Abstract
Structure and characteristics of step-up transformers using iron cores are discussed for pulsed power applications. The characteristics are compared with that of air core transformers and it is shown that by using the transformer it is possible to obtain an efficient and fast energy transfer. Four types of low inductance, highly insulated transformers are introduced or proposed, i.e., induction adder type, multi-layered coaxial winding conductor type, strip winding type, and race track type transformers. The characteristics of each transformer are evaluated and suitable applications are described with estimated inductance. Sufficiently low inductance is shown to be realized with high voltage insulation in these transformers.