GB648858A - Improvements in circuits for automatic frequency-correction - Google Patents

Improvements in circuits for automatic frequency-correction

Info

Publication number
GB648858A
GB648858A GB31854/47A GB3185447A GB648858A GB 648858 A GB648858 A GB 648858A GB 31854/47 A GB31854/47 A GB 31854/47A GB 3185447 A GB3185447 A GB 3185447A GB 648858 A GB648858 A GB 648858A
Authority
GB
United Kingdom
Prior art keywords
oscillator
frequency
spectrum
wave
discriminator
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.)
Expired
Application number
GB31854/47A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB648858A publication Critical patent/GB648858A/en
Expired 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
    • H03J7/047—Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal

Landscapes

  • Superheterodyne Receivers (AREA)
GB31854/47A 1946-12-05 1947-12-02 Improvements in circuits for automatic frequency-correction Expired GB648858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL648858X 1946-12-05

Publications (1)

Publication Number Publication Date
GB648858A true GB648858A (en) 1951-01-17

Family

ID=19791998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31854/47A Expired GB648858A (en) 1946-12-05 1947-12-02 Improvements in circuits for automatic frequency-correction

Country Status (2)

Country Link
GB (1) GB648858A (forum.php)
NL (1) NL74144C (forum.php)

Also Published As

Publication number Publication date
NL74144C (forum.php)

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