RINGKERNTRANSFORMATOR MIT MINDESTENS ZWEI WICKLUNGEN.

摘要

A tonoidal transformer has two independent windings (6,10) each winding being wound concentrically about the core (9). The windings are spaced apart from each other by insulating spacer rings (7). The outer windings (6) consists of a flexible conductor which is not self-supporting, the winding being wound over the spacer rings such that the spacer rings determine the spacing (9) between the inner and the outer winding. The spacer rings may be wedge-shaped or arcuate in section so that they centre themselves on the core. The rings may have ventilation apertures. The rings may have projection which extend into the gap between the windings. The opposite sides of the rings may have radia ridges or depressions to increase the surface creepage distance between the windings. The inner and outer edges of the rings may have depressions to accommodate the turns of the outer winding.