FI74183C - Piezoelektrisk omvandlare. - Google Patents

Piezoelektrisk omvandlare. Download PDF

Info

Publication number
FI74183C
FI74183C FI802943A FI802943A FI74183C FI 74183 C FI74183 C FI 74183C FI 802943 A FI802943 A FI 802943A FI 802943 A FI802943 A FI 802943A FI 74183 C FI74183 C FI 74183C
Authority
FI
Finland
Prior art keywords
transducer
plate
piezoelectric
resonant frequency
frequency
Prior art date
Application number
FI802943A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI74183B (fi
FI802943A7 (fi
Inventor
Erwin Martin
Klaus Baier
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 FI802943A7 publication Critical patent/FI802943A7/fi
Application granted granted Critical
Publication of FI74183B publication Critical patent/FI74183B/fi
Publication of FI74183C publication Critical patent/FI74183C/fi

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)
FI802943A 1979-09-19 1980-09-18 Piezoelektrisk omvandlare. FI74183C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2937922 1979-09-19
DE19792937922 DE2937922A1 (de) 1979-09-19 1979-09-19 Piezoelektrischer wandler

Publications (3)

Publication Number Publication Date
FI802943A7 FI802943A7 (fi) 1981-03-20
FI74183B FI74183B (fi) 1987-08-31
FI74183C true FI74183C (fi) 1987-12-10

Family

ID=6081296

Family Applications (1)

Application Number Title Priority Date Filing Date
FI802943A FI74183C (fi) 1979-09-19 1980-09-18 Piezoelektrisk omvandlare.

Country Status (10)

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

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 (enrdf_load_stackoverflow) * 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
ZA805775B (en) 1981-09-30
AR223549A1 (es) 1981-08-31
AU6250980A (en) 1981-04-09
EP0025955A1 (de) 1981-04-01
FI74183B (fi) 1987-08-31
FI802943A7 (fi) 1981-03-20
BR8005981A (pt) 1981-03-31
ATE11478T1 (de) 1985-02-15
EP0025955B1 (de) 1985-01-23
AU538420B2 (en) 1984-08-16
GR70029B (enrdf_load_stackoverflow) 1982-07-23
DE2937922C2 (enrdf_load_stackoverflow) 1988-11-24
DE2937922A1 (de) 1981-04-09

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Date Code Title Description
MM Patent lapsed

Owner name: SIEMENS AKTIENGESELLSCHAFT