FR973737A - Circuit de modulation de fréquence, particulièrement pour oscillateur du type résistance-capacité - Google Patents

Circuit de modulation de fréquence, particulièrement pour oscillateur du type résistance-capacité

Info

Publication number
FR973737A
FR973737A FR973737DA FR973737A FR 973737 A FR973737 A FR 973737A FR 973737D A FR973737D A FR 973737DA FR 973737 A FR973737 A FR 973737A
Authority
FR
France
Prior art keywords
resistor
frequency modulation
modulation circuit
capacitor type
type oscillator
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
Other languages
English (en)
Inventor
Evert Manuel Ostlund
Martin Silver
Antonio Ramon Vallarino
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR973737A publication Critical patent/FR973737A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/24—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
FR973737D 1947-10-21 1948-10-15 Circuit de modulation de fréquence, particulièrement pour oscillateur du type résistance-capacité Expired FR973737A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US781164A US2516906A (en) 1947-10-21 1947-10-21 Resistance modulator for frequency modulation

Publications (1)

Publication Number Publication Date
FR973737A true FR973737A (fr) 1951-02-14

Family

ID=25121894

Family Applications (1)

Application Number Title Priority Date Filing Date
FR973737D Expired FR973737A (fr) 1947-10-21 1948-10-15 Circuit de modulation de fréquence, particulièrement pour oscillateur du type résistance-capacité

Country Status (3)

Country Link
US (1) US2516906A (fr)
BE (1) BE485401A (fr)
FR (1) FR973737A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666851A (en) * 1946-11-11 1954-01-19 Tesla Slaboproude A Radiotechn Frequency generator with phase shifter
US2960667A (en) * 1958-09-24 1960-11-15 Elliott Brothers London Ltd Variable network control

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2321269A (en) * 1941-11-21 1943-06-08 Rca Corp Frequency modulation
US2346800A (en) * 1942-05-27 1944-04-18 Rca Corp Wave length modulator
US2418842A (en) * 1943-03-04 1947-04-15 Bell Telephone Labor Inc Scanning oscillator
US2441567A (en) * 1945-02-13 1948-05-18 Bell Telephone Labor Inc Variable frequency oscillator

Also Published As

Publication number Publication date
BE485401A (fr)
US2516906A (en) 1950-08-01

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