DE69936C - Microphone in which the power circuit is formed by charred fiber - Google Patents

Microphone in which the power circuit is formed by charred fiber

Info

Publication number
DE69936C
DE69936C DENDAT69936D DE69936DA DE69936C DE 69936 C DE69936 C DE 69936C DE NDAT69936 D DENDAT69936 D DE NDAT69936D DE 69936D A DE69936D A DE 69936DA DE 69936 C DE69936 C DE 69936C
Authority
DE
Germany
Prior art keywords
microphone
power circuit
fiber
charred
charred fiber
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
DENDAT69936D
Other languages
German (de)
Original Assignee
B. MÜNSBERG in Berlin O., Mühlenstrafse 8
Publication of DE69936C publication Critical patent/DE69936C/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
    • H04R21/00—Variable-resistance transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Inorganic Fibers (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMTPATENT OFFICE

Die Erfindung bezieht sich auf Mikrophone, bei welchen der Stromschlufstheil aus verkohlter Faser gebildet wird, die den Vortheil hat, dafs der Stromschlufstheil nachgiebig und in hohem Grade mikrophonisch, dabei gleichzeitig von geringem Widerstand ist.The invention relates to microphones in which the Stromschlufstteil from charred Fiber is formed, which has the advantage that the power circuit part is flexible and high Grade microphonic, at the same time of little resistance.

Nach der Erfindung einzurichtende Mikrophone bestehen z. B. aus einer Platte aus Nichtleiterstoff, in welcher eine Aussparung vorgesehen wird, die zur Aufnahme eines Blockes aus harter Kohle dient. Dieser Block wird ausgehöhlt, um einen Kohlenknopf oder Pflock aufzunehmen; beide, der Block und Knopf aus Kohle, bilden das Mikrophon. Der Knopf besteht aus einem inneren Theil aus harter Kohle, an welchem die Schallplatte durch eine Schraube befestigt ist, und einer äufseren Bekleidung aus verkohltem Faserstoff (Fiber), welcher vor oder nach der Verkohlung zweckmäfsig mit feiner Kohle oder Graphit gesättigt werden kann; etwas von diesem verkohlten Faserstoff kann auch zwischen die Schallplatte und die harte Kohle gelegt werden. Es können auch andere Mikrophoneinrichtungen zur Benutzung von verkohltem Faserstoff geeignet gemacht werden; der Knopf und die Pfanne, wie angegeben, ist indessen eine Ausführung, welche bei Benutzung besonders gute Ergebnisse hat erreichen lassen, insofern die für den verkohlten Faserstoff in Anspruch zu nehmenden vorgenannten Vortheile besonders deutlich hervortreten.According to the invention to be set up microphones exist z. B. from a plate made of non-conductive material, in which a recess is provided which is used to receive a block of hard coal. This block will hollowed out to accommodate a coal button or stake; both, the block and button off Coal, make up the microphone. The button consists of an inner part made of hard Coal, to which the record is attached by a screw, and outer clothing made of carbonized fiber, which is useful before or after carbonization can be saturated with fine carbon or graphite; some of this charred Fiber can also be placed between the record and the hard coal. It can Other microphone devices for using charred pulp are also suitable be made; the button and the pan, as indicated, is, however, an embodiment, which has led to particularly good results when used, insofar as the one for the carbonized fiber to take advantage of the aforementioned advantages particularly clear step forward.

Claims (1)

Patent-Anspruch:Patent claim: Bei Mikrophonen ein Stromschlufstheil, bestehend aus verkohlter Faser, wie z. B. Baumwollfaser, welche elastisch und stark mikrophonisch ist und einen geringen Widerstand bietet.In microphones a Stromschlufstheil, consisting of carbonized fiber, such. B. cotton fiber, which is elastic and strongly microphonic and offers a low resistance.
DENDAT69936D Microphone in which the power circuit is formed by charred fiber Expired - Lifetime DE69936C (en)

Publications (1)

Publication Number Publication Date
DE69936C true DE69936C (en)

Family

ID=343358

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT69936D Expired - Lifetime DE69936C (en) Microphone in which the power circuit is formed by charred fiber

Country Status (1)

Country Link
DE (1) DE69936C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3216616A1 (en) * 1982-05-04 1983-12-22 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut LENGTH OR ANGLE MEASURING SYSTEM
US4461083A (en) * 1982-08-11 1984-07-24 Dr. Johannes Heidenhain Gmbh Length or angle measuring instrument
US6673168B1 (en) 1998-07-23 2004-01-06 Ks Gleitlager Gmbh Material on an aluminum basis for anti-friction bearings
JPWO2004058883A1 (en) * 2002-12-26 2006-04-27 三菱レイヨン株式会社 POLYMER COMPOSITION, COMPOSITE FIBER, METHOD FOR PRODUCING THEM, AND FABRIC

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3216616A1 (en) * 1982-05-04 1983-12-22 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut LENGTH OR ANGLE MEASURING SYSTEM
US4527056A (en) * 1982-05-04 1985-07-02 Dr. Johannes Heidenhain Gmbh Error correction system for position measuring device
US4461083A (en) * 1982-08-11 1984-07-24 Dr. Johannes Heidenhain Gmbh Length or angle measuring instrument
US6673168B1 (en) 1998-07-23 2004-01-06 Ks Gleitlager Gmbh Material on an aluminum basis for anti-friction bearings
JPWO2004058883A1 (en) * 2002-12-26 2006-04-27 三菱レイヨン株式会社 POLYMER COMPOSITION, COMPOSITE FIBER, METHOD FOR PRODUCING THEM, AND FABRIC
JP5016786B2 (en) * 2002-12-26 2012-09-05 三菱レイヨン株式会社 POLYMER COMPOSITION, COMPOSITE FIBER, METHOD FOR PRODUCING THEM, AND FABRIC

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