GB639134A - Improvements in or relating to transducers - Google Patents

Improvements in or relating to transducers

Info

Publication number
GB639134A
GB639134A GB839547A GB839547A GB639134A GB 639134 A GB639134 A GB 639134A GB 839547 A GB839547 A GB 839547A GB 839547 A GB839547 A GB 839547A GB 639134 A GB639134 A GB 639134A
Authority
GB
United Kingdom
Prior art keywords
ribbon
cemented
frame
rectangular plates
connection
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
GB839547A
Inventor
Donald Frederick Spear
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.)
Electrical and Musical Industries Ltd
Original Assignee
Electrical and Musical Industries Ltd
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 Electrical and Musical Industries Ltd filed Critical Electrical and Musical Industries Ltd
Priority to GB839547A priority Critical patent/GB639134A/en
Publication of GB639134A publication Critical patent/GB639134A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

639,134. Sound transmitters and receivers. ELECTRICAL & MUSICAL INDUSTRIES, Ltd. March 28, 1947, No. 8395. [Class 40 (iv)] In a ribbon type microphone or loudspeaker, the ribbon 12 is mounted in a frame 4 which forms part of the magnetic system and comprises a pair of slotted rectangular plates 5, 6, Fig. 4, with layers of paper 8, 9 cemented to their inner faces, the layer 8 extending sufficiently into the rectangular slot 7 to allow the ribbon to be cemented thereto. Connection to the ribbon may be made either by soldering or by clamping a connection member in contact with the ribbon between the transverse sides of the rectangular plates 5, 6. The frame may be mounted in slots in the magnet pole pieces or may be screwed directly on to the limbs of the permanent magnet.
GB839547A 1947-03-28 1947-03-28 Improvements in or relating to transducers Expired GB639134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB839547A GB639134A (en) 1947-03-28 1947-03-28 Improvements in or relating to transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB839547A GB639134A (en) 1947-03-28 1947-03-28 Improvements in or relating to transducers

Publications (1)

Publication Number Publication Date
GB639134A true GB639134A (en) 1950-06-21

Family

ID=9851707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB839547A Expired GB639134A (en) 1947-03-28 1947-03-28 Improvements in or relating to transducers

Country Status (1)

Country Link
GB (1) GB639134A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484037A (en) * 1981-05-26 1984-11-20 U.S. Philips Corporation Ribbon-type electro-acoustic transducer with low distortion and improved sensitivity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484037A (en) * 1981-05-26 1984-11-20 U.S. Philips Corporation Ribbon-type electro-acoustic transducer with low distortion and improved sensitivity

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