IT1051133B - Trasduttore amplificatore del souno elettromeccanico con sorgenti di energia combinata - Google Patents

Trasduttore amplificatore del souno elettromeccanico con sorgenti di energia combinata

Info

Publication number
IT1051133B
IT1051133B IT83658/75A IT8365875A IT1051133B IT 1051133 B IT1051133 B IT 1051133B IT 83658/75 A IT83658/75 A IT 83658/75A IT 8365875 A IT8365875 A IT 8365875A IT 1051133 B IT1051133 B IT 1051133B
Authority
IT
Italy
Prior art keywords
souno
electromechanical
energy sources
combined energy
amplifier transducer
Prior art date
Application number
IT83658/75A
Other languages
English (en)
Italian (it)
Original Assignee
Brien J O
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 Brien J O filed Critical Brien J O
Application granted granted Critical
Publication of IT1051133B publication Critical patent/IT1051133B/it

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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
IT83658/75A 1974-10-07 1975-10-07 Trasduttore amplificatore del souno elettromeccanico con sorgenti di energia combinata IT1051133B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US512190A US3909558A (en) 1974-10-07 1974-10-07 Electromechanical amplifier sound transducer with combined power source

Publications (1)

Publication Number Publication Date
IT1051133B true IT1051133B (it) 1981-04-21

Family

ID=24038069

Family Applications (1)

Application Number Title Priority Date Filing Date
IT83658/75A IT1051133B (it) 1974-10-07 1975-10-07 Trasduttore amplificatore del souno elettromeccanico con sorgenti di energia combinata

Country Status (5)

Country Link
US (1) US3909558A (OSRAM)
JP (1) JPS5147416A (OSRAM)
DE (1) DE2533890A1 (OSRAM)
FR (1) FR2287822A1 (OSRAM)
IT (1) IT1051133B (OSRAM)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968332A (en) * 1975-06-05 1976-07-06 Lawrence Peska Associates, Inc. Toy carbon microphone
USD246369S (en) * 1975-10-08 1977-11-15 O'brien Deceased Gerard J Tap transducer intercom

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US298286A (en) * 1884-05-06 Telephonic transmitter
DE44937C (de) * V. M. BERTHOLD in Cambridgeport, Massach.,V. St. A Neuerung an Batterie-Telephonen
US3136854A (en) * 1962-04-16 1964-06-09 Clark A Willick Underwater telephone

Also Published As

Publication number Publication date
JPS5147416A (OSRAM) 1976-04-23
FR2287822A1 (fr) 1976-05-07
US3909558A (en) 1975-09-30
AU8256175A (en) 1977-01-06
DE2533890A1 (de) 1976-04-08
FR2287822B1 (OSRAM) 1979-05-11

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