Noise supressing isolation transformer

Abstract From the Canadian patent

A transformer apparatus which includes a core and first and second coils which are each magnetically coupled to the core. Each coil is generally cylindrical and has a circumferential surface and first and second axial extremities. Shielding is disposed around at least the first coil comprising a web shaped metallic non-magnetic, electri-, cally conductive generally rectangular member. The member has a first portion extending around substantially the entire circumferential extent of at least one coil and the member further includes second and third portions extending respectively about a substantial portion of each of the first and second axial extremities.