AT63873B - Device for generating X-rays by means of high-tension Tesla currents that are only cathodically fed to the tube. - Google Patents

Device for generating X-rays by means of high-tension Tesla currents that are only cathodically fed to the tube.

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Publication number
AT63873B
AT63873B AT63873DA AT63873B AT 63873 B AT63873 B AT 63873B AT 63873D A AT63873D A AT 63873DA AT 63873 B AT63873 B AT 63873B
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AT
Austria
Prior art keywords
tube
tesla
rays
generating
currents
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT63873B publication Critical patent/AT63873B/en

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  • X-Ray Techniques (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Einrichtung zur Erzeugung von Röntgenstrahlen mittels hochgespannter, der Röhre nur kathodisch zugeführter Teslaströme.   
 EMI1.1 
   Gleichheit der   positiven und negativen Halbwellen die   Röntgenröhre   Schliessungslciht bekommt. 



   Um eine schliessungsfreien Betrieb der Röntgenröhre zu erzielen,   werden gemäss der     Gründung   entweder im Primär- oder Sekundärkreise des Teslatransformators Vorrichtungen angewandt, die   eine Energieentziehung   und dadurch eine starke Dämpfung der Hochfrequenz-   schwingungen,   also eine Unsymmetrie in der Kurvenform des   Hochfrequenzstromes   bewirken. 



   Vorrichtungen der genannten Art sind z. B. die Wiensche Löschvorrichtung, die sowohl im Primarkreise, als auch im Sekundärkreise des Teslatransformators angeordnet sein kann. fernerhin Widerstände und Kondensatoren, die ebenfalls in den Primärkreis oder in Reihe mit der Röntgenröhre geschaltet sein können. Besonders geeignet sind hiebei Kondensatoren mit Dielektrikum, das eine grosse dielektrische   Hysteresisarbeit bedingt,   insbesondere auch Kondensatoren, die einen verhältnismässig geringen Isolationswiderstand haben, also dip Rolle eines grossen Widerstandes und eines Kondensators vereinigen. Endlich können im Sekundärkreise des Teslatransformators Vorrichtungen verwendet werden, die eine starke Sprühwirkung ergeben, wie z. B.

   Spitzenreihen, welche mit dem Hochswpannungspol   des Teslatransformators   in leitender Verbindung stehen. 



   Alle diese Mittel haben zur Folge, dass die Kurvenform der Schwingung stark asym-   metrisch   wird. Die Röhre leuchtet daher, mit solchen   stark asymmetrischen Wechselströmen   
 EMI1.2 
 



   Zur Erzeugung der Wechselströme können einfache oder seriengeschaltete Löschfunkenstrecken sowie alle sonstigen bekannten   Vorrichtungen dienen,   sofern auch sie zur Zerstörung der   Kurvensymmetrie   verwendbar sind, beispielsweise die einfache oder unterteilte Induktionsfunkenstrecke sowie der einfach- oder seriengeschaltete Lichtbogen. 



   Ein Ausführunjgsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt. 



  Darin bedentet t eine Wechselstromtransformator für eine   Sekundärspannung   von einigen   tausend Voit, der primär   an oin Wechselstromnetz angelegt gedacht ist. h ist   der   transformator, dessen   Sekundärwicklung mit dem   einen Pol an die Erde e, mit dem anderen Pul an die Kathode der Röntgenröhre r geführt ist. Die Primärspule des Teslatransformators liegt in   Reihe mit einem Kondensator c und gemäss   der Erfindung   mit etner Wienschen     Löschröhre q oder einer anderen dämpfenden Vorrichtung. diese Reihenschaltung liegt   parallel mit einer Funkenstrecke y an der   Sekundärwicklung   des Transformators t. 



   Statt der dämpfenden Vorrichtung q im Primärkreise des Teslatransformators oder neben ihr kann auch eine im Sekundärkreis, z. B. an der Stelle q', eingeschaltet wurden. 

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



   <Desc / Clms Page number 1>
 



    Device for generating X-rays by means of high-tension Tesla currents that are only cathodically fed to the tube.
 EMI1.1
   Equality of the positive and negative half-waves the X-ray tube gets closed light.



   In order to achieve a closure-free operation of the X-ray tube, according to the foundation either in the primary or secondary circuit of the Tesla transformer, devices are used that draw energy and thereby cause a strong damping of the high-frequency oscillations, i.e. an asymmetry in the waveform of the high-frequency current.



   Devices of the type mentioned are, for. B. the Wien extinguishing device, which can be arranged both in the primary circuit and in the secondary circuit of the Tesla transformer. furthermore resistors and capacitors, which can also be connected in the primary circuit or in series with the X-ray tube. Particularly suitable are capacitors with a dielectric, which causes a large dielectric hysteresis work, in particular also capacitors which have a relatively low insulation resistance, that is to say combine the role of a large resistor and a capacitor. Finally, devices can be used in the secondary circuit of the Tesla transformer, which give a strong spray effect, such. B.

   Rows of tips which are in conductive connection with the high voltage pole of the Tesla transformer.



   All of these means have the consequence that the curve shape of the oscillation becomes strongly asymmetrical. The tube therefore glows with such strongly asymmetrical alternating currents
 EMI1.2
 



   Simple or series-connected extinguishing spark gaps and all other known devices can be used to generate the alternating currents, provided that they can also be used to destroy the curve symmetry, for example the simple or divided induction spark gap and the single or series-connected arc.



   An embodiment of the invention is shown schematically in the drawing.



  It means an AC transformer for a secondary voltage of a few thousand Voits, which is primarily intended to be connected to an AC network. h is the transformer, the secondary winding of which is connected with one pole to earth e and the other pulse to the cathode of the X-ray tube r. The primary coil of the Tesla transformer is in series with a capacitor c and according to the invention with a Wien extinguishing tube q or another damping device. this series connection is connected in parallel with a spark gap y to the secondary winding of the transformer t.



   Instead of the damping device q in the primary circuit of the Tesla transformer or next to it, one in the secondary circuit, e.g. B. at the point q ', were switched on.

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

 

Claims (1)

PATENT-ANSPRUCH : Einrichtung zur Erzeugung von Röntgenstrahlen mittels hochgespannten, der Röhre EMI1.3 einer unsymmetrischen Kurvenform im Primärkreise oder Sekundärkreise des Teslatransformators oder in beiden Vorrichtungen, welche eine starke Dämpfung bewirken (z. B. Wider- stände, Kondensatoren mit grosser dielektrischer Hysterese, Löschröhren, eine Sprühwirkung ausübende Spitzenreihen) angeordnet werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Device for generating x-rays by means of high tension, the tube EMI1.3 an asymmetrical curve shape in the primary circuit or secondary circuit of the Tesla transformer or in both devices, which cause strong attenuation (e.g. resistors, capacitors with high dielectric hysteresis, extinguishing tubes, rows of tips with a spray effect). ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT63873D 1912-06-07 1912-06-07 Device for generating X-rays by means of high-tension Tesla currents that are only cathodically fed to the tube. AT63873B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT63873T 1912-06-07

Publications (1)

Publication Number Publication Date
AT63873B true AT63873B (en) 1914-03-10

Family

ID=3585819

Family Applications (1)

Application Number Title Priority Date Filing Date
AT63873D AT63873B (en) 1912-06-07 1912-06-07 Device for generating X-rays by means of high-tension Tesla currents that are only cathodically fed to the tube.

Country Status (1)

Country Link
AT (1) AT63873B (en)

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