6 ms·
can you explain a bit more?
by nraynaud 10y ago
can you explain a bit more?
- JoeAltmaier 10y agoHeat in wire is ~ current squared times resistance. If you use low-voltage DC, and you're supplying any significant power, then the current is high and the losses to wire heating are high. Inefficient and dangerous (fires). AC at high voltage can be low current, you can use much smaller wires for a given power.
- hx87 10y agoDC doesn't have to be low voltage though. Before high power solid state electronics became reliable, it was difficult to do DC-DC voltage conversion without going through AC first, but that isn't true today. Plenty of power is delivered across different grids using HVDC.