Internals of an induction heater used by the Motor Vehicle department. It's used with special coils for heating up nuts, bolts and other bits that have seized up, to assist in dismantling them... or rather it was used for that. Found a couple of expensive parts need replaced, and there may be others, including integrated circuits which the manufacturer has filed off their identifying codes. Of course, they say there are no spares available. So it's been decided to scrap and replace it, with a different brand. Will salvage and recycle some usable bits though.