GB648750A - Improvements relating to devices for the interconversion of sound and electrical oscillations - Google Patents

Improvements relating to devices for the interconversion of sound and electrical oscillations

Info

Publication number
GB648750A
GB648750A GB3453946A GB3453946A GB648750A GB 648750 A GB648750 A GB 648750A GB 3453946 A GB3453946 A GB 3453946A GB 3453946 A GB3453946 A GB 3453946A GB 648750 A GB648750 A GB 648750A
Authority
GB
United Kingdom
Prior art keywords
yoke
magnet
interconversion
sound
devices
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
GB3453946A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3453946A priority Critical patent/GB648750A/en
Publication of GB648750A publication Critical patent/GB648750A/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
    • H04R9/06—Loudspeakers
    • 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Landscapes

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

Abstract

648,750. Magnets. BRITISH THOMSONHOUSTON CO., Ltd., BOCOCK, W. A., and SIMPSON, H. Nov. 21, 1946, No. 34539. [Class 35] [Also in Group XXXIX] A permanent magnet 5 is centrally located within a magnetic pot-shaped yoke 4 by a non-magnetic spacing member 6 which is forced on the magnet and engages the inner wall of the yoke by a press fit. An annular air gap is formed between the permanent magnet and a mild steel ring 9 pressed into the yoke. The spacing member may be trough-shaped or formed as shown, and may abut against a shoulder formed in the yoke. The magnet. assembly is clamped to a loudspeaker chassis (see Group XXXIX).
GB3453946A 1946-11-21 1946-11-21 Improvements relating to devices for the interconversion of sound and electrical oscillations Expired GB648750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3453946A GB648750A (en) 1946-11-21 1946-11-21 Improvements relating to devices for the interconversion of sound and electrical oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3453946A GB648750A (en) 1946-11-21 1946-11-21 Improvements relating to devices for the interconversion of sound and electrical oscillations

Publications (1)

Publication Number Publication Date
GB648750A true GB648750A (en) 1951-01-10

Family

ID=10366881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3453946A Expired GB648750A (en) 1946-11-21 1946-11-21 Improvements relating to devices for the interconversion of sound and electrical oscillations

Country Status (1)

Country Link
GB (1) GB648750A (en)

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