GB628057A - Improvements in or relating to apparatus for causing electric oscillations to be frequency-modulated or phase-modulated by sound oscillations - Google Patents

Improvements in or relating to apparatus for causing electric oscillations to be frequency-modulated or phase-modulated by sound oscillations

Info

Publication number
GB628057A
GB628057A GB13533/47A GB1353347A GB628057A GB 628057 A GB628057 A GB 628057A GB 13533/47 A GB13533/47 A GB 13533/47A GB 1353347 A GB1353347 A GB 1353347A GB 628057 A GB628057 A GB 628057A
Authority
GB
United Kingdom
Prior art keywords
modulated
phase
frequency
oscillations
relating
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
GB13533/47A
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.)
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 GB628057A publication Critical patent/GB628057A/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
    • H03C3/28—Angle modulation by means of variable impedance using variable impedance driven mechanically or acoustically
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
GB13533/47A 1946-05-23 1947-05-20 Improvements in or relating to apparatus for causing electric oscillations to be frequency-modulated or phase-modulated by sound oscillations Expired GB628057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL628057X 1946-05-23

Publications (1)

Publication Number Publication Date
GB628057A true GB628057A (en) 1949-08-22

Family

ID=19788647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13533/47A Expired GB628057A (en) 1946-05-23 1947-05-20 Improvements in or relating to apparatus for causing electric oscillations to be frequency-modulated or phase-modulated by sound oscillations

Country Status (5)

Country Link
US (1) US2497605A (en:Method)
DE (1) DE809565C (en:Method)
FR (1) FR946994A (en:Method)
GB (1) GB628057A (en:Method)
NL (1) NL67619C (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917300A (en) * 1956-12-07 1959-12-15 Univ California Frequency modulating accelerometer
DE1261901B (de) * 1963-03-29 1968-02-29 Telefunken Patent Aus Widerstaenden und Kondensatoren aufgebauter Vierpol mit einem Daempfungsmaximum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1615645A (en) * 1920-07-15 1927-01-25 Westinghouse Electric & Mfg Co Combined wireless sending and receiving system
GB406674A (en) * 1931-09-19 1934-02-28 Marconi Wireless Telegraph Co Improvements in or relating to modulated carrier wave transmitting systems
GB512028A (en) * 1938-02-24 1939-08-28 William Spencer Percival Improvements in or relating to thermionic valve circuits
US2418842A (en) * 1943-03-04 1947-04-15 Bell Telephone Labor Inc Scanning oscillator

Also Published As

Publication number Publication date
US2497605A (en) 1950-02-14
DE809565C (de) 1951-07-30
NL67619C (en:Method)
FR946994A (fr) 1949-06-20

Similar Documents

Publication Publication Date Title
GB556208A (en) Arrangement for conversion of frequency modulation to phase modulation and the application thereof to the production of a frequency modulated wave from a frequency stable oscillator
GB530869A (en) Improvements in or relating to methods and apparatus for transmitting or receiving radio signals
GB622140A (en) Improvements in or relating to piezo - electric crystal circuit arrangements
GB628057A (en) Improvements in or relating to apparatus for causing electric oscillations to be frequency-modulated or phase-modulated by sound oscillations
US2289041A (en) Frequency modulation
GB619085A (en) Improvements in or relating to circuit-arrangements for acting upon the natural frequency of an oscillatory circuit by means of a variable reactance
GB552276A (en) Improvements in television transmission
GB659174A (en) An oscillation generator for frequency-modulation transmission systems
US2290159A (en) Frequency modulation system
GB579677A (en) Electric signal communication system
US2098307A (en) Single side band transmission
GB364603A (en) Improvements in and relating to systems of frequency modulation
GB562728A (en) Stable electric-oscillation generator and angular-velocity modulator
GB652717A (en) Improvements in circuit arrangements for generating frequency modulated or phase modulated oscillations
SU70318A1 (ru) Генератор гармоник
GB623060A (en) Improvements in or relating to circuits for generating phase-modulated oscillations
GB649709A (en) Electrical circuits for the production of subjective auditory effects
GB642560A (en) Frequency modulation of electric oscillation generators
GB258643A (en) Improvements in or relating to electrical means and systems for the transmission of sound
SU61881A1 (ru) Многоблочный передатчик
GB547183A (en) Improvements in oscillation generator arrangements and in frequency modulation arrangements
GB164105A (en) Improvements in wireless telephony
US1545502A (en) Radiotelephony
SU39848A1 (ru) Способ дуплексной радиотелефонной св зи
GB767486A (en) Improvements in or relating to electric oscillators which are arranged to supply frequency modulated oscillations