This chapter discusses the investigation of proposed pulse width-modulated circuits that use the foreseen larger breakdown, faster switching solid-state devices to create a current pulse supply. Simulations demonstrated that the proposed pulse width-modulated circuits are compatible with the existing railgun supply and that they provide energy-saving benefits over the existing railgun supply. Results from a lower voltage current pulse supply test are presented here. The results of this lower voltage design and testing are shown to be applicable, through the use of simulations, to the end goal of the medium-voltage current pulse supply. When wide bandgap switches capable of large current conduction are available, the improved current control characteristics of the proposed circuits enable significant energy transfer savings for the railgun application. Additionally, modified converters are discussed that could result in additional energy savings in the railgun application.