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GB1428913A - Electrostatic transducer and method and means for making same - Google Patents

Electrostatic transducer and method and means for making same

Info

Publication number
GB1428913A
GB1428913A GB1300574A GB1300574A GB1428913A GB 1428913 A GB1428913 A GB 1428913A GB 1300574 A GB1300574 A GB 1300574A GB 1300574 A GB1300574 A GB 1300574A GB 1428913 A GB1428913 A GB 1428913A
Authority
GB
United Kingdom
Prior art keywords
conductor
electrode
jig
electrostatic
annular
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
GB1300574A
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.)
ELECTROSTATIC RESEARCH COERPOR
Original Assignee
ELECTROSTATIC RESEARCH COERPOR
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 ELECTROSTATIC RESEARCH COERPOR filed Critical ELECTROSTATIC RESEARCH COERPOR
Priority to GB1300574A priority Critical patent/GB1428913A/en
Priority to FR7410173A priority patent/FR2266413B3/fr
Priority to CA195,810A priority patent/CA1009361A/en
Priority to DE19742414636 priority patent/DE2414636A1/en
Publication of GB1428913A publication Critical patent/GB1428913A/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
    • H04R19/00—Electrostatic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

1428913 Electrostatic transducers ELECTROSTATIC RESEARCH CORP 23 March 1974 13005/74 Heading H4J An electrostatic transducer comprises a pair of annular frames 22 clamping a high resistivity coated diaphragm 12 at its centre 14 and rim 16 and each carrying an electrode in the form of a flat spiral of sheathed conductor 112. An intermediate diaphragm region may also be clamped by an annular rim 26 extending above ribs 24 to which the electrode is attached by epoxy 40. The conductor 112 and a spacing wire 118, Fig. 4, are wound together in one or more annular chambers defined by mating parts 52, 54, 56 of a winding jig so that the conductor turns are evenly spaced. A wax coating on surface 64 of jig part 52 is melted by the passage of current in conductor 112 to temporarily hold the coil. The jig is dismantled and part 52 assembled with a frame 22 whose electrode support ribs 24 are coated with epoxy which is subsequently cured to affix the electrode and wax melted to release the jig part 52.
GB1300574A 1974-03-23 1974-03-23 Electrostatic transducer and method and means for making same Expired GB1428913A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1300574A GB1428913A (en) 1974-03-23 1974-03-23 Electrostatic transducer and method and means for making same
FR7410173A FR2266413B3 (en) 1974-03-23 1974-03-25
CA195,810A CA1009361A (en) 1974-03-23 1974-03-25 Electrostatic transducer and method and means for making same
DE19742414636 DE2414636A1 (en) 1974-03-23 1974-03-26 ELECTROSTATIC CONVERTER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1300574A GB1428913A (en) 1974-03-23 1974-03-23 Electrostatic transducer and method and means for making same

Publications (1)

Publication Number Publication Date
GB1428913A true GB1428913A (en) 1976-03-24

Family

ID=10015102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1300574A Expired GB1428913A (en) 1974-03-23 1974-03-23 Electrostatic transducer and method and means for making same

Country Status (4)

Country Link
CA (1) CA1009361A (en)
DE (1) DE2414636A1 (en)
FR (1) FR2266413B3 (en)
GB (1) GB1428913A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748576A1 (en) * 1993-10-06 1996-12-18 Chain Reactions, Inc. Variable geometry electromagnetic transducer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG34753A1 (en) * 1982-01-22 1983-11-15 Knchev Electrostatic acoustic converter
CA1284837C (en) * 1987-06-18 1991-06-11 Highwood Audio Inc. Audio transducer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631196A (en) * 1949-10-05 1953-03-10 Arthur A Janszen Electrostatic loud-speaker
US3008013A (en) * 1954-07-20 1961-11-07 Ferranti Ltd Electrostatic loudspeakers
US2896025A (en) * 1955-06-21 1959-07-21 Francis D Wetherill Electrostatic loudspeaker
DE1762110A1 (en) * 1967-04-13 1970-04-16 Elektroakusztikai Gyar Electroacoustic transducer with voice coil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748576A1 (en) * 1993-10-06 1996-12-18 Chain Reactions, Inc. Variable geometry electromagnetic transducer
EP0748576A4 (en) * 1993-10-06 2001-10-17 Chain Reactions Inc Variable geometry electromagnetic transducer

Also Published As

Publication number Publication date
FR2266413A1 (en) 1975-10-24
CA1009361A (en) 1977-04-26
DE2414636A1 (en) 1975-10-16
FR2266413B3 (en) 1977-01-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee