Topic
Marx generator
About: Marx generator is a research topic. Over the lifetime, 1276 publications have been published within this topic receiving 8970 citations.
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01 Jan 1984
TL;DR: In this article, a study of common configurations of the Marx generator, comparing them and selecting the most suitable for the purpose, is presented, with suggestions on the method to be followed to determineparameters and indicate practical criteria which facilitategeneration of waveshapesof thistype.
Abstract: When impulsevoltagesof very short time to half-valueare generatedwith a standardMarx circuit,theremay be a considerabledecreasein effi- ciency. In order to keep this decreasewithinacceptable values,the authorshaveapproachedthe problemwithan in-depthstudyof themost common configurations of the Marx generator, comparingthem and selectingthe most suitablefor the purpose. The authorsgive suggestionson the methodto be followedto determineparameters and indicatepractical criteriawhich facilitategenerationof waveshapesof thistype.
01 Jan 2012
TL;DR: In this paper, a matched reflex triode has been used to drive a Marx generator to generate relativistic electron beams and high power microwaves, which is suitable to drive the triode directly.
Abstract: A compact repetitive Marx generator and a High Power Microwave (HPM) source based on a matched reflex triode has been developed and tested. The Marx generator rated at 1 kJ, 300 kV, 12 kA, 10 Hz, is suitable to drive the reflex triode directly. Bipolar charging of the Marx generator has been used to get lower system inductance and consequently faster output rise time with relatively low charging voltage. Inductive charging of the Marx generator capacitors using a capacitor charging power supply has been used to make the system repetitive and enhance the system efficiency as compared to resistive charging. The Marx generator has been characterized using aqueous resistive load and the reflex triode vircator. Experiments have been conducted using the Marx generator and reflex triode system to generate intense relativistic electron beams and high power microwaves.
TL;DR: A compact Marx generator was built to mimic a spark-gap Tesla transformer and tolerated larger circuit-parameter perturbations than is expected for conventional Tesla transformers.
Abstract: A compact Marx generator was built to mimic a spark-gap Tesla transformer. The generator produced radio-frequency pulses of up to ±200 kV and ±15 A with a frequency between 110 and 280 kHz at a repetition rate of 120 Hz. The generator tolerated larger circuit-parameter perturbations than is expected for conventional Tesla transformers. Possible applications include research on the control and laser guiding of spark discharges.
Patent•
07 Jul 2020
TL;DR: In this paper, a dynamic characteristic testing device and method for power semiconductor device characteristic testing is presented. But the authors focus on an RBDT dynamic characteristic test device and their method, and the device comprises a Marx generator, a pulse discharge circuit comprising a to-be-tested RBDTs, a charger, a first current-limiting resistor, and a first diode.
Abstract: The invention belongs to the field of power semiconductor device characteristic testing, and particularly relates to an RBDT dynamic characteristic testing device and method, and the device comprisesa Marx generator, a pulse discharge circuit comprising a to-be-tested RBDT, a charger, a first current-limiting resistor, and a first diode; the charger controls the charging of the Marx generator andthe pulse discharge circuit; the Marx generator is connected in series with the to-be-tested RBDT to form a loop, and outputs different trigger voltage pulses to the to-be-tested RBDT after charging;and the first current-limiting resistor and the first diode are arranged on a loop formed by the Marx generator and the to-be-tested RBDT, so that the pulse circuit of the to-be-tested RBDT is prevented from influencing the work of the Marx generator, and meanwhile, a switching device on the Marx generator is protected. Trigger voltage pulses with different dynamic characteristics are output by changing the control mode of the Marx generator, and waveform parameters reflecting the dynamic characteristics of the RBDT are accurately obtained.
TL;DR: In this paper , the impact ionization wave mode conduction threshold of a commercial thyristor was investigated and a four-stage Marx generator was constructed and the amplitude of the output voltage can reach 1869 V.
Abstract: Abstract Recently, a new trigger mode of thyristor which is called shock ionization wave mode is researched. Compared with the conventional trigger mode, this trigger mode can turn on the thyristor rather fast. In this mode, a trigger voltage with a high amplitude and fast rising speed is applied at both ends of the thyristor. Many single-tube conduction experiments are reported while the conduction threshold of shock ionization wave mode has not been investigated. Besides, the application of this trigger mode in some pulse power topology remains blank which is useful for this mode. In this paper, to explore the impact ionization wave mode conduction threshold of commercial thyristor, fast front high voltage nanosecond pulses are generated by avalanche tube Marx circuit. Pulse signals of different amplitudes are realized through the voltage division resistor. The impact ionization wave mode trigger threshold for commercial thyristors is about 2500 V in amplitude and 250 V/ns in voltage rising speed and the higher the rated parameter of the thyristor, the higher the threshold. To broaden the application of this mode, a novel Marx generator based on thyristors is proposed. A four-stage Marx generator is constructed and the amplitude of the output voltage can reach 1869 V.