GB527100A - Improvements in or relating to electro-acoustic devices - Google Patents

Improvements in or relating to electro-acoustic devices

Info

Publication number
GB527100A
GB527100A GB1011339A GB1011339A GB527100A GB 527100 A GB527100 A GB 527100A GB 1011339 A GB1011339 A GB 1011339A GB 1011339 A GB1011339 A GB 1011339A GB 527100 A GB527100 A GB 527100A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
behind
membrane
pole
airman
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
GB1011339A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 FR864321D priority Critical patent/FR864321A/fr
Priority to BE438509D priority patent/BE438509A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1011339A priority patent/GB527100A/en
Publication of GB527100A publication Critical patent/GB527100A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Percussion Or Vibration Massage (AREA)
GB1011339A 1939-03-31 1939-03-31 Improvements in or relating to electro-acoustic devices Expired GB527100A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR864321D FR864321A (en:Method) 1939-03-31
BE438509D BE438509A (en:Method) 1939-03-31
GB1011339A GB527100A (en) 1939-03-31 1939-03-31 Improvements in or relating to electro-acoustic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1011339A GB527100A (en) 1939-03-31 1939-03-31 Improvements in or relating to electro-acoustic devices

Publications (1)

Publication Number Publication Date
GB527100A true GB527100A (en) 1940-10-02

Family

ID=9961729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1011339A Expired GB527100A (en) 1939-03-31 1939-03-31 Improvements in or relating to electro-acoustic devices

Country Status (3)

Country Link
BE (1) BE438509A (en:Method)
FR (1) FR864321A (en:Method)
GB (1) GB527100A (en:Method)

Also Published As

Publication number Publication date
BE438509A (en:Method)
FR864321A (en:Method) 1941-04-29

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