Just scrapped another m.wave. Wasn't operating properly, was old, the display was faulty and what was showing was meaningless. Also sometimes it had started to microwave for no reason at all when the door was closed. Was afraid it might become hazardous, e.g. operate with door faulty or open! So kept a few parts etc. including the heavy 115 to Hi-voltage mains transformer. But could someone remind me, again, why a m.wave oven transformer has those 'shunts' welded across the laminations. There is presumably some DC (or pulses of AC) flowing in those windings? Whereas audio AC transformers have non-magnetic separators between the section of laminations to avoid saturation? Does this mean that the transformer goes into magnetic saturation each cycle or something? If so there might be magnetic losses and generation of heat? Thanks for any advice. TIA.
13 years ago