JPS53130910A - Local injection circuit - Google Patents

Local injection circuit

Info

Publication number
JPS53130910A
JPS53130910A JP4609877A JP4609877A JPS53130910A JP S53130910 A JPS53130910 A JP S53130910A JP 4609877 A JP4609877 A JP 4609877A JP 4609877 A JP4609877 A JP 4609877A JP S53130910 A JPS53130910 A JP S53130910A
Authority
JP
Japan
Prior art keywords
injection circuit
local injection
tuner
injected
receiver
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
JP4609877A
Other languages
Japanese (ja)
Inventor
Kiichi Yamamoto
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP4609877A priority Critical patent/JPS53130910A/en
Publication of JPS53130910A publication Critical patent/JPS53130910A/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

  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To enable for a local signal to the mixer circuit to be injected for the entire band with almost a given level, by using varactor diodes in the tuner of a TV receiver.
JP4609877A 1977-04-20 1977-04-20 Local injection circuit Pending JPS53130910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4609877A JPS53130910A (en) 1977-04-20 1977-04-20 Local injection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4609877A JPS53130910A (en) 1977-04-20 1977-04-20 Local injection circuit

Publications (1)

Publication Number Publication Date
JPS53130910A true JPS53130910A (en) 1978-11-15

Family

ID=12737508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4609877A Pending JPS53130910A (en) 1977-04-20 1977-04-20 Local injection circuit

Country Status (1)

Country Link
JP (1) JPS53130910A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5583350A (en) * 1978-12-20 1980-06-23 Sanyo Electric Co Ltd Gain compensation circuit of tuner
JPS6268340U (en) * 1985-10-18 1987-04-28
JPS62272703A (en) * 1986-05-21 1987-11-26 Matsushita Electric Ind Co Ltd Measuring method for frequency conversion circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5583350A (en) * 1978-12-20 1980-06-23 Sanyo Electric Co Ltd Gain compensation circuit of tuner
JPS6268340U (en) * 1985-10-18 1987-04-28
JPS62272703A (en) * 1986-05-21 1987-11-26 Matsushita Electric Ind Co Ltd Measuring method for frequency conversion circuit

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