BR7904528A - Transformador eletro-acustico - Google Patents

Transformador eletro-acustico

Info

Publication number
BR7904528A
BR7904528A BR7904528A BR7904528A BR7904528A BR 7904528 A BR7904528 A BR 7904528A BR 7904528 A BR7904528 A BR 7904528A BR 7904528 A BR7904528 A BR 7904528A BR 7904528 A BR7904528 A BR 7904528A
Authority
BR
Brazil
Prior art keywords
acoustic transformer
electric acoustic
electric
transformer
acoustic
Prior art date
Application number
BR7904528A
Other languages
English (en)
Inventor
K Walliser
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of BR7904528A publication Critical patent/BR7904528A/pt

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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
BR7904528A 1978-07-17 1979-07-16 Transformador eletro-acustico BR7904528A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782831362 DE2831362A1 (de) 1978-07-17 1978-07-17 Elektroakustischer wandler

Publications (1)

Publication Number Publication Date
BR7904528A true BR7904528A (pt) 1980-04-08

Family

ID=6044593

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7904528A BR7904528A (pt) 1978-07-17 1979-07-16 Transformador eletro-acustico

Country Status (8)

Country Link
EP (1) EP0007036A1 (pt)
JP (1) JPS5516594A (pt)
AR (1) AR228018A1 (pt)
AU (1) AU4893079A (pt)
BR (1) BR7904528A (pt)
DE (1) DE2831362A1 (pt)
GB (1) GB2025732A (pt)
ZA (1) ZA793578B (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005708C2 (de) * 1980-02-15 1984-08-30 Siemens AG, 1000 Berlin und 8000 München Wandlerplatte für piezoelektrische Wandler
JPS582322A (ja) * 1981-06-30 1983-01-07 Nitto Electric Ind Co Ltd 半導体封止用エポキシ樹脂組成物

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299724B (de) * 1966-10-21 1969-07-24 Siemens Ag Mikrophonkapsel mit einem piezoelektrischen Wandlerelement und einem Transistorverstaerker
NL6813996A (pt) * 1968-09-30 1970-04-01
US3846650A (en) * 1970-10-08 1974-11-05 Dynamics Corp Massa Div Electroacoustic transducer of the vibratile diaphragm type with controlled uniformity of performance characteristics and method for controlling uniformity
US3746898A (en) * 1971-10-18 1973-07-17 Bell Telephone Labor Inc Electroacoustic transducer having improved transducing element supporting means
US3786202A (en) * 1972-04-10 1974-01-15 Motorola Inc Acoustic transducer including piezoelectric driving element

Also Published As

Publication number Publication date
AR228018A1 (es) 1983-01-14
DE2831362A1 (de) 1980-01-31
AU4893079A (en) 1980-01-24
JPS5516594A (en) 1980-02-05
ZA793578B (en) 1980-06-25
EP0007036A1 (de) 1980-01-23
GB2025732A (en) 1980-01-23

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