AT135410B - Device to ensure the correctness of the X-ray tube current measurement in X-ray systems in Villard's circuit - Google Patents

Device to ensure the correctness of the X-ray tube current measurement in X-ray systems in Villard's circuit

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Publication number
AT135410B
AT135410B AT135410DA AT135410B AT 135410 B AT135410 B AT 135410B AT 135410D A AT135410D A AT 135410DA AT 135410 B AT135410 B AT 135410B
Authority
AT
Austria
Prior art keywords
ray tube
ray
villard
correctness
circuit
Prior art date
Application number
Other languages
German (de)
Inventor
Carl Dipl Ing Niemann
Friedrich Dipl Ing Claasen
Original Assignee
Siemens Reiniger Veifa
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 Reiniger Veifa filed Critical Siemens Reiniger Veifa
Application granted granted Critical
Publication of AT135410B publication Critical patent/AT135410B/en

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  • X-Ray Techniques (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
Bei Einrichtungen zur Röntgenstrahlenerzeugung mit Kondensatoren und Ventilen in Villard'seher Schaltungsanordnung, die entsprechend Fig. 1 aus einem Hochspannungstransformator   1,   den Konden- 
 EMI1.2 
 
Strom   ausschliesslich   durch die Ventilröhre, der sie entladende Strom ausschliesslich durch die Röntgenröhre fliessen. Ein im Stromkreise der Röntgenröhre liegendes Strommessgerät 6 zeigt in diesem Fall den Gebrauchsstrom richtig an.

   (Unter Gebrauchsstrom ist hiebei der Strom verstanden, der in der   Röntgenröhre in dem dazu bestimmten Brennfleck Röntgenstrahlen erzeugt. ) Wenn die Röntgenröhre   jedoch in der Richtung Anode-Kathode Strom durchlässt, was nicht selten, auch ohne dass es bemerkt wird, vorkommt, erlauben die Angaben   des Messgerätes   keine sicheren   Rückschlüsse   auf den Gebrauchsstrom. Das führt zu   Fehlbeliehtungen oder Uberdosierungen.   



   Die Richtigkeit der Strommessung lässt sieh   erfindungsgemäss   dadurch sichern, dass, entsprechend Fig. 2, das zwischen Röntgenröhre und Ventilröhre liegende Messinstrument in Reihe mit einem Ventil 7 liegt, welches den Strom in Richtung des Nutzstromes   durchlässt,   während ein zweites Ventil 8 parallel zu   dieser Messanordnung   derart liegt, dass es für den die Röntgenröhre in verkehrter Richtung durchfliessenden Strom durchlässig ist. 



   Als Ventile 7, 8 werden zweckmässig Kupferoxydulgleichrichter verwendet. Diese können vorteilhaft in das   Strommessgerät   eingebaut sein. 

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



   <Desc / Clms Page number 1>
 
 EMI1.1
 
In devices for X-ray generation with capacitors and valves in Villard's circuit arrangement, which according to FIG. 1 from a high-voltage transformer 1, the condenser
 EMI1.2
 
Electricity flows exclusively through the valve tube, the discharging current flows exclusively through the X-ray tube. An ammeter 6 located in the circuit of the x-ray tube correctly displays the current in use in this case.

   (Usage current is understood here as the current that generates X-rays in the X-ray tube in the designated focal point.) However, if the X-ray tube allows current to pass in the direction of the anode-cathode, which often happens without being noticed, they allow Information provided by the measuring device does not allow any reliable conclusions to be drawn about the current in use. This leads to misleading or overdosing.



   According to the invention, the correctness of the current measurement can be ensured by the fact that, according to FIG. 2, the measuring instrument located between the X-ray tube and valve tube is in series with a valve 7, which lets the flow through in the direction of the useful flow, while a second valve 8 is parallel to this measuring arrangement is located such that it is permeable to the current flowing through the X-ray tube in the wrong direction.



   Copper oxide rectifiers are expediently used as valves 7, 8. These can advantageously be built into the ammeter.

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

 

Claims (1)

PATENT-ANSPRUCH : Einrichtung zur Sicherung der Richtigkeit der Röntgenröhrenstrommessung bei Röntgenanlagen mit Villard'seher Schaltung, dadurch gekennzeichnet, dass das zwischen Röntgenröhre und Ventilröhre EMI1.3 lässig ist und dass parallel zu dieser Messanordnung ein zweites Ventil derart liegt, dass es für entgegen dem Nutzstrom gerichtete Ströme durchlässig ist. EMI1.4 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Device to ensure the correctness of the X-ray tube current measurement in X-ray systems with Villard's circuit, characterized in that between the X-ray tube and valve tube EMI1.3 is permeable and that a second valve is located parallel to this measuring arrangement in such a way that it is permeable to currents directed against the useful flow. EMI1.4 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT135410D 1930-07-03 1931-06-22 Device to ensure the correctness of the X-ray tube current measurement in X-ray systems in Villard's circuit AT135410B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE135410X 1930-07-03

Publications (1)

Publication Number Publication Date
AT135410B true AT135410B (en) 1933-11-10

Family

ID=5665942

Family Applications (1)

Application Number Title Priority Date Filing Date
AT135410D AT135410B (en) 1930-07-03 1931-06-22 Device to ensure the correctness of the X-ray tube current measurement in X-ray systems in Villard's circuit

Country Status (1)

Country Link
AT (1) AT135410B (en)

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