Re: Power
DC step down difficult?
For power transmission, yes.
Potential divider..two resistors..might have to be physically large to handle the high voltage. Not difficult.
OK, try delivering 250V/100A (that's the fuse in my house). Deliver it from a 400kV source (National Grid high-voltage circuits). Now look at how much power you will dissipate in your potential divider to deliver the 25kW I'm asking for...
Vic.
Biting the hand that feeds IT
