GB313484A - Electromagnetic sound reproducer - Google Patents

Electromagnetic sound reproducer

Info

Publication number
GB313484A
GB313484A GB1317/29A GB131729A GB313484A GB 313484 A GB313484 A GB 313484A GB 1317/29 A GB1317/29 A GB 1317/29A GB 131729 A GB131729 A GB 131729A GB 313484 A GB313484 A GB 313484A
Authority
GB
United Kingdom
Prior art keywords
armature
screws
pole
pieces
air gaps
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
GB1317/29A
Other languages
English (en)
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.)
BRANDES Ltd
Original Assignee
BRANDES 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 BRANDES Ltd filed Critical BRANDES Ltd
Publication of GB313484A publication Critical patent/GB313484A/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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB1317/29A 1928-06-12 1929-01-14 Electromagnetic sound reproducer Expired GB313484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US284772A US1777271A (en) 1928-06-12 1928-06-12 Electromagnetic sound reproducer

Publications (1)

Publication Number Publication Date
GB313484A true GB313484A (en) 1930-01-30

Family

ID=23091470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1317/29A Expired GB313484A (en) 1928-06-12 1929-01-14 Electromagnetic sound reproducer

Country Status (4)

Country Link
US (1) US1777271A (enrdf_load_stackoverflow)
BE (1) BE361147A (enrdf_load_stackoverflow)
FR (1) FR676035A (enrdf_load_stackoverflow)
GB (1) GB313484A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
US1777271A (en) 1930-09-30
BE361147A (enrdf_load_stackoverflow)
FR676035A (fr) 1930-02-18

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