Abstract: The present invention provides circuits and devices that allow improved performance from pulsed power systems. Some embodiments of the present invention comprise a MARX system; an inductor system in electrical communication with the MARX system; a surge arrestor system in electrical communication with the inductor system; an output switch system in electrical communication with the surge arrestor system; and a crowbar switch system in electrical communication with the output switch system. A static test load can be selectively coupled to the system for example at the output of the output switch or crowbar switch, to allow the system to be easily tested without risk to actual loads. An example static test load can include a plurality of metal oxide varistors connected in an electrical series and placed in electrical communication with the output terminal of the output switch and with the reference potential.