AT326197B - ELECTRIC FOIL - Google Patents

ELECTRIC FOIL

Info

Publication number
AT326197B
AT326197B AT633673A AT633673A AT326197B AT 326197 B AT326197 B AT 326197B AT 633673 A AT633673 A AT 633673A AT 633673 A AT633673 A AT 633673A AT 326197 B AT326197 B AT 326197B
Authority
AT
Austria
Prior art keywords
electric foil
foil
electric
Prior art date
Application number
AT633673A
Other languages
German (de)
Other versions
ATA633673A (en
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
Publication of ATA633673A publication Critical patent/ATA633673A/en
Application granted granted Critical
Publication of AT326197B publication Critical patent/AT326197B/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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • 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
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Laminated Bodies (AREA)
AT633673A 1972-07-21 1973-07-18 ELECTRIC FOIL AT326197B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7210088A NL7210088A (en) 1972-07-21 1972-07-21

Publications (2)

Publication Number Publication Date
ATA633673A ATA633673A (en) 1975-02-15
AT326197B true AT326197B (en) 1975-11-25

Family

ID=19816577

Family Applications (1)

Application Number Title Priority Date Filing Date
AT633673A AT326197B (en) 1972-07-21 1973-07-18 ELECTRIC FOIL

Country Status (8)

Country Link
JP (2) JPS4946426A (en)
AT (1) AT326197B (en)
DE (1) DE2333418C2 (en)
FR (1) FR2194028B1 (en)
GB (1) GB1394347A (en)
IN (1) IN139061B (en)
IT (1) IT991799B (en)
NL (1) NL7210088A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL179104C (en) * 1974-03-15 1986-07-01 Philips Nv ELECTROSTATIC TRANSDUCENT.
JPS5112125A (en) * 1974-07-19 1976-01-30 Matsushita Electric Ind Co Ltd EREKUTORETSUTODENKIONKYOHENKANKI
SE382297B (en) * 1974-08-15 1976-01-19 Ericsson Telefon Ab L M PROCEDURE FOR MANUFACTURING AN ELECTRIC MICROPHONE WITH A CAREFULLY DETERMINED AIR GAP.
JPS5430300B1 (en) * 1975-01-21 1979-09-29
JPS5814317B2 (en) * 1976-04-20 1983-03-18 松下電器産業株式会社 electrically sensitive recording paper
CA1150816A (en) * 1979-07-06 1983-07-26 Ronald Else Method and apparatus for implanting a charge in an electret foil
FI20070155A0 (en) * 2007-02-23 2007-02-23 Panphonics Oy Elektreettilevyrakenne
DE102008013942A1 (en) * 2008-03-12 2009-09-17 Nanogate Ag Electret coating on a substrate, useful e.g. for finishing textiles and carpets, producing filters, preferably for filtering air and water, and in sensors, comprises non-magnetic particles with inorganic coating and/or magnetic particles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1789091B2 (en) * 1967-05-15 1974-04-04 Thermo Electron Corp., Waltham, Mass. (V.St.A.) Electret and process and apparatus for its manufacture. Eliminated from: 1639444
NL143362B (en) * 1968-07-10 1974-09-16 Tno METHOD OF FORMING A ONE-SIDED METALLIZED ELECTRICAL PHOELY, AND SUCH AN ELECTRICAL FOELY FORMED ACCORDING TO THIS METHOD.
GB1302590A (en) * 1969-09-10 1973-01-10
JPS4857614A (en) * 1971-11-17 1973-08-13

Also Published As

Publication number Publication date
FR2194028A1 (en) 1974-02-22
JPS4946426A (en) 1974-05-04
DE2333418A1 (en) 1974-01-31
IT991799B (en) 1975-08-30
GB1394347A (en) 1975-05-14
JPS55133699U (en) 1980-09-22
ATA633673A (en) 1975-02-15
NL7210088A (en) 1974-01-23
FR2194028B1 (en) 1977-02-18
IN139061B (en) 1976-05-01
DE2333418C2 (en) 1985-01-10

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Legal Events

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