Cloth-transformer with divided windings and tension annealed amorphous wire.

Magnetic devices with cloth-structure have a plain shape, large value of inductance and large current capacity. Introducing the idea of divided windings, we realized a cloth-transformer which has an arbitrary winding ratio and small stray capacitance between the windings. In order to improve the characteristics of the device, we tried to use both annealed amorphous wire and thinner wire for the device's core. The permeability of the amorphous wire is controlled by the tension at the annealing. It was suggested that improvement of the frequency characteristics can be achieved by decreasing the wire diameter.