AT43010B - Device for amplifying weak electrical currents. - Google Patents

Device for amplifying weak electrical currents.

Info

Publication number
AT43010B
AT43010B AT43010DA AT43010B AT 43010 B AT43010 B AT 43010B AT 43010D A AT43010D A AT 43010DA AT 43010 B AT43010 B AT 43010B
Authority
AT
Austria
Prior art keywords
electrical currents
weak electrical
coil
amplifying
carbon contact
Prior art date
Application number
Other languages
German (de)
Inventor
Anton Pollak
Original Assignee
Anton Pollak
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 Anton Pollak filed Critical Anton Pollak
Application granted granted Critical
Publication of AT43010B publication Critical patent/AT43010B/en

Links

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Description

  

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  Vorrichtung zum Verstärken von schwachen,   elektrischen Strömen.   
 EMI1.1 
 

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   Die'Vorrichtung kann vorteilhaft in Telephonstromkreisen als Schallvorstärker verwendet werden. Ferner kann dieselbe auch bei denjenigen Arten der Telegraphie, wo der den Empfänger 
 EMI2.1 




   <Desc / Clms Page number 1>
 



  Device for amplifying weak electrical currents.
 EMI1.1
 

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   The device can advantageously be used as a sound preamplifier in telephone circuits. Furthermore, the same can also be done in those types of telegraphy where the recipient
 EMI2.1

Claims (1)

PATENT-ANSPRUCH : Vorrichtung zum Verstärken schwacher elektrischer Ströme, bei welcher die zur Aufnahme des zu verstärkenden Stromes dienende Spule in einem starken magnetischen Felde liegt und mit einem Kohlenkontakt oder mit einer Mikrophonmembrane verbunden ist, dadurch gekennzeichnet, dass in den beiden Deckplatten (1) des Magnetmantels (6) um die beiden Enden des Kernes (7) je ein enger Luftraum ausgebildet ist, in welchen je eine mit einer Mikrophonmembrane oder einem Kohlenkontakte verbundene, in der Richtung ihrer Längsachse schwingbare Spule (2) angeordnet ist, von denen die eine, welche den zu verstärkenden Linienstrom aufnimmt, ein Mikrophon (4) oder Kohlenkontakt betätigt, in dessen Stromkreis die andere Spule (2) geschaltet ist. EMI2.2 PATENT CLAIM: Device for amplifying weak electrical currents, in which the coil serving to receive the current to be amplified lies in a strong magnetic field and is connected to a carbon contact or to a microphone membrane, characterized in that in the two cover plates (1) of the magnetic shell (6 ) a narrow air space is formed around the two ends of the core (7), in each of which a coil (2) connected to a microphone membrane or a carbon contact, oscillatable in the direction of its longitudinal axis, is arranged, one of which, which leads to the picks up amplifying line current, actuates a microphone (4) or carbon contact, in whose circuit the other coil (2) is connected. EMI2.2
AT43010D 1907-08-17 1909-11-12 Device for amplifying weak electrical currents. AT43010B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU46781T 1907-08-17

Publications (1)

Publication Number Publication Date
AT43010B true AT43010B (en) 1910-07-11

Family

ID=32865974

Family Applications (1)

Application Number Title Priority Date Filing Date
AT43010D AT43010B (en) 1907-08-17 1909-11-12 Device for amplifying weak electrical currents.

Country Status (1)

Country Link
AT (1) AT43010B (en)

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