DE642693C - Koernermikrophon, bei dem die Koernerkammer besondere Vorratsraeume enthaelt - Google Patents

Koernermikrophon, bei dem die Koernerkammer besondere Vorratsraeume enthaelt

Info

Publication number
DE642693C
DE642693C DEI49678D DEI0049678D DE642693C DE 642693 C DE642693 C DE 642693C DE I49678 D DEI49678 D DE I49678D DE I0049678 D DEI0049678 D DE I0049678D DE 642693 C DE642693 C DE 642693C
Authority
DE
Germany
Prior art keywords
electrode
microphone
core
grain
membrane
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
DEI49678D
Other languages
German (de)
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of DE642693C publication Critical patent/DE642693C/de
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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
DEI49678D 1933-05-11 1934-05-12 Koernermikrophon, bei dem die Koernerkammer besondere Vorratsraeume enthaelt Expired DE642693C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US670406A US2042822A (en) 1933-05-11 1933-05-11 Telephone transmitter

Publications (1)

Publication Number Publication Date
DE642693C true DE642693C (de) 1937-03-12

Family

ID=24690278

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI49678D Expired DE642693C (de) 1933-05-11 1934-05-12 Koernermikrophon, bei dem die Koernerkammer besondere Vorratsraeume enthaelt

Country Status (5)

Country Link
US (1) US2042822A (en, 2012)
BE (1) BE402491A (en, 2012)
DE (1) DE642693C (en, 2012)
FR (1) FR771454A (en, 2012)
GB (1) GB435130A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740642C (de) * 1941-01-25 1943-10-25 Kabelindustrie Ag Kapselmikrofon mit einem aus Isolierstoff bestehenden Kapselgehaeuse

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757629C (de) * 1938-09-09 1953-01-19 Lorenz C Ag Querstrommikrofon
US2431022A (en) * 1942-12-21 1947-11-18 Kellogg Switchboard & Supply Telephone transmitter
BE468390A (en, 2012) * 1943-12-28
BE482597A (en, 2012) * 1944-08-15
US2494704A (en) * 1945-09-01 1950-01-17 Bell Telephone Labor Inc Microphone with fuse
US2538026A (en) * 1946-05-07 1951-01-16 Univ Loudspeakers Inc Electroacoustic transducer for actuating loud speakers
US2527159A (en) * 1947-04-26 1950-10-24 Bell Telephone Labor Inc Telephone transmitter with radial slots in the carbon chamber
US2532741A (en) * 1947-10-31 1950-12-05 Bell Telephone Labor Inc Microphone with opposite electrodes being of varying and constant curvature
NL70196C (en, 2012) * 1947-10-31
US2609458A (en) * 1948-01-16 1952-09-02 Vigren Sten Daniel Telephone apparatus
US2585052A (en) * 1948-04-23 1952-02-12 Int Standard Electric Corp Granule type acoustic transducer
US2819351A (en) * 1955-07-21 1958-01-07 Robin Hood Co Microphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740642C (de) * 1941-01-25 1943-10-25 Kabelindustrie Ag Kapselmikrofon mit einem aus Isolierstoff bestehenden Kapselgehaeuse

Also Published As

Publication number Publication date
FR771454A (fr) 1934-10-09
GB435130A (en) 1935-09-16
BE402491A (en, 2012)
US2042822A (en) 1936-06-02

Similar Documents

Publication Publication Date Title
DE642693C (de) Koernermikrophon, bei dem die Koernerkammer besondere Vorratsraeume enthaelt
DE2251177A1 (de) Uebertragungseinrichtung mit signalstossunterdrueckung
DE1965388A1 (de) Verfahren zur Herstellung einer Farbfernsehbildroehre und eine durch dieses Verfahren hergestellte Farbfernsehbildroehre
DE2438296C2 (de) Akkumulatoren mit Wickelelektroden
DE6912949U (de) Halbleitergleichrichter.
DE2435637A1 (de) Halbleiterbauelement mit druckkontakt
DE1921944A1 (de) Kathodenstrahlroehre
DE588779C (de) Elektrolyt-Kondensator
DE2946222A1 (de) Piezoelektrischer resonator
DE2719400A1 (de) Scheibenfoermige halbleiterzelle
AT81918B (de) Mikrophon. Mikrophon.
DE68927568T2 (de) Entladungsröhre
DE511231C (de) Kohlenkoernermikrophon
DE430169C (de) Vorrichtung, um elektrische Schwingungen in Schallschwingungen oder umgekehrt zu uebertragen
DE940654C (de) Koernermikrophon
DE942517C (de) Kohlemikrofon mit einer festen und einer beweglichen Elektrode mit Nebenelektrode
DE1129183B (de) Elektroakustischer Wandler nach dem elektrostatischen Prinzip
DE1272407B (de) Akkumulatorenelektrode
DE581340C (de) Koernermikrophon
AT107228B (de) Mikrophon.
DE604105C (de) Kontaktkappe fuer geschlossene Sicherungen
AT154255B (de) Mikrophon.
DE100043C (en, 2012)
DE683013C (de) Anordnung zur Veraenderung des Widerstandes eines Mikrophons mit voller Kohlekammer
DE1439304C (de) Halbleiterbauelement