AT210955B - Circuit arrangement for grid control of electrical discharge vessels - Google Patents
Circuit arrangement for grid control of electrical discharge vesselsInfo
- Publication number
- AT210955B AT210955B AT246558A AT246558A AT210955B AT 210955 B AT210955 B AT 210955B AT 246558 A AT246558 A AT 246558A AT 246558 A AT246558 A AT 246558A AT 210955 B AT210955 B AT 210955B
- Authority
- AT
- Austria
- Prior art keywords
- grid
- circuit arrangement
- electrical discharge
- grid control
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
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Schaltungsanordnung zur Gittersteuerung elektrischer Entladungs gefässe
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dabei relativ hochohmig bemessen, so dass der vom Steuersatz gelieferte Spannungswert mit steiler Front praktisch unbehindert und bevorzugt seinen Weg über die Kapazität zur Primärwicklung des Wandlers nehmen wird.
Eine beispielsweise Asuftihrung für die Anwendung der Erfindung veranschaulicht die Figur der Zeichnung. Soweit für die grundsätzliche Schaltung der Erfindung wieder die gleichen Schaltelemente vorhanden sind wie im Stammpatent, sind der Einfachheit halber für diese Schaltelemente die gleichen Bezugszeichen wie im Stammpatent beibehalten worden.
Es bezeichnet also 1 den Transformator, über welchen die Gitterkathodenkreise zweier Entladungs- strecken eines Stromrichters gespeist werden. Die Sekundärwicklung des Transformators 1 zusammen mit den beiden Ventilen2 und 3, der Glättungsdrossel 4 und dem Belastungswiderstand 5 mit dem parallel geschalteten Kondensator bilden eine Mittelpunktschaltung. 7a und 7b bezeichnen zwei sättigungsfähige Drosseln, welche in Reihe liegen mit einem Ventil 8a mit Parallelwiderstand 10a bzw. einem Ventil 8b in Parallelschaltung mit einem Widerstand lOb, so dass je eine Transduktoranordnung entsteht, die mit Sättigungswinkelsteuerung arbeitet.
An die Stelle der nach dem Stammpatent benutzten Arbeitswiderstän- de, an welchen die Gitterspannung abgegriffen wird, sind nunmehr Ausgangstransformatoren (übertrager) 11 bzw. 12 getreten. Im Primärkreis jedes dieser Transformatoren 11 bzw. 12 liegt gemäss der vorliegenden Erfindung zusätzlich zu der grundsätzlichen Schaltung nach dem Stammpatent jeweils eine Parallelschaltung aus einem Kondensator 13 bzw. 15 und einem ohmschen Widerstand 14 bzw. 16. Für den einen der Transformatoren, und zwar 11, ist in dem Schaltbild noch die weitere Schaltung bis zu der einen steuerbaren Entladungsstrecke 17 des Stromrichters dargestellt. Die Sekundärwicklung des Transformators 11 speist über ein Ventil 18 den Widerstand 19. An diesen Widerstand 19 ist ein Längswiderstand 20 mit parallel geschaltetem Ventil 21 angeschlossen.
An dieser Parallelschaltung liegt das Gitter 17a des Stromrichters 17. Parallel zur Gitterkathodenstrecke der Entladungsstrecke des Stromrichters liegt ein Gitterkondensator 22.23 bezeichnet die negative Sperrspannungsquelle für den Gitterkathodenkreis. Das Ventil 18 erfüllt, wie zu übersehen ist, die Funktion, dass an das Gitter 17a der Entladungsstrecke 17 des Stromrichters nur die positiven Impulse gelangen, welche von dem Transformator 11 geliefert werden, während die negativen Impulse über das Ventil 18 gesperrt werden. Das Ventil 21 parallel zum Gitterstrom-Begrenzungswiderstand 20 soll die Entionisierung des Gitters 17anach der Brennzeit derEntladungs- strecke begünstigen.
PATENTANSPRÜCHE :
1. Schaltungsanordnung zur Gittersteuerung elektrischer Entladungsgefässe eines Stromrichters nach Patent Nr. 207458, dadurch gekennzeichnet, dass in Reihe mit der steuerbaren Drossel als Schaltungselement für die Abnahme der Steuerspannung des Gitters des Stromrichters ein Wandler mit gegeneinander elektrisch isolierten Wicklungen liegt, der an seiner Primärwicklung über eine Parallelschaltung aus einem Kondensator und einem ohmschen Widerstand gespeist wird und an seiner Sekundärwicklung die Steuerspannung für das Gitter des Stromrichters liefert.
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Circuit arrangement for grid control of electrical discharge vessels
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dimensioned to be relatively high resistance, so that the voltage value supplied by the tax rate with a steep front is practically unhindered and preferably takes its way via the capacitance to the primary winding of the converter.
An example of a guide to the application of the invention illustrates the figure of the drawing. Insofar as the same switching elements are present for the basic circuit of the invention as in the parent patent, the same reference numerals have been retained for these switching elements as in the parent patent for the sake of simplicity.
So 1 denotes the transformer via which the grid cathode circuits of two discharge paths of a converter are fed. The secondary winding of the transformer 1 together with the two valves 2 and 3, the smoothing choke 4 and the load resistor 5 with the capacitor connected in parallel form a midpoint circuit. 7a and 7b designate two saturable chokes, which are in series with a valve 8a with a parallel resistor 10a and a valve 8b in parallel with a resistor 10b, so that a transductor arrangement is produced which works with saturation angle control.
Output transformers 11 and 12 have now taken the place of the working resistors used according to the parent patent, at which the grid voltage is tapped. According to the present invention, in the primary circuit of each of these transformers 11 and 12, in addition to the basic circuit according to the parent patent, there is in each case a parallel circuit of a capacitor 13 or 15 and an ohmic resistor 14 or 16. For one of the transformers, namely 11 , the circuit diagram shows the further circuit up to the one controllable discharge path 17 of the converter. The secondary winding of the transformer 11 feeds the resistor 19 via a valve 18. A series resistor 20 with a valve 21 connected in parallel is connected to this resistor 19.
The grid 17a of the converter 17 is connected to this parallel circuit. A grid capacitor 22.23 is located parallel to the grid cathode path of the discharge path of the converter. 23 denotes the negative reverse voltage source for the grid cathode circuit. As can be overlooked, the valve 18 fulfills the function that only the positive pulses which are supplied by the transformer 11 reach the grid 17a of the discharge path 17 of the converter, while the negative pulses are blocked via the valve 18. The valve 21 parallel to the grid current limiting resistor 20 is intended to promote the deionization of the grid 17 after the burning time of the discharge path.
PATENT CLAIMS:
1. Circuit arrangement for grid control of electrical discharge vessels of a converter according to patent no. 207458, characterized in that in series with the controllable choke as a circuit element for the decrease of the control voltage of the grid of the converter, a converter with mutually electrically isolated windings is connected to its primary winding a parallel connection of a capacitor and an ohmic resistor is fed and supplies the control voltage for the grid of the converter on its secondary winding.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT207458D | |||
DE210955X | 1957-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT210955B true AT210955B (en) | 1960-09-10 |
Family
ID=25607799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT246558A AT210955B (en) | 1957-12-04 | 1958-04-04 | Circuit arrangement for grid control of electrical discharge vessels |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT210955B (en) |
-
1958
- 1958-04-04 AT AT246558A patent/AT210955B/en active
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