DE42047C - Adjustable telephone - Google Patents

Adjustable telephone

Info

Publication number
DE42047C
DE42047C DENDAT42047D DE42047DA DE42047C DE 42047 C DE42047 C DE 42047C DE NDAT42047 D DENDAT42047 D DE NDAT42047D DE 42047D A DE42047D A DE 42047DA DE 42047 C DE42047 C DE 42047C
Authority
DE
Germany
Prior art keywords
adjustable telephone
core
telephone
adjustable
coil
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 - Lifetime
Application number
DENDAT42047D
Other languages
German (de)
Original Assignee
G. LAGACHE in Paris
Publication of DE42047C publication Critical patent/DE42047C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Description

Hierzu 1 Blatt Zeichnungen. ■1 sheet of drawings. ■

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICH PRINTING COMPANY.

Claims (1)

Patent-Anspruch:Patent claim: Bei Telephonen die Anwendung eines feststehenden hohlen Spulenkernes A und eines in diesem beweglichen zweiten Spulenkernes B, zu dem Zwecke, die Entfernung zwischen der Membran und dem auf dieselbe wirkenden Spulenkern B reguliren zu können, ohne den direct von der Spule beeinflufsten Kern A innerhalb der letzteren bewegen zu müssen.In telephones, the use of a stationary hollow coil core A and a second coil core B movable in it, for the purpose of being able to regulate the distance between the membrane and the coil core B acting on it, without the core A within the latter, which is directly influenced by the coil having to move.
DENDAT42047D Adjustable telephone Expired - Lifetime DE42047C (en)

Publications (1)

Publication Number Publication Date
DE42047C true DE42047C (en)

Family

ID=317475

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT42047D Expired - Lifetime DE42047C (en) Adjustable telephone

Country Status (1)

Country Link
DE (1) DE42047C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031614A (en) * 1958-01-10 1962-04-24 Wayne Kerr Lab Ltd Electrical measuring bridges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031614A (en) * 1958-01-10 1962-04-24 Wayne Kerr Lab Ltd Electrical measuring bridges

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