[go: up one dir, main page]

JPS5242012A - Local oscillator for receivers - Google Patents

Local oscillator for receivers

Info

Publication number
JPS5242012A
JPS5242012A JP11720775A JP11720775A JPS5242012A JP S5242012 A JPS5242012 A JP S5242012A JP 11720775 A JP11720775 A JP 11720775A JP 11720775 A JP11720775 A JP 11720775A JP S5242012 A JPS5242012 A JP S5242012A
Authority
JP
Japan
Prior art keywords
local oscillator
receivers
afc
coverage
capacitor
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
JP11720775A
Other languages
Japanese (ja)
Inventor
Hiroyuki Kimura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11720775A priority Critical patent/JPS5242012A/en
Publication of JPS5242012A publication Critical patent/JPS5242012A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
    • H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To keep constant the coverage of AFC independently of frequency, by connecting coil and capacitor in parallel with variable capacitance diode for AFC of local oscillator.
JP11720775A 1975-09-30 1975-09-30 Local oscillator for receivers Pending JPS5242012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11720775A JPS5242012A (en) 1975-09-30 1975-09-30 Local oscillator for receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11720775A JPS5242012A (en) 1975-09-30 1975-09-30 Local oscillator for receivers

Publications (1)

Publication Number Publication Date
JPS5242012A true JPS5242012A (en) 1977-04-01

Family

ID=14706031

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11720775A Pending JPS5242012A (en) 1975-09-30 1975-09-30 Local oscillator for receivers

Country Status (1)

Country Link
JP (1) JPS5242012A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938863A (en) * 1972-08-16 1974-04-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938863A (en) * 1972-08-16 1974-04-11

Similar Documents

Publication Publication Date Title
CA951388A (en) Voltage-controlled variable frequency gunn-effect oscillator
JPS5242012A (en) Local oscillator for receivers
JPS52127147A (en) Phase cynchronizing oscillator
JPS527613A (en) Afc system
JPS51141514A (en) Synthesizer receiver
JPS52154304A (en) Frequency control unit
JPS5424516A (en) Ssb receiver
JPS52127737A (en) Oscillation circuit
JPS5419314A (en) Electronic tuner
JPS5375791A (en) Crystal oscillator
JPS54956A (en) Vco
JPS5286710A (en) Am-fm radio receiver
JPS535954A (en) Oscillator
JPS5413205A (en) Automatic channel tuner
JPS5238865A (en) Crystal oscillator
JPS51147106A (en) Auto-tuning receiver
JPS52127707A (en) Preset method electronic tuning receiver
JPS52119157A (en) Solid-state oscillator
JPS52132710A (en) Super heterodyne receivers
JPS5313814A (en) Compensating circuit for image interference rejection ratio
AU437860B2 (en) Superheterodyne receiver with resonant circuit tuning by means of capacitance diodes
JPS524153A (en) Pull-in circuit
JPS536507A (en) Receivers
AU245526B2 (en) Circuit arrangement for changing the oscillator frequency in uhf tuning apparatus, particularly for television receivers
JPS5357070A (en) Electronic watch