Open AccessGeneration of sub-nanosecond pulses using peaking capacitor
Author(s) -
Madhu Palati,
Renu Agarwal,
Archana Sharma,
G.R. Nagabhushana
Publication year - 2017
Publication title -
journal of electrical systems and information technology
Language(s) - English
Resource type - Journals
ISSN - 2314-7172
DOI - 10.1016/j.jesit.2016.10.010
Subject(s) - nanosecond , capacitor , marx generator , spark gap , rise time , capacitance , voltage , electrical engineering , inductance , materials science , decoupling capacitor , generator (circuit theory) , physics , optoelectronics , engineering , power (physics) , optics , electrode , laser , quantum mechanics
This paper discusses the analysis, simulation and design of a peaking circuit comprising of a peaking capacitor, spark gap and load circuit. The peaking circuit is used along with a 200 kV, 20 J Marx generator for generation of sub-nanosecond pulses. A high pressure chamber to accommodate the peaking circuit was designed and fabricated and tested upto a pressure of 70 kg/cm2. Total estimated values of the capacitance and inductance of the peaking circuit are 10 pF and 72 nH respectively. At full charging voltage, the peaking capacitor gets charged to a peak voltage of 394.6 kV in 15 ns. The output switch is closed at this instant. From Analysis & Simulation, the output current & rise time (with a matched load of 85 Ω) are 2.53 kA and 0.62 ns