FR1476944A - Improvements to electromechanical transducers - Google Patents

Improvements to electromechanical transducers

Info

Publication number
FR1476944A
FR1476944A FR57377A FR57377A FR1476944A FR 1476944 A FR1476944 A FR 1476944A FR 57377 A FR57377 A FR 57377A FR 57377 A FR57377 A FR 57377A FR 1476944 A FR1476944 A FR 1476944A
Authority
FR
France
Prior art keywords
electromechanical transducers
transducers
electromechanical
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
FR57377A
Other languages
French (fr)
Inventor
Cyril Francis Drake
Michel Lawrence Gayford
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
Priority claimed from GB15677/65A external-priority patent/GB1036837A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR57377A priority Critical patent/FR1476944A/en
Application granted granted Critical
Publication of FR1476944A publication Critical patent/FR1476944A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04R19/04—Microphones
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
FR57377A 1965-04-13 1966-04-13 Improvements to electromechanical transducers Expired FR1476944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR57377A FR1476944A (en) 1965-04-13 1966-04-13 Improvements to electromechanical transducers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB15677/65A GB1036837A (en) 1965-04-13 1965-04-13 Improvements in or relating to electromechanical transducers
FR57377A FR1476944A (en) 1965-04-13 1966-04-13 Improvements to electromechanical transducers

Publications (1)

Publication Number Publication Date
FR1476944A true FR1476944A (en) 1967-04-14

Family

ID=26169909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR57377A Expired FR1476944A (en) 1965-04-13 1966-04-13 Improvements to electromechanical transducers

Country Status (1)

Country Link
FR (1) FR1476944A (en)

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