Transformers are normally used in systems to change power from one voltage (or current) to another.
This is often driven by a desire to optimize the overall system characteristics, e.g., economics, reliability,
or performance. To achieve these system goals, a purchaser must specify-and a designer must
configure-the transformer to meet a desired impedance, voltage rating, power rating, thermal charac-
teristic, short-circuit strength, sound level, physical size, and voltage-withstand capability. Obviously,
many of these goals will produce requirements that are in conflict, and prudent compromise will be
required. Failure to achieve an acceptable characteristic for any of these goals will make the overall
transformer design unacceptable. Transformer characteristics and the concomitant design process are
outlined in the literature [1-4].