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 Dec 2015
TL;DR: In this paper, a Marx modulator was developed for high-voltage pulsed power systems using IGBTs and 10 µF capacitors, whose functioning is based on charging capacitors in parallel and discharging them in series into the treatment chamber.
Abstract: High-voltage pulsed power is nowadays a very important research field and an expanding industrial technology with major worldwide economical impact, this technology being used in different applications (food processing, medicine…). For the development of PEF technology, it is necessary to have a wide variation interval of the different pulse parameters (amplitude, pulse width, frequency …). Conventional pulse generators do not allow it, prompting the researchers to focus on the development of pulse generators to make them more versatile to be used in different applications. With the development of solid-state electronics, solid-state devices are becoming more and more suitable for pulsed power application. They could provide the pulsed power systems with compactness, reliability, high repetition rate, and long life time. The rising of pulsed power generators using solid-state devices eliminates limitations of conventional components, and promises pulsed power technology to be widely used in commercial applications. However, solid-state switching devices such as Insulated Gate Bipolar Transistor (IGBT) available now are only rated up to a few kilo Volts. Most of pulsed power systems demand much higher voltage ratings. The aim of the present work is the development of a Marx modulator which is a unique circuit intended for voltage multiplication. Its functioning is based on charging capacitors in parallel and discharging them in series into the treatment chamber. The Marx bank developed comprises four stages, was constructed using 1200 V IGBTs and 10 µF capacitors. This generator is versatile; several factors could be varied such as the voltage level up to 3.6 kV, the repetition rate and the pulse width.
2 citations
01 May 2016
TL;DR: This paper deals with design and implementation of 2 stage solid state Bipolar Marx Generator, a multistage impulse generator able to produce positive, negative and bipolar pulses.
Abstract: Impulse generators were used to generate high voltage pulses. Marx generator is a multistage impulse generator. Conventional Marx generator used spark gap switches. In recent years these switches are replaced with semiconductor switches. The bipolar Marx generator is able to produce positive, negative and bipolar pulses. This paper deals with design and implementation of 2 stage solid state Bipolar Marx Generator. The specifications of Marx Generator are 200 V output voltage, 200 Hz repetitive frequency and a pulse width of 300 μs. The circuit is simulated using MATLAB software and the output obtained is 194 V. Hardware is tested with 50 V input voltage. The output obtained is 92 V.
2 citations
TL;DR: In this paper, two types of circuit models are presented: the Marx generator and the Cockroft-Walton (ladder circuit) for low-voltage accelerator models that can be used either for classroom demonstrations or for laboratory courses.
Abstract: Low‐voltage accelerator models are described that can be used either for classroom demonstrations or for laboratory courses. Two types of circuit models are presented: (1) the Marx generator and (2) the Cockroft–Walton (ladder circuit). These low‐voltage circuit models exhibit the basic characteristics of their high‐voltage counterparts.
2 citations
19 Jun 2011
TL;DR: A low-cost 400-ps rise time Marx generator for low-energy triggering applications has been developed in this article, which is designed into a printed circuit board geometry and uses inexpensive, off-the-shelf components.
Abstract: Some modern pulsed-power applications benefit from a fast-rising trigger pulse which can minimize temporal jitter or ensure a desired mode (e.g. multi-channel spark gap) of breakdown ensues. Applied Physical Electronics, L. C., (APELC) has developed a low-cost 400-ps rise time Marx generator for low-energy triggering applications. The low-cost Marx is designed into a printed circuit board (pcb) geometry and uses inexpensive, off-the-shelf components. In a typical configuration, the Marx has an erected voltage of 10 kV, a stored energy of 5 mJ, and a risetime near 400 ps. The Marx has been operated at a pulse repetition frequency of 250 Hz. Other potential uses include sourcing compact antennas, driving laser diodes, and biological plasma applications.
2 citations
TL;DR: In this article, two low-jitter high-voltage pulse generators with a sub-nanosecond rise time are described, which are connected in the Marx circuit and have the following characteristics: the amplitude of the output pulse developed across a 50Ω load is 50 and 70 kV, respectively; duration of the pulse edge is no more than 0.3 ns; operating frequency is up to 10 pulses/s.
Abstract: Two low-jitter high-voltage pulse generators with a subnanosecond rise time are described. The generators are connected in the Marx circuit and have the following characteristics: the amplitude of the output pulse developed across a 50-Ω load is 50 and 70 kV, respectively; duration of the pulse edge is no more than 0.3 ns; operating frequency is up to 10 pulses/s. The instability of the delay of the pulse edge relative to the edge of the low-voltage triggering pulse does not exceed 10 and 30 ns for the first and second generator, respectively. The generators are designed for exact synchronization of the facility used in experiments on the subnanosecond pulsed breakdown.
2 citations