In article , Dave Plowman (News)
writes
It certainly seems strange. Most SMPS are just outside the audio range but
well below RF. About 30 kHz being typical.

As with everything else in this world, they just keep getting faster.
The faster they run, the smaller the transformer, and speed is mainly
limited by the semiconductors which are getting quicker all the time.

--
Ben Mack
Watchfront Electronics - Bespoke R&D - http://www.watchfront.co.uk/
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