A Novel Marx Generator Topology Design for Low Source Impedance

The typical Marx generator designs employ a single stage switch, which usually results in a high source inductance, and ultimately high source impedance, relegating the Marx generator to the role of a high voltage pulse- charging source. A low impedance Marx generator may be used to directly source low impedance loads, such as high power microwave loads. Applied Physical Electronics, L.C. (APELC) has developed a new Marx topology based on distributed stage capacitance and parallel stage switches that has been demonstrated to reduce the generator's series inductance. The erected Marx voltage is 1 MV, with a source impedance of 18 Omega. This paper discusses the Marx topology, with demonstrations made to illustrate the topology's effectiveness for the APELC MG20-24C-2000PF.