NL7502452A - Piezo electric reversible transducer - eg a multiple sector series connected microphone membrane - Google Patents

Piezo electric reversible transducer - eg a multiple sector series connected microphone membrane

Info

Publication number
NL7502452A
NL7502452A NL7502452A NL7502452A NL7502452A NL 7502452 A NL7502452 A NL 7502452A NL 7502452 A NL7502452 A NL 7502452A NL 7502452 A NL7502452 A NL 7502452A NL 7502452 A NL7502452 A NL 7502452A
Authority
NL
Netherlands
Prior art keywords
sectors
series connected
microphone
piezo electric
microphone membrane
Prior art date
Application number
NL7502452A
Other languages
Dutch (nl)
Original Assignee
Philips Nv
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 Nv filed Critical Philips Nv
Priority to NL7502452A priority Critical patent/NL7502452A/en
Publication of NL7502452A publication Critical patent/NL7502452A/en

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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

In a device for conversion of electrical to acoustic vibrations and vice versa, having >=1 vibrating plate contg. a layer of piezoelectric material and divided up into a number of sectors provided on each with electrodes, the sectors are polarised alternately in opposite directions transversely, while each electrode is mounted over two adjacent sectors, the electrodes on the two faces of the piezo-electric layer being mutually staggered. When used to form a microphone a low capacity is produced by being able to connect all the sectors in series, so that a higher potential is available at the input of the microphone amplifier. Pref. a microphone membrane consists of a pre-polarised simple film of polyvinylidene fluoride, and has a thickness, e.g. 25 mu m. and may be rectangular or circular e.g. diameter 10 mm.
NL7502452A 1975-03-03 1975-03-03 Piezo electric reversible transducer - eg a multiple sector series connected microphone membrane NL7502452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7502452A NL7502452A (en) 1975-03-03 1975-03-03 Piezo electric reversible transducer - eg a multiple sector series connected microphone membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7502452A NL7502452A (en) 1975-03-03 1975-03-03 Piezo electric reversible transducer - eg a multiple sector series connected microphone membrane

Publications (1)

Publication Number Publication Date
NL7502452A true NL7502452A (en) 1976-09-07

Family

ID=19823281

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7502452A NL7502452A (en) 1975-03-03 1975-03-03 Piezo electric reversible transducer - eg a multiple sector series connected microphone membrane

Country Status (1)

Country Link
NL (1) NL7502452A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559418A (en) * 1982-10-08 1985-12-17 Primo Company Limited Ceramic microphone
US4789213A (en) * 1981-07-10 1988-12-06 Siemens Aktiengesellschaft Electro-optical modulator having a monomode light waveguide modulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789213A (en) * 1981-07-10 1988-12-06 Siemens Aktiengesellschaft Electro-optical modulator having a monomode light waveguide modulator
US4559418A (en) * 1982-10-08 1985-12-17 Primo Company Limited Ceramic microphone

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