GB643518A - Improvements in or relating to transducers - Google Patents

Improvements in or relating to transducers

Info

Publication number
GB643518A
GB643518A GB2297447A GB2297447A GB643518A GB 643518 A GB643518 A GB 643518A GB 2297447 A GB2297447 A GB 2297447A GB 2297447 A GB2297447 A GB 2297447A GB 643518 A GB643518 A GB 643518A
Authority
GB
United Kingdom
Prior art keywords
armature
polepieces
fitted
air gap
base
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
GB2297447A
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.)
WHEELER INSULATED WIRE Co
Original Assignee
WHEELER INSULATED WIRE Co
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 WHEELER INSULATED WIRE Co filed Critical WHEELER INSULATED WIRE Co
Priority to GB2297447A priority Critical patent/GB643518A/en
Priority to FR953245D priority patent/FR953245A/en
Priority to CH265060D priority patent/CH265060A/en
Publication of GB643518A publication Critical patent/GB643518A/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)
  • Electromagnets (AREA)

Abstract

643,518. Telephone instruments. WHEELER INSULATED WIRE CO., Inc. Aug. 19, 1947, No. 22974. [Class 40 (iv)] A transducer comprises an armature 16 with one end secured between two permanent magnets 8, 10 of opposite adjacent polarity and the other end extending through an air gap 18 between polepieces 12, 14 fitted to the ends of the magnets. As shown, the armature is encircled by a coil 22 and has its free end connected by a driving rod 24 to a diaphragm 6 fitted in a base 4. The magnet assembly and the base are secured together by a rivet 28. For sound-powered operation the armature is centrally-located in the air gap. The transducer may be adapted for battery-energized systems by biassing the armature towards one of the polepieces.
GB2297447A 1947-08-19 1947-08-19 Improvements in or relating to transducers Expired GB643518A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2297447A GB643518A (en) 1947-08-19 1947-08-19 Improvements in or relating to transducers
FR953245D FR953245A (en) 1947-08-19 1947-09-19 Improvements to electroacoustic systems
CH265060D CH265060A (en) 1947-08-19 1947-09-29 Transducer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2297447A GB643518A (en) 1947-08-19 1947-08-19 Improvements in or relating to transducers

Publications (1)

Publication Number Publication Date
GB643518A true GB643518A (en) 1950-09-20

Family

ID=10188059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2297447A Expired GB643518A (en) 1947-08-19 1947-08-19 Improvements in or relating to transducers

Country Status (3)

Country Link
CH (1) CH265060A (en)
FR (1) FR953245A (en)
GB (1) GB643518A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90444C (en) * 1954-07-21
NL282929A (en) * 1961-09-06
DE1299039B (en) * 1966-04-19 1969-07-10 Indian Telephone Ind Ltd Doora Electromagnetic vibrating device

Also Published As

Publication number Publication date
CH265060A (en) 1949-11-15
FR953245A (en) 1949-12-02

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