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I intend to drop DC voltage from 270Vdc to 48Vdc,and this 48Vdc acts as input for a LM317 regulator,output is 24Vdc & it may supply 1A.
Pls help to calculate what value of the resistor in term of ohm &watt used?
Or any other idea in this case?
Thanks!!!
His favorite argument was "why would you want to play with microamps and microvolts when you can play with kiloamps and kilovolts?".
The one thing that sticks in my mind from the DC machines lab was a demo by a lecturer. He had an inductor that was about a foot diameter and 2 foot long connected to a power source via a knife switch that was also about a foot long. Open it slow and you got a small discharge across the opening. Open it as fast as you could and the two foot semi circular arc was just amazing.