 1969-09-03

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