Tim Bray on Nostr: npub178rvt…sqekt Is this sort of AC->DC conversion the same as what happens inside ...

npub178rvtslm3qykq8uy5afswta2qz5pk9atjxsepht4x8ldddssp6kq4sqekt (npub178r…qekt) Is this sort of AC->DC conversion the same as what happens inside a high-wattage EV charger? I know that when I plug into one of the 350kW machines, it makes sounds like an airplane taking off and I’ve often wondered how they work inside.