GB1059307A - Improvements in electrostatic loudspeakers - Google Patents

Improvements in electrostatic loudspeakers

Info

Publication number
GB1059307A
GB1059307A GB615565A GB615565A GB1059307A GB 1059307 A GB1059307 A GB 1059307A GB 615565 A GB615565 A GB 615565A GB 615565 A GB615565 A GB 615565A GB 1059307 A GB1059307 A GB 1059307A
Authority
GB
United Kingdom
Prior art keywords
cotton
inner plate
lengths
plates
conductive
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
GB615565A
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.)
ALEXANDER SHACKMAN
Original Assignee
ALEXANDER SHACKMAN
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 ALEXANDER SHACKMAN filed Critical ALEXANDER SHACKMAN
Priority to GB615565A priority Critical patent/GB1059307A/en
Publication of GB1059307A publication Critical patent/GB1059307A/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
    • H04R19/02—Loudspeakers

Landscapes

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

Abstract

1,059,307. Electrostatic loud-speakers. A. SHACKMAN. April 30, 1965 [Feb. 12, 1965], No. 6155/65. Heading H4J. An electrostatic loudspeaker assembly comprises two outer rigid perforated zinc plates 1, 2 and an inner rigid perforated zinc plate 3. Plates 1 and 2 are parallel. but may be of overall non- plane shape, e.g. part-cylindrical. Intermediate flexible diaphragms 4, 5 of non-conductive plastics film are each metallized on that surface 4a, 5a which faces towards the inner plate 3. Their opposite surfaces, facing plates 1. 2, are non-conductive. Lengths of cotton 6a are secured along and in contact with both faces of the inner plate 3 at parallel positions. Similarly, lengths of cotton 6b are secured along and in contact with the non-conductive outer surface of each diaphragm 4, 5. The lengths of cotton may be portions of continuous filaments. The assembly is in the form of a lightly compressed sandwich without any spacing other than that dictated by the thickness of the cottons 6a, 6b. The surfaces 4a, 5a are in touching and electrical contact with the inner plate 3 except where they are held away by cotton 6a. The assembly is connected as shown to a transformer T, the primary winding P of which is connected to an audio-frequency source. The centre tap of the secondary winding S is connected to the negative pole of a D.C. polarizing voltage. The positive pole is connected through a 10 megohm resistor R to the inner plate 3.
GB615565A 1965-02-12 1965-02-12 Improvements in electrostatic loudspeakers Expired GB1059307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB615565A GB1059307A (en) 1965-02-12 1965-02-12 Improvements in electrostatic loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB615565A GB1059307A (en) 1965-02-12 1965-02-12 Improvements in electrostatic loudspeakers

Publications (1)

Publication Number Publication Date
GB1059307A true GB1059307A (en) 1967-02-15

Family

ID=9809419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB615565A Expired GB1059307A (en) 1965-02-12 1965-02-12 Improvements in electrostatic loudspeakers

Country Status (1)

Country Link
GB (1) GB1059307A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612778A (en) * 1967-05-15 1971-10-12 Thermo Electron Corp Electret acoustic transducer and method of making
US3654403A (en) * 1969-05-01 1972-04-04 Chester C Pond Electrostatic speaker
US3668336A (en) * 1969-12-08 1972-06-06 Dayton Wright Associates Ltd Audio system including electrostatic loudspeaker
USRE28420E (en) * 1967-05-15 1975-05-13 Blbctret acoustic transducer
GB2230911A (en) * 1989-04-25 1990-10-31 Francis Kiarie Gathige Electrical circuits
US5297214A (en) * 1988-09-19 1994-03-22 Bruney Paul F Loudspeaker structure
US5471540A (en) * 1992-10-24 1995-11-28 Sony Corporation Electrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each other

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612778A (en) * 1967-05-15 1971-10-12 Thermo Electron Corp Electret acoustic transducer and method of making
USRE28420E (en) * 1967-05-15 1975-05-13 Blbctret acoustic transducer
US3654403A (en) * 1969-05-01 1972-04-04 Chester C Pond Electrostatic speaker
US3668336A (en) * 1969-12-08 1972-06-06 Dayton Wright Associates Ltd Audio system including electrostatic loudspeaker
US5297214A (en) * 1988-09-19 1994-03-22 Bruney Paul F Loudspeaker structure
GB2230911A (en) * 1989-04-25 1990-10-31 Francis Kiarie Gathige Electrical circuits
US5471540A (en) * 1992-10-24 1995-11-28 Sony Corporation Electrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each other

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