DE327122C - Device for extracting phase parts from an alternating current - Google Patents
Device for extracting phase parts from an alternating currentInfo
- Publication number
- DE327122C DE327122C DENDAT327122D DE327122DD DE327122C DE 327122 C DE327122 C DE 327122C DE NDAT327122 D DENDAT327122 D DE NDAT327122D DE 327122D D DE327122D D DE 327122DD DE 327122 C DE327122 C DE 327122C
- Authority
- DE
- Germany
- Prior art keywords
- alternating current
- phase parts
- electrons
- extracting phase
- alternating
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/50—Passing the tube current only during a restricted portion of the voltage waveform
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Description
Einrichtung zum Herausgreifen von' Phasenteilen aus einem Wechselstrom, Die Erfindung bezieht sich auf eine - Einrichtung zum Herausgreifen -von Phasenteilen aus einem Wechselstrom, bei der ein Teil der StrombahnTVOn einer Entladungsstrecke gebildet wird, in die nur während des dem herauszugreifenden Phasenteile. - des Wechselstromes entsprechenden Zeitabschnittes Elektronen in den Stromweg eingeführt werden. Eine derartige Einrichtung ist für zählreiche Zwecke der Technik, besonders für die Röntgentechnik, verwendbar, wo es sich darum handelt, nur bestimmte Phasenteile eines Wechselstromes -dem Stromverbraucher zuzuführen. Eine solche Einrichtung beruht auf dem Grundgedanken, daß die in den Stromweg einzuführenden Elektronen durch zweckentsprechend gesteuerte Kraftfelder nur in den Zeitabschnitten in den Wechselstromkreis übertreten, in denen der Wechselstrom gerade die jeweils gewünschte Phase hat.Device for picking out phase parts from an alternating current, The invention relates to a device for picking out phase parts from an alternating current in which part of the current path TVOn is a discharge path is formed in the phase parts to be picked out only during the. - of Alternating current corresponding time period electrons introduced into the current path will. Such a device is particularly useful for a variety of technical purposes for X-ray technology, usable where it is a question of only certain phase parts an alternating current -to the power consumer. Such a facility is based on the basic idea that the electrons to be introduced into the current path through appropriately only transfer controlled force fields into the alternating current circuit in the periods of time in which the alternating current has just the desired phase.
Die Erfindung betrifft eine besondere Ausführungsform einer derartigen Einrichtung, bei der die Steuerung des die Elektroneneinführung beeinflussenden Kraftfeldes durch äußerst einfache Mittel bewirkt wird.The invention relates to a particular embodiment of such a Device in which the control of the electron introduction influencing Force field is effected by extremely simple means.
Auf der Zeichnung ist eine Ausführungsform der Einrichtung schematisch dargestellt. i ist die beispielsweise durch eine Batterie B geheizte Glühkathode einer Röntgenröhre, 2 eine vorzugsweise gitterförmige Elektrode, und 3 eine Anode. Zwischen den Elektroden 2 und 3 liegt die Wechselstromquelle W, z. B. die Sekundärspule eines Transformators, während zwischen der Glühkathode i und der Elektrode z eine Gleichstromquelle Y in Hintereinanderschaltung mit einer Wechselspannung S liegt. Beim Betriebe dieser Einrichtung besteht nur während der Zeit, in der die Wechselspannung S die Spannung der Gleichstromquelle Y übertrifft, ein derart gerichtetes Feld zwischen den Elektroden z und 2, daß nur während dieser Zeit Elektronen aus der Glühkathode i herausgezogen und in den Stromweg 2, 3, W eingeführt. werden können. Durch Regelung der Phase der Wech@eIspannung S kann der Zeitabschnitt, während dessen Elektronen in die Strombahn der Wechselstromquelle übertreten, beliebig geregelt und auf diese Weise jeder beliebige Phasenteil der Wechselstromquelle W herausgegriffen werden.An embodiment of the device is shown schematically in the drawing shown. i is the hot cathode heated by a battery B, for example an X-ray tube, 2 a preferably grid-shaped electrode, and 3 an anode. Between the electrodes 2 and 3 is the alternating current source W, for. B. the secondary coil a transformer, while between the hot cathode i and the electrode z a Direct current source Y is connected in series with an alternating voltage S. When operating this device, there is only during the time in which the AC voltage S exceeds the voltage of the direct current source Y, such a directional field between the electrodes z and 2 that only during this time electrons from the hot cathode i pulled out and inserted into the current path 2, 3, W. can be. By regulation the phase of the alternating voltage S can be the period during which electrons into the current path of the alternating current source, arbitrarily regulated and on this Way, any phase part of the AC power source W can be picked out.
Wie ersichtlich, arbeitet die beschriebene Einrichtung mit sehr einfachen Mitteln und vermeidet u. -a. die Verwendung von rotierenden Schaltern o. dgl.As can be seen, the device described works with very simple ones Means and avoids, among other things. the use of rotating switches or the like.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE327122T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE327122C true DE327122C (en) | 1920-10-07 |
Family
ID=6184627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT327122D Expired DE327122C (en) | Device for extracting phase parts from an alternating current |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE327122C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE965251C (en) * | 1949-03-22 | 1957-06-06 | Philips Nv | Circuit for converting a variable DC voltage into a DC voltage that changes in opposite directions |
-
0
- DE DENDAT327122D patent/DE327122C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE965251C (en) * | 1949-03-22 | 1957-06-06 | Philips Nv | Circuit for converting a variable DC voltage into a DC voltage that changes in opposite directions |
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