GB100281A - Improvements in and relating to Telephone Receivers. - Google Patents

Improvements in and relating to Telephone Receivers.

Info

Publication number
GB100281A
GB100281A GB5458/16A GB545816A GB100281A GB 100281 A GB100281 A GB 100281A GB 5458/16 A GB5458/16 A GB 5458/16A GB 545816 A GB545816 A GB 545816A GB 100281 A GB100281 A GB 100281A
Authority
GB
United Kingdom
Prior art keywords
telephone
coil
shunt
diaphragm
magnet
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
GB5458/16A
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 FR20801A priority Critical patent/FR20801E/en
Priority to FR20804A priority patent/FR20804E/en
Priority to FR20803A priority patent/FR20803E/en
Priority to FR488190A priority patent/FR488190A/en
Priority to GB5466/16A priority patent/GB100282A/en
Priority to GB5471/16A priority patent/GB100283A/en
Application filed by Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Priority to FR22212A priority patent/FR22212E/en
Priority to FR22243A priority patent/FR22243E/en
Priority to FR22752A priority patent/FR22752E/en
Publication of GB100281A publication Critical patent/GB100281A/en
Priority to GB15844/17A priority patent/GB111475A/en
Priority to GB18201/17A priority patent/GB112433A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1623—Supply circuits using tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/28—Code reproducing apparatus
    • H04L15/285—Telegraph sounders; Apparatus for acoustic reception
    • 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
    • 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
    • H04R13/02—Telephone receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

100,281. Soc. Franþaise Radio-Electrique. Dec. 28, 1914, [Convention date]. Receivers; telephone systems and apparatus. - Telephone receivers without permanent magnets have their cores F, Fig. 1, built up of laminated plates separated by insulation, and their diaphragms P slit transversely or formed of thin iron wires, as shown in Fig. 3. The diaphragm slits are plugged with insulating material so that air cannot pass through. The Specification as open to inspection under Sect. 91 (3) (a) comprises also circuit arrangements, in one of which the circuit of the battery e and coil B is connected inductively to line by a transformer or auto-transformer. The coil B may be placed in the line, with the battery e in series with, or in shunt to, the telephone coil B, and with the series arrangement a condenser shunted by a resistance may also be included. The telephone diaphragm is damped by providing an auxiliary damping-magnet placed at right angles to the magnet F, or by placing an adjustable resistance in shunt to the coil B. The telephone may be rendered more sensitive to weak currents by placing a boron resistance in shunt to the coils B, this substance having a negative temperature-coefficient. The inner face of the diaphragm P may be subjected to fluid pressure in order to counterbalance the permanent attraction of the magnet F. This subject-matter does not appear in the Specification as accepted.
GB5458/16A 1914-12-28 1916-04-13 Improvements in and relating to Telephone Receivers. Expired GB100281A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR20801A FR20801E (en) 1914-12-28 Improvements in telephone construction
FR20804A FR20804E (en) 1914-12-28 Improvements in telephone construction
FR20803A FR20803E (en) 1914-12-28 Improvements in telephone construction
FR488190A FR488190A (en) 1914-12-28 1914-12-28 Improvements in telephone construction
GB5471/16A GB100283A (en) 1914-12-28 1916-04-13 Improvements in or relating to Wireless Telegraphy and Telephony.
GB5466/16A GB100282A (en) 1914-12-28 1916-04-13 Improvements in or relating to Wireless Telegraphy and Telephony.
FR22212A FR22212E (en) 1914-12-28 1916-07-29 Improvements in telephone construction
FR22243A FR22243E (en) 1914-12-28 1916-10-30 Improvements in telephone construction
FR22752A FR22752E (en) 1914-12-28 1916-12-07 Improvements in telephone construction
GB15844/17A GB111475A (en) 1914-12-28 1917-10-30 Improvements in or relating to Radio-telegraphy or Telephony.
GB18201/17A GB112433A (en) 1914-12-28 1917-12-07 Improvements in or relating to Telephone Receivers.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR100281X 1914-12-28
FR111475T 1915-03-01
FR100282X 1915-03-01
FR22752T 1916-12-07

Publications (1)

Publication Number Publication Date
GB100281A true GB100281A (en) 1917-04-13

Family

ID=32777094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5458/16A Expired GB100281A (en) 1914-12-28 1916-04-13 Improvements in and relating to Telephone Receivers.

Country Status (1)

Country Link
GB (1) GB100281A (en)

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