GB317641A - Improvements relating to electromagnetic sound reproducing devices - Google Patents

Improvements relating to electromagnetic sound reproducing devices

Info

Publication number
GB317641A
GB317641A GB2415728A GB2415728A GB317641A GB 317641 A GB317641 A GB 317641A GB 2415728 A GB2415728 A GB 2415728A GB 2415728 A GB2415728 A GB 2415728A GB 317641 A GB317641 A GB 317641A
Authority
GB
United Kingdom
Prior art keywords
pieces
pole
armature
magnet
bolted
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
GB2415728A
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
Priority to BE363178D priority Critical patent/BE363178A/xx
Priority to NL28049D priority patent/NL28049C/xx
Application filed by BRANDES Ltd filed Critical BRANDES Ltd
Priority to GB2415728A priority patent/GB317641A/en
Publication of GB317641A publication Critical patent/GB317641A/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)
GB2415728A 1928-08-22 1928-08-22 Improvements relating to electromagnetic sound reproducing devices Expired GB317641A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE363178D BE363178A (fr) 1928-08-22
NL28049D NL28049C (fr) 1928-08-22
GB2415728A GB317641A (en) 1928-08-22 1928-08-22 Improvements relating to electromagnetic sound reproducing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2415728A GB317641A (en) 1928-08-22 1928-08-22 Improvements relating to electromagnetic sound reproducing devices

Publications (1)

Publication Number Publication Date
GB317641A true GB317641A (en) 1929-08-22

Family

ID=10207278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2415728A Expired GB317641A (en) 1928-08-22 1928-08-22 Improvements relating to electromagnetic sound reproducing devices

Country Status (3)

Country Link
BE (1) BE363178A (fr)
GB (1) GB317641A (fr)
NL (1) NL28049C (fr)

Also Published As

Publication number Publication date
NL28049C (fr)
BE363178A (fr)

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