GB246556A - Improvement in telephone receivers - Google Patents

Improvement in telephone receivers

Info

Publication number
GB246556A
GB246556A GB2555224A GB2555224A GB246556A GB 246556 A GB246556 A GB 246556A GB 2555224 A GB2555224 A GB 2555224A GB 2555224 A GB2555224 A GB 2555224A GB 246556 A GB246556 A GB 246556A
Authority
GB
United Kingdom
Prior art keywords
winding
cap
currents
pole
traversed
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
GB2555224A
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.)
Individual
Original Assignee
Individual
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 US679147A priority Critical patent/US1643169A/en
Application filed by Individual filed Critical Individual
Priority to GB2555224A priority patent/GB246556A/en
Publication of GB246556A publication Critical patent/GB246556A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

246,556. Dubilier Condenser Co. (1921), Ltd., (Nyman, A.). Oct. 27, 1924. Magnetic instruments. - A telehone receiver comprises a permanent magnet 3 having a central pole 6 and an annular pole 4 provided with an annular laminated pole piece 8 of silicon steel or other highly permeable material. Between these is a winding 7 traversed by a continuous current. The diaphragm 11 is fitted with an aluminium cap 10 and a " transformer" winding 9, traversed by speech currents, surrounds the cap 10 and is secured to the pole piece 8. Alternating currents are induced in the cap 10 by the currents in the winding 9 and cause the diaphragm 11 to vibrate.
GB2555224A 1923-12-07 1924-10-27 Improvement in telephone receivers Expired GB246556A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US679147A US1643169A (en) 1923-12-07 1923-12-07 Telephone receiver
GB2555224A GB246556A (en) 1924-10-27 1924-10-27 Improvement in telephone receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2555224A GB246556A (en) 1924-10-27 1924-10-27 Improvement in telephone receivers

Publications (1)

Publication Number Publication Date
GB246556A true GB246556A (en) 1926-01-27

Family

ID=10229520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2555224A Expired GB246556A (en) 1923-12-07 1924-10-27 Improvement in telephone receivers

Country Status (1)

Country Link
GB (1) GB246556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118398A (en) * 1982-04-14 1983-10-26 Boaz Elieli Moving coil electroacoustic transducers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118398A (en) * 1982-04-14 1983-10-26 Boaz Elieli Moving coil electroacoustic transducers

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