Designing pulse transformers for small size

Size reduction is achieved by using reset cores and the design method is embodied in a chart, based on 3% Si-steel cores, kG, and matching impedances. The chart can be used to find coil and core dimensions for a given rating. Resetting bias may be required, and a separate inductor; in a typical case the bias inductor has 16% of the pulse transformer weight. Current use is mainly in high power applications, such as air-route surveillance radar.