TRANSFORMER UNIT Russian patent published in 1998 - IPC

FIELD: converting units including frequency step-up inductive devices. SUBSTANCE: transformer unit has toroidal transformer and current-carrying buses connecting transformer to load. Transformer secondary winding is formed by two interconnected bifilar conducting strips. Annular depression made in at least one of strips accommodates toroidal core with primary winding distributed over its surface. Current- carrying buses insulated from each other and from secondary winding are formed by sections of bifilar strips placed on external side of transformer. In this way, secondary winding and current-carrying buses are built integral. EFFECT: reduced loss, simplified design. 2 dwg