Characteristics of sheet windings in transformers

Sheet and foil windings are finding increasing use in apparatus ranging in size from small automotive components to medium-sized power transformers. The growing popularity of such windings lies in certain electrical and mechanical advantages over conventional helically wound coils. In addition, sheet conductor material can now be economically produced with a high degree of dimensional accuracy, with smooth and burr-free edges, and free to a high degree from dirt and metallic dust particles