So wall warts are obsolete? What breakthroughs replaced them? | Hacker News

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		mrfusion on Aug 30, 2020 \| parent \| context \| favorite \| on: A 189 Year Old Limitation on Inductor Size Has Bee... So wall warts are obsolete? What breakthroughs replaced them?

coryrc on Aug 30, 2020 [–]

The cost of switching power supplies. (your USB charger the size of a plug puts out more power than a transformer wall wart 6x8x8 cm)

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