Jim Yanik wrote:
Only drawback I can think of is that the switching PS is more failure-
prone;more parts,more complexity= less reliability,and more vulnerability
to surges on the mains.

Switching power supplies are notorious sources of birdies at every harmonic
of their (not very high) operating frequency, even when there's been some
effort to suppress them in design. I doubt a microwave oven has much suppression.
--
Ron Hardin


On the internet, nobody knows you're a jerk.