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by ianburrell
932 days ago
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The DC power for LED varies based on the bulb and most are less than 48V. Which means you end up with DC-DC converter in each one. DC-DC is slightly more efficient than DC-AC but not enough to make worth converting. The same is true of electronics, you are replacing AC-DC charger with DC-DC charger. The other big problem is that lots of appliances require more power than feasible with 48V. People are fine with the low-power DC right up until they need to plug in a space heater. Are you going to have two kinds of outlets everywhere? Or incrementally upgrade each circuit? Or are going to upgrade the wiring with super thick cable that can handle the current? |
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People already do, with usb sockets sitting next to mains sockets.
Of course if you standardise on usb-c you are still doing dc to dc (and all sorts of extra things) so not much point as you pointed out.