GB1065112A - Transducer - Google Patents

Transducer

Info

Publication number
GB1065112A
GB1065112A GB2620364A GB2620364A GB1065112A GB 1065112 A GB1065112 A GB 1065112A GB 2620364 A GB2620364 A GB 2620364A GB 2620364 A GB2620364 A GB 2620364A GB 1065112 A GB1065112 A GB 1065112A
Authority
GB
United Kingdom
Prior art keywords
membrane
sheet
coil
attached
frame
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
GB2620364A
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.)
MICHAEL STOLOW
Original Assignee
MICHAEL STOLOW
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 MICHAEL STOLOW filed Critical MICHAEL STOLOW
Publication of GB1065112A publication Critical patent/GB1065112A/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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
    • 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

Landscapes

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

Abstract

1,065,112. Moving coil instruments. M. STOLOW. June 24, 1964 [June 26, 1963], No. 26203/64. Heading H4J. In a moving coil transducer, for example a loud-speaker, the coil is attached to a flat support sheet which is attached, directly or indirectly, to a planar membrane supported at its edges in a frame. The support sheet is at right-angles to the membrane. The transducer comprises a substantially rectangular membrane (11), see Figs. 1, 2 (not shown), supported at its edges in a frame 12 wherein it is held by felt or rubber strips 13. The support sheet 15 (Fig. 4, not shown) is oblong and is glued into a slit provided in the centre of the membrane 11. A rectangular, flat voice coil 16 is glued to sheet 15. Sheet 15 is maintained perpendicular to the membrane 11 by a strip 18, slightly wider than the sheet 15, attached at its two ends to the frame 12 by rubber strips 19. Instead of the strip 18, a spider may be used. The magnet system comprises two permanent magnets 22, 23 secured to the frame 12 by screws 20. Each magnet 22, 23 has a pair of polepieces 24, 25 or 26, 27 arranged so that confronting faces 24, 26 are of opposite polarity, as are faces 25, 27. The sheet 15 may be attached to the membrane 11 by a pin (32), Fig. 5 (not shown). The coil may be elliptical or circular, Fig. 6 (not shown), the polepieces being of Corresponding shape. The sheet 15 may have positioned on it a rectangular or elliptical member of Presspahn, cardboard or plastics, the coil 16 being wound around and in the plane of the member. Alternatively there may be used a coil printed on one or both sides of a single flat sheet, or a plurality of such sheets with a coil on each of these, the coils being connected in parallel. The membrane 11 may be a single or double layer of veneer. A single-layer veneer has the sheet 15 attached across the grain. Alternatively the membrane 11 is of cardboard or plastics, e.g. foamed polystyrene. Holes (14) may be provided in the membrane 11 and a layer 11<SP>1</SP> of paper or plastics sheet glued to the membrane surface.
GB2620364A 1963-06-26 1964-06-24 Transducer Expired GB1065112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL1947963 1963-06-26

Publications (1)

Publication Number Publication Date
GB1065112A true GB1065112A (en) 1967-04-12

Family

ID=11043259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2620364A Expired GB1065112A (en) 1963-06-26 1964-06-24 Transducer

Country Status (2)

Country Link
DE (1) DE1437469A1 (en)
GB (1) GB1065112A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048434A1 (en) * 1980-09-19 1982-03-31 Electro-Magnetic Corporation Electro acoustic planar transducer
CN103733645A (en) * 2011-06-28 2014-04-16 埃克塞尔威公司 Flat-type speaker having n magnets and n+1 voice coil plates

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441980A1 (en) * 1978-11-16 1980-06-13 Audax ELECTRO-ACOUSTIC TRANSDUCER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048434A1 (en) * 1980-09-19 1982-03-31 Electro-Magnetic Corporation Electro acoustic planar transducer
CN103733645A (en) * 2011-06-28 2014-04-16 埃克塞尔威公司 Flat-type speaker having n magnets and n+1 voice coil plates
EP2728902A4 (en) * 2011-06-28 2015-05-06 Exelway Inc Flat-type speaker having n magnets and n+1 voice coil plates

Also Published As

Publication number Publication date
DE1437469A1 (en) 1968-10-17

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