DE453285C - Device for frequency multiplication - Google Patents
Device for frequency multiplicationInfo
- Publication number
- DE453285C DE453285C DEL65881D DEL0065881D DE453285C DE 453285 C DE453285 C DE 453285C DE L65881 D DEL65881 D DE L65881D DE L0065881 D DEL0065881 D DE L0065881D DE 453285 C DE453285 C DE 453285C
- Authority
- DE
- Germany
- Prior art keywords
- transformers
- frequency
- frequency multiplication
- transformer
- switched
- 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
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/03—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source using non-linear inductance
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Ac-Ac Conversion (AREA)
Description
453265453265
Bei der Frequenzvervielfachung mittels wechselstrommagnetisierter Transformatoren
tritt häufig der Fall auf, daß die Maschinenspannung zu gering ist, um den hohen Anfangsselbstinduktionswert
zu überwinden. Zwecks Beseitigung, dieses Übelstandes hat man bereits verschiedene Mittel vorgeschlagen,
wie z. B. künstliches Herabdrücken des Selbstinduktionskoeffizienten der Eisenhochfrequenztransformatoren
durch momentanes Einschalten von Gleichstrom, wodurch der Transformator einen Moment mit Gleichstrom
magnetisiert wird oder durch. Verändern der Frequenz der Hochfrequenzmaschine usw. Alle
diese Mittel sind für den praktischen Betrieb mehr oder weniger umständlich. Ferner besteht
die Gefahr des Durchschlagene der Transformatoren, sobald die gesamte Leistung der Maschine plötzlich auf den Transformator
geschaltet wird. Es treten hier unkontrollierbare Momentanspannungen auf, die ein Mehrfaches
der Betriebsspannung betragen können und zu Wicklungsdurchschlägen führen.
Gemäß der vorliegenden Erfindung werden die genannten Übelstände dadurch beseitigt,
daß an Stelle eines Transformators mehrere in Serie geschaltete Transformatoren verwendet werden, die z. B. mittels elektromagnetischer
Schützen der Reihe nach eingeschaltet werden. Man erreicht dadurch, daß der Betrag der Anfangsselbstinduktion
nur ein Teil ist, und zwar je nach der in Serie geschalteten Zahl der Transformatoren
reduziert wird; ebenso wird die auftretende Spannung nur ein Teil der Gesamtspannung.In the case of frequency multiplication by means of alternating current magnetized transformers, the case often occurs that the machine voltage is too low to overcome the high initial self-induction value. For the purpose of eliminating this deficiency, various means have already been proposed, such. B. Artificially lowering the self-induction coefficient of the iron high-frequency transformers by momentarily switching on direct current, whereby the transformer is magnetized for a moment with direct current or by. Changing the frequency of the high frequency machine, etc. All of these means are more or less cumbersome for practical operation. There is also the risk of the transformers breaking down as soon as the entire power of the machine is suddenly switched to the transformer. Uncontrollable instantaneous voltages occur here, which can be a multiple of the operating voltage and lead to winding breakdowns.
According to the present invention, the abovementioned inconveniences are eliminated in that, instead of a transformer, several transformers connected in series are used which, for. B. be switched on in sequence by means of electromagnetic contactors. The result is that the amount of the initial self-induction is only a part, and is reduced depending on the number of transformers connected in series; likewise, the stress that occurs is only part of the total stress.
In der Zeichnung ist ein Ausführungsbeispiel gegeben. An exemplary embodiment is given in the drawing.
Es bedeutet M die Hochfrequenzmaschine, die über den Kondensator Cm und Selbstinduktion Lm mit den Transformatoren T1, T2, Ts auf Kippresonanz abgestimmt wird. An den Enden der in Serie geschalteten Transformatoren U, V liegt der auf· höhere Frequenz abgestimmte Stoßkreis mit der Kapazität Cs und Ls. Im Moment des Einschaltens sind die Transformatoren T1 und T2 mittels der Schützen S1, S2 kurzgeschlossen, so daß nur der Transformator T% angeschlossen ist. Die Schützen können so eingestellt werden, daß nach einem Bruchteil einer Sekunde die Transformatoren T2 und T1 der Reihe nach eingeschaltet werden können. Dieselbe Anordnung kann auch, bei wiederholter Frequenztransformation bei den einzelnen Frequenzwandlern der einzelnen Stufen verwen-Set werden, wo ganz besondere Schwierigkeiten in bezug auf Einspringen der Transformatoren entstehen. Hier kann man vorteilhaft auch noch die Einschaltung der zusätzlichen Wandler bei den einzelnen Stufen nacheinander vornehmen. M means the high-frequency machine which is tuned to breakover resonance via the capacitor C m and self-induction L m with the transformers T 1 , T 2 , T s. At the ends of the transformers U, V connected in series, there is the surge circuit, tuned to the higher frequency, with the capacitance Cs and L s . At the moment of switching on the transformers T 1 and T 2 are short-circuited by means of the contactors S 1 , S 2 , so that only the transformer T% is connected. The contactors can be set so that after a fraction of a second the transformers T 2 and T 1 can be switched on in sequence. The same arrangement can also be used with repeated frequency transformation in the individual frequency converters of the individual stages, where very particular difficulties arise with regard to the transformers jumping in. Here you can also switch on the additional converters for the individual stages one after the other.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL65881D DE453285C (en) | Device for frequency multiplication |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL65881D DE453285C (en) | Device for frequency multiplication |
Publications (1)
Publication Number | Publication Date |
---|---|
DE453285C true DE453285C (en) | 1927-12-01 |
Family
ID=7281451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL65881D Expired DE453285C (en) | Device for frequency multiplication |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE453285C (en) |
-
0
- DE DEL65881D patent/DE453285C/en not_active Expired
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