GB641543A - Improvements in or relating to frequency-modulation circuits - Google Patents

Improvements in or relating to frequency-modulation circuits

Info

Publication number
GB641543A
GB641543A GB20021/46A GB2002146A GB641543A GB 641543 A GB641543 A GB 641543A GB 20021/46 A GB20021/46 A GB 20021/46A GB 2002146 A GB2002146 A GB 2002146A GB 641543 A GB641543 A GB 641543A
Authority
GB
United Kingdom
Prior art keywords
valve
anode
oscillator
modulator
condenser
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
GB20021/46A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken 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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB641543A publication Critical patent/GB641543A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Superheterodyne Receivers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB20021/46A 1942-06-30 1946-07-04 Improvements in or relating to frequency-modulation circuits Expired GB641543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL247881X 1942-06-30

Publications (1)

Publication Number Publication Date
GB641543A true GB641543A (en) 1950-08-16

Family

ID=19780930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20021/46A Expired GB641543A (en) 1942-06-30 1946-07-04 Improvements in or relating to frequency-modulation circuits

Country Status (6)

Country Link
US (1) US2541649A (enrdf_load_stackoverflow)
BE (1) BE451284A (enrdf_load_stackoverflow)
CH (1) CH247881A (enrdf_load_stackoverflow)
FR (1) FR895914A (enrdf_load_stackoverflow)
GB (1) GB641543A (enrdf_load_stackoverflow)
NL (1) NL64026C (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977095C (de) * 1950-03-07 1965-01-28 Siemens Ag Elektrischer Zweipol in einer Schaltung fuer Frequenzmodulation, Frequenznachstellung oder den Abgleich von Messbrueckenanordnungen
US2666182A (en) * 1950-09-19 1954-01-12 Rca Corp Frequency control apparatus
US2857573A (en) * 1953-05-22 1958-10-21 Rca Corp Frequency modulated transistor oscillator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1777410A (en) * 1928-03-06 1930-10-07 Lester L Jones Variable relay condenser
US2351368A (en) * 1942-06-03 1944-06-13 Rca Corp Reactance tube
US2350171A (en) * 1942-06-19 1944-05-30 Rca Corp Reactance controlled generator

Also Published As

Publication number Publication date
FR895914A (fr) 1945-02-07
NL64026C (enrdf_load_stackoverflow) 1900-01-01
US2541649A (en) 1951-02-13
BE451284A (enrdf_load_stackoverflow)
CH247881A (de) 1947-03-31

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