ZA805775B - Piezoelectric transducers - Google Patents

Piezoelectric transducers

Info

Publication number: ZA805775B
Authority: ZA; South Africa
Prior art keywords: piezoelectric transducers; transducers; piezoelectric
Prior art date: 1979-09-19

Application number

ZA00805775A

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.)

1979-09-19

Filing date

1980-09-18

Publication date

1981-09-30

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

1981-09-30 Publication of ZA805775B publication Critical patent/ZA805775B/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)

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

Also Published As

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

Publication	Publication Date	Title
GB2052918B (en)	1984-04-18	Piezoelectric transducers
AU543500B2 (en)	1985-04-26	Piezoelectric transducer
GB2060884B (en)	1984-09-19	Ultrasonics transducer
DE3062519D1 (en)	1983-05-05	Acoustic transducer
GB2052151B (en)	1983-04-27	Electro-mechanical transducers
JPS5665517A (en)	1981-06-03	Piezoelectric vibrator
GB2050692B (en)	1983-04-27	Piezoelectric resonator force transducer
GB2066563B (en)	1983-09-21	Electromechanical transducers
JPS55106571A (en)	1980-08-15	Ultrasoniccwave transducer
JPS55155248A (en)	1980-12-03	Transducer
DE3068357D1 (en)	1984-08-02	Ultrasonic transducer element
GB8321068D0 (en)	1983-09-07	Piezoelectric transducer
GB2060184B (en)	1983-05-25	Displacement transducer
JPS5657910A (en)	1981-05-20	Transducer
JPS5677714A (en)	1981-06-26	Displacement transducer
DE3062465D1 (en)	1983-04-28	Linear-displacement transducer
GB2067378B (en)	1983-12-21	Electro-acoustic transducers
GB2048565B (en)	1983-04-27	Thicknessshear mode piezo-electric vibrator
GB2055017B (en)	1983-07-20	Electrostatic transducer
ZA797036B (en)	1980-11-26	Transducer
JPS5685994A (en)	1981-07-13	Electroacoustic transducer
GB2059062B (en)	1983-08-03	Acoustic sensor
GB2065891B (en)	1983-12-07	Industive displacement transducers
GB2104283B (en)	1986-02-05	Piezoelectric transducer
JPS5696599A (en)	1981-08-04	Electroacoustic transducer