GB1276196A - Electro-acoustic transducer - Google Patents

Electro-acoustic transducer

Info

Publication number
GB1276196A
GB1276196A GB47432/69A GB4743269A GB1276196A GB 1276196 A GB1276196 A GB 1276196A GB 47432/69 A GB47432/69 A GB 47432/69A GB 4743269 A GB4743269 A GB 4743269A GB 1276196 A GB1276196 A GB 1276196A
Authority
GB
United Kingdom
Prior art keywords
support
diaphragm
electro
acoustic transducer
sept
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB47432/69A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1276196A publication Critical patent/GB1276196A/en
Expired legal-status Critical Current

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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
GB47432/69A 1968-09-30 1969-09-26 Electro-acoustic transducer Expired GB1276196A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6813993A NL6813993A (un) 1968-09-30 1968-09-30

Publications (1)

Publication Number Publication Date
GB1276196A true GB1276196A (en) 1972-06-01

Family

ID=19804799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47432/69A Expired GB1276196A (en) 1968-09-30 1969-09-26 Electro-acoustic transducer

Country Status (6)

Country Link
US (1) US3683129A (un)
AT (1) AT294212B (un)
DE (1) DE1948095A1 (un)
FR (1) FR2019237A1 (un)
GB (1) GB1276196A (un)
NL (1) NL6813993A (un)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942066A (en) * 1989-04-21 1990-07-17 E. I. Du Pont De Nemours And Company Solid imaging method using photohardenable materials of self limiting thickness
US5128235A (en) * 1989-04-21 1992-07-07 E. I. Du Pont De Nemours And Company Method of forming a three-dimensional object comprising additives imparting reduction of shrinkage to photohardenable compositions

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721840A (en) * 1971-09-14 1973-03-20 Nittan Co Ltd Sound generator
US4190782A (en) * 1978-07-24 1980-02-26 Telex Communications, Inc. Piezoelectric ceramic resonant transducer with stable frequency
CN102124643B (zh) * 2008-07-14 2014-04-02 株式会社村田制作所 压电发电装置
JP5837827B2 (ja) * 2012-01-06 2015-12-24 日本セラミック株式会社 ユニモルフ振動子と超音波送受信器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939106A (en) * 1943-10-06 1960-05-31 Bell Telephone Labor Inc High frequency electromechanical transducer
US2448352A (en) * 1946-03-26 1948-08-31 Sperry Prod Inc Piezoelectric crystal mounting means
US3030606A (en) * 1953-03-19 1962-04-17 Wilbur T Harris Hollow conical electromechanical transducer
US2967956A (en) * 1955-04-19 1961-01-10 Gulton Ind Inc Transducer
GB878087A (en) * 1957-12-09 1961-09-27 Raytheon Co Electroacoustical apparatus
US3007013A (en) * 1959-04-22 1961-10-31 Astatic Corp Microphone construction
US3206558A (en) * 1961-09-22 1965-09-14 Erie Technological Prod Inc Microphone
NL283763A (un) * 1961-09-29
US3305638A (en) * 1964-02-17 1967-02-21 Steven D Teachout Condenser microphone circuit with solid electrolyte battery polarizing source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942066A (en) * 1989-04-21 1990-07-17 E. I. Du Pont De Nemours And Company Solid imaging method using photohardenable materials of self limiting thickness
US5128235A (en) * 1989-04-21 1992-07-07 E. I. Du Pont De Nemours And Company Method of forming a three-dimensional object comprising additives imparting reduction of shrinkage to photohardenable compositions

Also Published As

Publication number Publication date
US3683129A (en) 1972-08-08
AT294212B (de) 1971-11-10
NL6813993A (un) 1970-04-01
DE1948095A1 (de) 1970-08-27
FR2019237A1 (un) 1970-06-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees