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.Info
- 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
Links
- 238000009434 installation Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Landscapes
- Amplifiers (AREA)
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)
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) |
-
1919
- 1919-11-06 AT AT84228D patent/AT84228B/en active
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