GB673839A - Improvements in automatic frequency-control circuits for electric oscillation-generators - Google Patents

Improvements in automatic frequency-control circuits for electric oscillation-generators

Info

Publication number
GB673839A
GB673839A GB8055/49A GB805549A GB673839A GB 673839 A GB673839 A GB 673839A GB 8055/49 A GB8055/49 A GB 8055/49A GB 805549 A GB805549 A GB 805549A GB 673839 A GB673839 A GB 673839A
Authority
GB
United Kingdom
Prior art keywords
frequency
channels
condenser
amplitude
voltages
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
GB8055/49A
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 GB673839A publication Critical patent/GB673839A/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
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/20—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a harmonic phase-locked loop, i.e. a loop which can be locked to one of a number of harmonically related frequencies applied to it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • 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
    • 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
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
    • H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Ac-Ac Conversion (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
GB8055/49A 1948-03-27 1949-03-24 Improvements in automatic frequency-control circuits for electric oscillation-generators Expired GB673839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL673839X 1948-03-27

Publications (1)

Publication Number Publication Date
GB673839A true GB673839A (en) 1952-06-11

Family

ID=19802214

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8055/49A Expired GB673839A (en) 1948-03-27 1949-03-24 Improvements in automatic frequency-control circuits for electric oscillation-generators
GB6895/51A Expired GB688798A (en) 1948-03-27 1951-03-22 Improvements in or relating to automatic frequency-control circuits for electric oscillation-generators

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB6895/51A Expired GB688798A (en) 1948-03-27 1951-03-22 Improvements in or relating to automatic frequency-control circuits for electric oscillation-generators

Country Status (6)

Country Link
US (1) US2617037A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE488124A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE808961C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR983711A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB673839A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL85185C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752497A (en) * 1949-11-08 1956-06-26 Hartford Nat Bank & Trust Co Developing electrical oscillation
US2801282A (en) * 1951-11-30 1957-07-30 Rca Corp Oscillator synchronizing circuit
BE519977A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1952-05-17
DE1168480B (de) * 1952-12-31 1964-04-23 Gasaccumulator Svenska Ab Synchronisiereinrichtung, insbesondere fuer Fernsehempfaenger
US2930892A (en) * 1954-03-26 1960-03-29 Sperry Rand Corp Demodulator for a phase or frequency modulated signal
US2932793A (en) * 1956-11-20 1960-04-12 Marconi Wireless Telegraph Co Automatic frequency controlling systems
BE562554A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1956-11-20
US3041545A (en) * 1957-10-29 1962-06-26 Itt Time sensitivity variable gain amplifier
US2987679A (en) * 1957-11-13 1961-06-06 Rca Corp Automatic gain control circuit
DE1147257B (de) * 1959-09-17 1963-04-18 Blaupunkt Werke Gmbh Fernsehempfaenger mit einem nachstimm-baren Zeilenoszillator
DE1114531B (de) * 1959-10-07 1961-10-05 Blaupunkt Werke Gmbh Fernsehempfaenger mit einem sich selbsttaetig nachstimmenden Zeilenoszillator
US3327245A (en) * 1963-09-30 1967-06-20 Alfred Electronics Means and method for stabilizing negative feedback systems
US3363194A (en) * 1965-05-24 1968-01-09 Sylvania Electric Prod Phase lock loop with extended capture range
US3316497A (en) * 1965-07-09 1967-04-25 Robert R Brooks Phase controlled oscillator loop with variable passband filter
US3993958A (en) * 1975-08-20 1976-11-23 Rca Corporation Fast acquisition circuit for a phase locked loop

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR957645A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1942-11-03 1950-02-23

Also Published As

Publication number Publication date
BE488124A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR983711A (fr) 1951-06-27
NL85185C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE808961C (de) 1951-07-23
GB688798A (en) 1953-03-11
US2617037A (en) 1952-11-04

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