BR8005981A - PIEZOELECTRIC TRANSDUCER - Google Patents

PIEZOELECTRIC TRANSDUCER

Info

Publication number: BR8005981A
Authority: BR; Brazil
Prior art keywords: piezoelectric transducer; piezoelectric; transducer
Prior art date: 1979-09-19

Application number

BR8005981A

Other languages

Portuguese (pt)

Inventor

E Martin

K 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.)

1979-09-19

Filing date

1980-09-18

Publication date

1981-03-31

1980-09-18 Application filed by Siemens Ag filed Critical Siemens Ag

1981-03-31 Publication of BR8005981A publication Critical patent/BR8005981A/en

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)

BR8005981A 1979-09-19 1980-09-18 PIEZOELECTRIC TRANSDUCER BR8005981A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19792937922 DE2937922A1 (en)	1979-09-19	1979-09-19	PIEZOELECTRIC CONVERTER

Publications (1)

Publication Number	Publication Date
BR8005981A true BR8005981A (en)	1981-03-31

Family

ID=6081296

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR8005981A BR8005981A (en)	1979-09-19	1980-09-18	PIEZOELECTRIC TRANSDUCER

Country Status (10)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3131349C2 (en) *	1981-08-07	1983-05-11	Rosenthal Technik Ag, 8672 Selb	Piezoelectric three-tone generator
US4413198A (en) *	1981-12-30	1983-11-01	Motorola, Inc.	Piezoelectric transducer apparatus
DE3446183A1 (en) *	1984-12-18	1986-06-26	Siemens AG, 1000 Berlin und 8000 München	Piezo-electric transducer
JPS6295399U (en) *	1985-12-03	1987-06-18
AU588989B2 (en) *	1986-04-10	1989-09-28	Alcatel Australia Limited	An improved transducer
DE4311701C2 (en) *	1993-04-08	1999-08-26	Siemens Ag	Arrangement for generating acoustic signals, in particular tone calls in telecommunication devices

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 (en) *	1971-04-23	1973-11-15	Siemens Ag, 1000 Berlin U. 8000 Muenchen	Electroacoustic converter, in particular microphone for telephone systems
BE759888A (en) *	1969-12-05	1971-06-04	Siemens Ag	ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY MICROPHONE FOR TELEPHONE SYSTEMS
GB1370164A (en) *	1972-01-30	1974-10-16	Mullard Ltd	Piezoelectric transducer
DE2223531B1 (en) *	1972-05-15	1973-11-08	Siemens Ag	ELECTROACOUSTIC CONVERTER
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

1979
- 1979-09-19 DE DE19792937922 patent/DE2937922A1/en active Granted
1980
- 1980-09-11 AR AR282490A patent/AR223549A1/en active
- 1980-09-12 AT AT80105477T patent/ATE11478T1/en not_active IP Right Cessation
- 1980-09-12 EP EP80105477A patent/EP0025955B1/en not_active Expired
- 1980-09-17 JP JP12806380A patent/JPS5651200A/en active Pending
- 1980-09-17 GR GR62906A patent/GR70029B/el unknown
- 1980-09-18 AU AU62509/80A patent/AU538420B2/en not_active Ceased
- 1980-09-18 ZA ZA00805775A patent/ZA805775B/en unknown
- 1980-09-18 BR BR8005981A patent/BR8005981A/en unknown
- 1980-09-18 FI FI802943A patent/FI74183C/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
AR223549A1 (en)	1981-08-31
DE2937922A1 (en)	1981-04-09
ZA805775B (en)	1981-09-30
ATE11478T1 (en)	1985-02-15
AU538420B2 (en)	1984-08-16
DE2937922C2 (en)	1988-11-24
JPS5651200A (en)	1981-05-08
FI802943A7 (en)	1981-03-20
AU6250980A (en)	1981-04-09
EP0025955B1 (en)	1985-01-23
GR70029B (en)	1982-07-23
FI74183C (en)	1987-12-10
EP0025955A1 (en)	1981-04-01
FI74183B (en)	1987-08-31

Publication	Publication Date	Title
FR2472325B1 (en)	1986-06-27	ELECTROMECHANICAL TRANSDUCER
DK153608C (en)	1989-01-02	PIEZO-ELECTRICAL TRANSDUCER
DE3069001D1 (en)	1984-09-27	Piezoelectric vibration transducer
IT1133941B (en)	1986-07-24	RESONANCE PIEZOELECTRIC TANGENCE TRANSDUCER
BR8006417A (en)	1981-04-14	DISPLACEMENT TRANSDUCER
GB2052918B (en)	1984-04-18	Piezoelectric transducers
FR2462837B1 (en)	1986-05-23	ULTRASONIC TRANSDUCER
BE886850A (en)	1981-04-16	MAGNETIC TRANSDUCER
FR2472899B1 (en)	1985-09-13	ELECTRO-ACOUSTIC TRANSDUCER
BR7906039A (en)	1980-07-08	DISPLACEMENT TRANSDUCER
IT1135564B (en)	1986-08-27	ACOUSTIC TRANSDUCER
FR2466899B1 (en)	1986-07-18	PIEZOELECTRIC OSCILLATOR
ES488162A0 (en)	1980-11-01	IMPROVEMENTS IN ELECTROACOUSTIC OR ELECTRO-MECHANICAL TRANSDUCERS
IT1129239B (en)	1986-06-04	PIEZOELECTRIC ACCELEROMETER
BR7902346A (en)	1979-10-23	TRANSDUCER
FR2510336B1 (en)	1986-10-24	PIEZOELECTRIC TRANSDUCER
FI802943A7 (en)	1981-03-20	PIEZOELECTRIC TRANSDUCER
BE863315A (en)	1978-05-16	TRANSDUCER
AT383682B (en)	1987-08-10	Force transducer
BE895154Q (en)	1983-03-16	FORCE TRANSDUCER
JPS5687824A (en)	1981-07-16	Piezoelectric transducer
BR8005910A (en)	1981-03-31	ELECTRIC ACOUSTIC TRANSDUCERS
NO145554C (en)	1982-04-14	ELECTROACUSTIC TRANSDUCERS
FR2521380B2 (en)	1987-11-27	ACOUSTIC TRANSDUCER
JPS5687823A (en)	1981-07-16	Piezoelectric transducer