AT84228B - Device for amplifying weak electrical currents by means of a cathode ray relay. - Google Patents

Device for amplifying weak electrical currents by means of a cathode ray relay.

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Publication number
AT84228B
AT84228B AT84228DA AT84228B AT 84228 B AT84228 B AT 84228B AT 84228D A AT84228D A AT 84228DA AT 84228 B AT84228 B AT 84228B
Authority
AT
Austria
Prior art keywords
cathode ray
electrical currents
weak electrical
amplifying weak
ray relay
Prior art date
Application number
Other languages
German (de)
Original Assignee
Drahtlose Telegraphie Gmbh
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 Drahtlose Telegraphie Gmbh filed Critical Drahtlose Telegraphie Gmbh
Application granted granted Critical
Publication of AT84228B publication Critical patent/AT84228B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Einrichtung zur Verstärkung schwacher elektrischer Ströme mittels Kathodenstrahlrelais 
 EMI1.1 
 für schwache Wechselströme hörbarer oder unhörbarer Frequenz meist mit einer oder höchstens zwei solcher Röhren begnügen müssen, welche zueinander in Kaskadenschaltung angeordnet waren. Bei Versuchen, eine grösseie Verstärkung durch Reihenschaltung von mehr als zwei Verstärkereinheiten zu erzielen, stiess man bisher auf unüberbrückbar erscheinende Schwierigkeiten. Abgesehen davon, dass die Regelungen der Heizspannungen bei mehr als zwei Röhren 
 EMI1.2 
 Wechselströme meist von hörbarer Frequenz. Die Röhren tönten oder pfiffen, so dass die zu verstärkenden Wechselströme in dem Selbsttönen untergingen. 



   Die Ursache ist im wesentlichen darin zu suchen, dass beim Betriebe vielstufige Verstärker die Anordnung gegen im Raum meist vorhandene elektromagnetische Schwingungen hoher oder niedriger Schwingungszahl (Störungen) ausserordentlich empfindlich ist. Nach vorliegender -Erfindung wird dies dadurch vermieden, dass die zwischen den Verstärkern vorhandenen   Niederhequenztransformatoren einzeln   in Metallgehäuse (z. B. aus Kupfer) eingeschlossen werden,   so-dass   sie von den im Raum vorhandenen magnetischen Wirkungen nicht beeinflusst werden können. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Device for amplifying weak electrical currents by means of a cathode ray relay
 EMI1.1
 for weak alternating currents of audible or inaudible frequency usually have to be satisfied with one or at most two such tubes, which were arranged in a cascade connection to one another. Attempts to achieve a large gain by connecting more than two amplifier units in series have so far encountered difficulties that seem insurmountable. Apart from the fact that the regulation of the heating voltages with more than two tubes
 EMI1.2
 AC currents mostly of an audible frequency. The tubes sounded or whistled, so that the alternating currents to be amplified disappeared in the self-sounding.



   The reason is essentially to be found in the fact that when operating multi-stage amplifiers, the arrangement is extremely sensitive to electromagnetic vibrations of high or low frequency (interference) that are usually present in the room. According to the present invention, this is avoided in that the low-frequency transformers present between the amplifiers are individually enclosed in metal housings (e.g. made of copper) so that they cannot be influenced by the magnetic effects present in the room.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Einrichtung zur Verstärkung schwacher elektrischer Stlöme mittels Kathodenstrahlrelai, in Kaskadenschaltung, gekennzeichnet durch den Einbau der Zwischentransformatoren zwischen EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Device for amplifying weak electrical currents by means of a cathode ray relay, in cascade connection, characterized by the installation of the intermediate transformers between EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT84228D 1915-11-16 1919-11-06 Device for amplifying weak electrical currents by means of a cathode ray relay. AT84228B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE84228X 1915-11-16

Publications (1)

Publication Number Publication Date
AT84228B true AT84228B (en) 1921-06-10

Family

ID=5640328

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84228D AT84228B (en) 1915-11-16 1919-11-06 Device for amplifying weak electrical currents by means of a cathode ray relay.

Country Status (1)

Country Link
AT (1) AT84228B (en)

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