GB776782A - Improvements in or relating to ribbon type electro-acoustic transducers - Google Patents

Improvements in or relating to ribbon type electro-acoustic transducers

Info

Publication number
GB776782A
GB776782A GB78254A GB78254A GB776782A GB 776782 A GB776782 A GB 776782A GB 78254 A GB78254 A GB 78254A GB 78254 A GB78254 A GB 78254A GB 776782 A GB776782 A GB 776782A
Authority
GB
United Kingdom
Prior art keywords
ribbon
gap
series
annulus
jan
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
GB78254A
Inventor
Peter Darroll Collings-Wells
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.)
GOODMANS IND Ltd
Original Assignee
GOODMANS IND 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 GOODMANS IND Ltd filed Critical GOODMANS IND Ltd
Priority to GB78254A priority Critical patent/GB776782A/en
Publication of GB776782A publication Critical patent/GB776782A/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
    • H04R9/048—Construction in which the windings of the moving coil lay in the same plane of the ribbon type

Landscapes

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

Abstract

776,782. Sound receiving or transmitting devices. GOODMANS INDUSTRIES, Ltd. Jan. 10, 1955 [Jan. 11, 1954], No. 782/54. Class 40 (4). In a ribbon-type transducer, the air gap 5 which is annular or a sector of an annulus, has the field normal to the plane of the annulus and the ribbon 7 is supported at spaced points around the gap on a series of rods or pins 11 with its width in the direction of the field so that it forms a multiplicity of contiguous straight sections following substantially the curvature of the gap, each section being capable of oscillating in a direction normal to its plane. Pole-pieces 1, 2 which each comprise a semi-circular endplate 1b, 2b, having a flange la, 2a are secured to a magnet 3 so that the edges of the flanges la, 2a define the gap. The rear of the unit is closed by a panel 6 of insulating material to which the ends of the ribbon are clamped. The ribbon may be supported alternatively on a rigid arcuate strip mounted within the gap, the strip having an outer surface consisting of a series of concave faces over which the ribbon is drawn or a series of projecting ribs, for the same purpose. A curved horn 12 may be attached to the pole-pieces.
GB78254A 1954-01-11 1954-01-11 Improvements in or relating to ribbon type electro-acoustic transducers Expired GB776782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB78254A GB776782A (en) 1954-01-11 1954-01-11 Improvements in or relating to ribbon type electro-acoustic transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB78254A GB776782A (en) 1954-01-11 1954-01-11 Improvements in or relating to ribbon type electro-acoustic transducers

Publications (1)

Publication Number Publication Date
GB776782A true GB776782A (en) 1957-06-12

Family

ID=9710412

Family Applications (1)

Application Number Title Priority Date Filing Date
GB78254A Expired GB776782A (en) 1954-01-11 1954-01-11 Improvements in or relating to ribbon type electro-acoustic transducers

Country Status (1)

Country Link
GB (1) GB776782A (en)

Cited By (2)

* 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
WO2002001911A1 (en) * 2000-06-27 2002-01-03 Erik Liljehag Electro-acoustic transducer of ribbon type, loudspeaker system comprising such a transducer and loudspeaker arrangement comprising at least two such transducers.

Cited By (2)

* 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
WO2002001911A1 (en) * 2000-06-27 2002-01-03 Erik Liljehag Electro-acoustic transducer of ribbon type, loudspeaker system comprising such a transducer and loudspeaker arrangement comprising at least two such transducers.

Similar Documents

Publication Publication Date Title
GB1013643A (en) Loudspeaker
GB1380929A (en) Electromagnetic transducer
FR2542552B1 (en) ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC DIAPHRAGM
US2837728A (en) Means to alter the directivity pattern of energy translating devices
FR1067300A (en) Improvements in the production of wave propagation tubes, magnetron type, of circular structure
GB776782A (en) Improvements in or relating to ribbon type electro-acoustic transducers
GB696926A (en) Improvements in microphones
GB1270033A (en) Louspeaker
US2853146A (en) Transmitter with vibratile air coupling
GB1048602A (en) Improvements relating to moving coil loudspeakers and the like
JPS57164718A (en) Acoustooptic optical deflecting element
BE838621A (en) DIAPHRAGM ELECTROACOUSTIC TRANSDUCER
GB869234A (en) Transducer and vibratory diaphragm
US3239029A (en) Speaker design
US1811638A (en) Earphone transmitter
JPS57129095A (en) Piezoelectric loudspeaker
US1849486A (en) Multiple unit sound amplifier
GB1065112A (en) Transducer
GB1206917A (en) Electroacoustic transducer
GB290239A (en) Improvements in or relating to acoustic devices such as loud speakers
GB1015128A (en) Improvements in or relating to ultrasonic resonator mountings
JPS5772497A (en) Piezoelectric speaker
JPS538127A (en) Electroacoustic transducer
JPS52113716A (en) Plane driving speaker
JPS52154623A (en) Sound diaphragm