3180/92 - Sub-assembly, for incorporation into a microwave oven, consisting of a printed circuit board which incorporates power supply and logic functions in a single unit. The power supply includes a transformer and voltage-rectifier and - regulation circuit. The board also drives temperature-sensing circuitry and an audio timing-device. The unit has a clock, and is encased in a metal chassis providing thermal and electrical protection as an integral part of the oven itself. - The Trade Hub