ZA805775B - Piezoelectric transducers - Google Patents

Piezoelectric transducers

Info

Publication number
ZA805775B
ZA805775B ZA00805775A ZA805775A ZA805775B ZA 805775 B ZA805775 B ZA 805775B ZA 00805775 A ZA00805775 A ZA 00805775A ZA 805775 A ZA805775 A ZA 805775A ZA 805775 B ZA805775 B ZA 805775B
Authority
ZA
South Africa
Prior art keywords
piezoelectric transducers
transducers
piezoelectric
Prior art date
Application number
ZA00805775A
Other languages
English (en)
Inventor
K Baier
E Martin
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 ZA805775B publication Critical patent/ZA805775B/xx

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 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers
    • 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
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • 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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
ZA00805775A 1979-09-19 1980-09-18 Piezoelectric transducers ZA805775B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792937922 DE2937922A1 (de) 1979-09-19 1979-09-19 Piezoelektrischer wandler

Publications (1)

Publication Number Publication Date
ZA805775B true ZA805775B (en) 1981-09-30

Family

ID=6081296

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00805775A ZA805775B (en) 1979-09-19 1980-09-18 Piezoelectric transducers

Country Status (10)

Country Link
EP (1) EP0025955B1 (de)
JP (1) JPS5651200A (de)
AR (1) AR223549A1 (de)
AT (1) ATE11478T1 (de)
AU (1) AU538420B2 (de)
BR (1) BR8005981A (de)
DE (1) DE2937922A1 (de)
FI (1) FI74183C (de)
GR (1) GR70029B (de)
ZA (1) ZA805775B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131349C2 (de) * 1981-08-07 1983-05-11 Rosenthal Technik Ag, 8672 Selb Piezoelektrischer Dreitongeber
US4413198A (en) * 1981-12-30 1983-11-01 Motorola, Inc. Piezoelectric transducer apparatus
DE3446183A1 (de) * 1984-12-18 1986-06-26 Siemens AG, 1000 Berlin und 8000 München Piezoelektrischer wandler
JPS6295399U (de) * 1985-12-03 1987-06-18
AU588989B2 (en) * 1986-04-10 1989-09-28 Alcatel Australia Limited An improved transducer
DE4311701C2 (de) * 1993-04-08 1999-08-26 Siemens Ag Anordnung zur Erzeugung von akustischen Signalen, insbesondere Tonrufen in Telekommunikationsgeräten

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202938A (en) * 1922-02-06 1923-08-07 Signal Gmbh Improvements in acoustic apparatus
DE2119911B2 (de) * 1971-04-23 1973-11-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Elektroakustischer Wandler, insbe sondere Mikrofon fur Fernsprechanlagen
BE759888A (fr) * 1969-12-05 1971-06-04 Siemens Ag Transducteur electro-acoustique, notamment microphone pour installations telephoniques
GB1370164A (en) * 1972-01-30 1974-10-16 Mullard Ltd Piezoelectric transducer
DE2223531B1 (de) * 1972-05-15 1973-11-08 Siemens Ag Elektroakustischer wandler
US4006371A (en) * 1973-03-19 1977-02-01 Whitewater Electronics, Inc. Electroacoustical transducer comprising piezoelectric element
US4056741A (en) * 1973-04-18 1977-11-01 Airco, Inc. Audible signal generating apparatus having selectively controlled audible output
US3922672A (en) * 1974-03-04 1975-11-25 Mallory & Co Inc P R Audible alarm device
JPS5330296A (en) * 1976-09-01 1978-03-22 Seiko Instr & Electronics Ltd Electro-acoustic transducer

Also Published As

Publication number Publication date
JPS5651200A (en) 1981-05-08
AU538420B2 (en) 1984-08-16
EP0025955B1 (de) 1985-01-23
AR223549A1 (es) 1981-08-31
FI74183C (fi) 1987-12-10
AU6250980A (en) 1981-04-09
DE2937922C2 (de) 1988-11-24
FI74183B (fi) 1987-08-31
GR70029B (de) 1982-07-23
BR8005981A (pt) 1981-03-31
DE2937922A1 (de) 1981-04-09
ATE11478T1 (de) 1985-02-15
EP0025955A1 (de) 1981-04-01
FI802943A (fi) 1981-03-20

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