5 ms·
I'm looking at an AC wall socket, with a 5 places multi plug with plugged in 2 phone chargers, my laptop's power brick, a fan. All of them are transforming AC i
by pmontra 3y ago
I'm looking at an AC wall socket, with a 5 places multi plug with plugged in 2 phone chargers, my laptop's power brick, a fan. All of them are transforming AC into DC (well, maybe not all of the fan.) I guess that the problem here is that all those DC appliances have different voltage inputs so a hypothetical DC wall socket maybe would be 12 V or multiples of that and then we'd still need transformers to a different voltage. On the other side all my AC appliances are standardized at 230 V.
- namibj 3y agoThe German wall socket (Schuko) is actually rated for 250V 10A DC. Or 250V 16A AC. A DC plug isn't hard, considering this already assumes the user will pull the arc by ripping the plug of an e.g. flaming appliance.
- pmontra 3y agoI think that the most common DC plug is a USB one. As you said, we pull the plug. I never saw an arc, not even in the dark, but they could be very tiny or the involved Vs and As are too small. USB A single space modules for the Euro standard wall plugs are in stock at every shop. USB C are less common. The point is that all of them are 5 V and about 1 or 2 A, some about 3A. Furthermore they are still AC to DC converters inside the wall instead that outside of it. There is not a single central converter in the house. See some examples of those modules at https://www.amazon.it/bticino-living-usb/s?k=bticino+living+usb https://www.amazon.it/bticino-living-usb/s?k=bticino+living+...