GB821707A - Improvements in or relating to electro-acoustic transducers - Google Patents

Improvements in or relating to electro-acoustic transducers

Info

Publication number
GB821707A
GB821707A GB2716856A GB2716856A GB821707A GB 821707 A GB821707 A GB 821707A GB 2716856 A GB2716856 A GB 2716856A GB 2716856 A GB2716856 A GB 2716856A GB 821707 A GB821707 A GB 821707A
Authority
GB
United Kingdom
Prior art keywords
armature
slots
sept
frame
electro
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
GB2716856A
Inventor
Jack Maurice
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.)
LUSTRAPHONE Ltd
Original Assignee
LUSTRAPHONE 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 LUSTRAPHONE Ltd filed Critical LUSTRAPHONE Ltd
Priority to GB2716856A priority Critical patent/GB821707A/en
Publication of GB821707A publication Critical patent/GB821707A/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
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

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

Abstract

821,707. Microphones. LUSTRAPHONE Ltd. Sept. 5, 1957 [Sept. 5, 1956], No. 27168/56. Class 40 (4). In a balanced armature type of electromagnetic transducer, the armature 1 has integral supporting arms 2 fitted with thin foil U-shaped strips 6 in slots 3, and the assembly is clamped between two permanent magnets 7, 8 which are secured together by screws 9, virtual pivots adjacent one end of the armature being provided by narrow arm portions 5 formed by the slots. The armature passes through a coil 10, and has its free end positioned between polepieces 12, 13 with an integral extension 15 connected by adhesive to a diaphragm 17. The transducer is mounted on a frame 18 which is enclosed by a casing 20 having an apertured cover 24, the frame also supporting a resonator tube 27. Resistance damping is provided by the portion 19 of the armature between the slots 3 since it is positioned in the narrow air gap between the magnets.
GB2716856A 1956-09-05 1956-09-05 Improvements in or relating to electro-acoustic transducers Expired GB821707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2716856A GB821707A (en) 1956-09-05 1956-09-05 Improvements in or relating to electro-acoustic transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2716856A GB821707A (en) 1956-09-05 1956-09-05 Improvements in or relating to electro-acoustic transducers

Publications (1)

Publication Number Publication Date
GB821707A true GB821707A (en) 1959-10-14

Family

ID=10255304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2716856A Expired GB821707A (en) 1956-09-05 1956-09-05 Improvements in or relating to electro-acoustic transducers

Country Status (1)

Country Link
GB (1) GB821707A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515818A (en) * 1962-01-23 1970-06-02 Tibbetts Industries Magnetic translating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515818A (en) * 1962-01-23 1970-06-02 Tibbetts Industries Magnetic translating device

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