ATE367642T1 - Elektretwandler - Google Patents

Elektretwandler

Info

Publication number
ATE367642T1
ATE367642T1 AT02727624T AT02727624T ATE367642T1 AT E367642 T1 ATE367642 T1 AT E367642T1 AT 02727624 T AT02727624 T AT 02727624T AT 02727624 T AT02727624 T AT 02727624T AT E367642 T1 ATE367642 T1 AT E367642T1
Authority
AT
Austria
Prior art keywords
electret
transducer
electrical converter
layers
surface layers
Prior art date
Application number
AT02727624T
Other languages
English (en)
Inventor
Hannu Olkkonen
Paavo Heikkinen
Original Assignee
Hannu Olkkonen
Paavo Heikkinen
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 Hannu Olkkonen, Paavo Heikkinen filed Critical Hannu Olkkonen
Application granted granted Critical
Publication of ATE367642T1 publication Critical patent/ATE367642T1/de

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/028—Electrets, i.e. having a permanently-polarised dielectric having a heterogeneous dielectric
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Artificial Filaments (AREA)
AT02727624T 2002-05-22 2002-05-22 Elektretwandler ATE367642T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2002/000441 WO2003102983A1 (en) 2002-05-22 2002-05-22 Electret transducer

Publications (1)

Publication Number Publication Date
ATE367642T1 true ATE367642T1 (de) 2007-08-15

Family

ID=29595124

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02727624T ATE367642T1 (de) 2002-05-22 2002-05-22 Elektretwandler

Country Status (5)

Country Link
EP (1) EP1506556B1 (de)
AT (1) ATE367642T1 (de)
AU (1) AU2002257834A1 (de)
DE (1) DE60221296T2 (de)
WO (1) WO2003102983A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103674A1 (de) * 2008-02-19 2009-08-27 Nanogate Ag Kunststoffsubstrat mit einer innerhalb des substrats dispergierten elektretausrüstung
CN108871178B (zh) * 2017-05-10 2020-10-02 中国科学院苏州纳米技术与纳米仿生研究所 基于碳纳米管薄膜阻抗相位角变化的柔性传感器及制法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736436A (en) * 1971-11-04 1973-05-29 Mc Donnell Douglas Corp Electret pressure transducer
US3809828A (en) * 1972-01-17 1974-05-07 Gte Laboratories Inc Electret transducing device
FR2397120A1 (fr) * 1977-07-04 1979-02-02 Lewiner Jacques Perfectionnements aux transducteurs electromecaniques
US4443711A (en) * 1980-06-30 1984-04-17 Tokyo Shibaura Denki Kabushiki Kaisha Electret device
US4891843A (en) * 1983-02-24 1990-01-02 At&T Technologies, Inc. Electret microphone

Also Published As

Publication number Publication date
DE60221296D1 (de) 2007-08-30
AU2002257834A1 (en) 2003-12-19
EP1506556B1 (de) 2007-07-18
WO2003102983A1 (en) 2003-12-11
EP1506556A1 (de) 2005-02-16
DE60221296T2 (de) 2008-04-03

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties