NL6813993A - - Google Patents

Info

Publication number
NL6813993A
NL6813993A NL6813993A NL6813993A NL6813993A NL 6813993 A NL6813993 A NL 6813993A NL 6813993 A NL6813993 A NL 6813993A NL 6813993 A NL6813993 A NL 6813993A NL 6813993 A NL6813993 A NL 6813993A
Authority
NL
Netherlands
Application number
NL6813993A
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 filed Critical
Priority to NL6813993A priority Critical patent/NL6813993A/xx
Priority to DE19691948095 priority patent/DE1948095A1/de
Priority to US860863A priority patent/US3683129A/en
Priority to GB47432/69A priority patent/GB1276196A/en
Priority to AT911569A priority patent/AT294212B/de
Priority to FR6933363A priority patent/FR2019237A1/fr
Publication of NL6813993A publication Critical patent/NL6813993A/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
    • 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)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
NL6813993A 1968-09-30 1968-09-30 NL6813993A (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL6813993A NL6813993A (fr) 1968-09-30 1968-09-30
DE19691948095 DE1948095A1 (de) 1968-09-30 1969-09-23 Wandler zur Umwandlung von akustischen Schwingungen in elektrische Schwingungen und umgekehrt in Form einer Membran mit mindestens einer Schicht aus piezoelektrischem Material
US860863A US3683129A (en) 1968-09-30 1969-09-25 Electroacoustic transducer having a diaphragm made of at least one layer of piezoelectric material
GB47432/69A GB1276196A (en) 1968-09-30 1969-09-26 Electro-acoustic transducer
AT911569A AT294212B (de) 1968-09-30 1969-09-26 Piezoelektrischer Wandler zur Umwandlung von akustischen Schwingungen in elektrische Schwingungen und umgekehrt
FR6933363A FR2019237A1 (fr) 1968-09-30 1969-09-30

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL6813993A true NL6813993A (fr) 1970-04-01

Family

ID=19804799

Family Applications (1)

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

Country Status (6)

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

Families Citing this family (6)

* 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
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
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
JP5136644B2 (ja) * 2008-07-14 2013-02-06 株式会社村田製作所 圧電発電装置
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 (fr) * 1961-09-29
US3305638A (en) * 1964-02-17 1967-02-21 Steven D Teachout Condenser microphone circuit with solid electrolyte battery polarizing source

Also Published As

Publication number Publication date
DE1948095A1 (de) 1970-08-27
FR2019237A1 (fr) 1970-06-26
US3683129A (en) 1972-08-08
AT294212B (de) 1971-11-10
GB1276196A (en) 1972-06-01

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