GB311722A - Improvements in and relating to electro magnetic instruments for converting oscillating currents into sound and vice versa - Google Patents

Improvements in and relating to electro magnetic instruments for converting oscillating currents into sound and vice versa

Info

Publication number
GB311722A
GB311722A GB478728A GB478728A GB311722A GB 311722 A GB311722 A GB 311722A GB 478728 A GB478728 A GB 478728A GB 478728 A GB478728 A GB 478728A GB 311722 A GB311722 A GB 311722A
Authority
GB
United Kingdom
Prior art keywords
reed
sound
relating
series
vice versa
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
GB478728A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 BE358189D priority Critical patent/BE358189A/xx
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB478728A priority patent/GB311722A/en
Priority to FR669349D priority patent/FR669349A/fr
Publication of GB311722A publication Critical patent/GB311722A/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)
GB478728A 1928-02-15 1928-02-15 Improvements in and relating to electro magnetic instruments for converting oscillating currents into sound and vice versa Expired GB311722A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE358189D BE358189A (enrdf_load_stackoverflow) 1928-02-15
GB478728A GB311722A (en) 1928-02-15 1928-02-15 Improvements in and relating to electro magnetic instruments for converting oscillating currents into sound and vice versa
FR669349D FR669349A (fr) 1928-02-15 1929-02-08 Perfectionnements aux instruments électro-magnétiques pour transformer des courants oscillants en sons et inversement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB478728A GB311722A (en) 1928-02-15 1928-02-15 Improvements in and relating to electro magnetic instruments for converting oscillating currents into sound and vice versa

Publications (1)

Publication Number Publication Date
GB311722A true GB311722A (en) 1929-05-15

Family

ID=9783792

Family Applications (1)

Application Number Title Priority Date Filing Date
GB478728A Expired GB311722A (en) 1928-02-15 1928-02-15 Improvements in and relating to electro magnetic instruments for converting oscillating currents into sound and vice versa

Country Status (3)

Country Link
BE (1) BE358189A (enrdf_load_stackoverflow)
FR (1) FR669349A (enrdf_load_stackoverflow)
GB (1) GB311722A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR669349A (fr) 1929-11-14
BE358189A (enrdf_load_stackoverflow)

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