FR941235A - Générateur de signaux de fréquences variables - Google Patents

Générateur de signaux de fréquences variables

Info

Publication number
FR941235A
FR941235A FR941235DA FR941235A FR 941235 A FR941235 A FR 941235A FR 941235D A FR941235D A FR 941235DA FR 941235 A FR941235 A FR 941235A
Authority
FR
France
Prior art keywords
frequency signal
signal generator
variable frequency
variable
generator
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
S Frankel
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 FR941235A publication Critical patent/FR941235A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
FR941235D 1943-10-21 1946-03-29 Générateur de signaux de fréquences variables Expired FR941235A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US507107A US2380959A (en) 1943-10-21 1943-10-21 Frequency changing signal generating system

Publications (1)

Publication Number Publication Date
FR941235A true FR941235A (fr) 1949-01-05

Family

ID=24017277

Family Applications (1)

Application Number Title Priority Date Filing Date
FR941235D Expired FR941235A (fr) 1943-10-21 1946-03-29 Générateur de signaux de fréquences variables

Country Status (3)

Country Link
US (1) US2380959A (fr)
FR (1) FR941235A (fr)
GB (1) GB596376A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468754A (en) * 1945-07-20 1949-05-03 Cornell Dubilier Electric Discharge wave generator
BE471838A (fr) * 1946-01-29
US2602136A (en) * 1947-04-10 1952-07-01 Sperry Corp Modulating and transmitting apparatus
US2753448A (en) * 1949-10-06 1956-07-03 Rines Robert Harvey Radio-wave pulse system
US3197705A (en) * 1962-04-25 1965-07-27 Moude Homer H Da Modulator shaper for frequency shift transmitter
US3967202A (en) * 1974-07-25 1976-06-29 Northern Illinois Gas Company Data transmission system including an RF transponder for generating a broad spectrum of intelligence bearing sidebands

Also Published As

Publication number Publication date
GB596376A (en) 1948-01-02
US2380959A (en) 1945-08-07

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