FR646590A - Dispositif amplificateur perfectionné utilisable avec les microphones électrostatiques, gramophones et autres appareils - Google Patents

Dispositif amplificateur perfectionné utilisable avec les microphones électrostatiques, gramophones et autres appareils

Info

Publication number
FR646590A
FR646590A FR646590DA FR646590A FR 646590 A FR646590 A FR 646590A FR 646590D A FR646590D A FR 646590DA FR 646590 A FR646590 A FR 646590A
Authority
FR
France
Prior art keywords
gramophones
devices
amplifier device
condenser microphones
advanced amplifier
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
Humfrey Andrewes
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.)
Dubilier Condenser Co 1925 Ltd
Original Assignee
Dubilier Condenser Co 1925 Ltd
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 Dubilier Condenser Co 1925 Ltd filed Critical Dubilier Condenser Co 1925 Ltd
Application granted granted Critical
Publication of FR646590A publication Critical patent/FR646590A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
FR646590D 1927-07-29 1927-12-30 Dispositif amplificateur perfectionné utilisable avec les microphones électrostatiques, gramophones et autres appareils Expired FR646590A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2019527A GB305052A (en) 1927-07-29 1927-07-29 An improved amplifying device for use in conjunction with an electrostatic microphone, gramophone or the like

Publications (1)

Publication Number Publication Date
FR646590A true FR646590A (fr) 1928-11-13

Family

ID=10141974

Family Applications (1)

Application Number Title Priority Date Filing Date
FR646590D Expired FR646590A (fr) 1927-07-29 1927-12-30 Dispositif amplificateur perfectionné utilisable avec les microphones électrostatiques, gramophones et autres appareils

Country Status (2)

Country Link
FR (1) FR646590A (fr)
GB (1) GB305052A (fr)

Also Published As

Publication number Publication date
GB305052A (en) 1929-01-29

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