Precise ratio transformer: a new concept of the magnetic system

A new magnetic system in which the winding's position is inverted with respect to the cores has been developed. This allows increased efficiency of use of the magnetic core material, simplified shielding of the windings, and a decrease in the length of windings in a precise ratio transformer. The uncertainty of the voltage ratio can be decreased to the order of 10/sup -9/ in both single- and two-stage versions of the transformer.