GB644623A - Improvements in or relating to automatic frequency-correction circuit-arrangements - Google Patents

Improvements in or relating to automatic frequency-correction circuit-arrangements

Info

Publication number
GB644623A
GB644623A GB34400/47A GB3440047A GB644623A GB 644623 A GB644623 A GB 644623A GB 34400/47 A GB34400/47 A GB 34400/47A GB 3440047 A GB3440047 A GB 3440047A GB 644623 A GB644623 A GB 644623A
Authority
GB
United Kingdom
Prior art keywords
frequency
phase
beat
fed
sense
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
GB34400/47A
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 GB644623A publication Critical patent/GB644623A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB34400/47A 1946-12-31 1947-12-29 Improvements in or relating to automatic frequency-correction circuit-arrangements Expired GB644623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL644623X 1946-12-31

Publications (1)

Publication Number Publication Date
GB644623A true GB644623A (en) 1950-10-11

Family

ID=19791880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34400/47A Expired GB644623A (en) 1946-12-31 1947-12-29 Improvements in or relating to automatic frequency-correction circuit-arrangements

Country Status (6)

Country Link
US (1) US2540333A (forum.php)
BE (1) BE479024A (forum.php)
DE (1) DE821804C (forum.php)
FR (1) FR958065A (forum.php)
GB (1) GB644623A (forum.php)
NL (1) NL69917C (forum.php)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL148898B (nl) * 1949-09-24 Rhone Poulenc Sa Werkwijze ter bereiding van pyrrolo (3,4-b) pyrazinederivaten, de zuuradditiezouten en farmaceutische preparaten die deze verbindingen bevatten.
US2839960A (en) * 1949-12-30 1958-06-24 Baldwin Piano Co Electronic synchronizing system for producing pitch discs and the like
US2747089A (en) * 1951-06-22 1956-05-22 Rca Corp Monostable oscillator control
NL89589C (forum.php) * 1952-05-17
US2972660A (en) * 1952-09-03 1961-02-21 Moore And Hall Frequency adjustment system
BE525854A (forum.php) * 1953-01-21
US2714697A (en) * 1953-04-02 1955-08-02 Donald C Small 3-phase, rc, variable voltage, variable frequency oscillator for electric motor
US2812431A (en) * 1953-12-23 1957-11-05 Zenith Radio Corp Receiver a. f. c. system using a. c. amplification and d. c. reinsertion in the feedback loop
US2946884A (en) * 1954-10-08 1960-07-26 Bell Telephone Labor Inc Automatic frequency control for radio receiver
US3143628A (en) * 1961-12-11 1964-08-04 Caterpillar Tractor Co Two turn inductor block with integral quench
DE1271212B (de) * 1964-04-15 1968-06-27 Telefunken Patent Verfahren zur Frequenzregelung mehrerer Oszillatoren und Anordnung zur Durchfuehrungdes Verfahrens
DE1270128B (de) * 1964-08-20 1968-06-12 Siemens Ag Einrichtung fuer die Frequenzkontrolle eines freischwingenden Hochfrequenzgenerators
US3748590A (en) * 1972-04-14 1973-07-24 Singer Co Sine cosine frequency tracker
GB1456453A (en) * 1974-01-31 1976-11-24 Ibm Phase locked oscillators
US4206425A (en) * 1978-08-29 1980-06-03 Rca Corporation Digitized frequency synthesizer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296919A (en) * 1940-07-17 1942-09-29 Rca Corp Direct-current insertion

Also Published As

Publication number Publication date
BE479024A (forum.php)
NL69917C (forum.php)
US2540333A (en) 1951-02-06
DE821804C (de) 1951-11-22
FR958065A (forum.php) 1950-03-03

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