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Science Forum Index » Astronomy Forum » Tesla: Still Unequaled!
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| Double-A |
 Posted: Thu May 01, 2008 10:44 am |
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On May 1, 6:17 am, herbertglaz...@webtv.net (G=EMC^2 Glazier) wrote:
Quote: oc Future homes having photo-electric cells on roof a wind mill and
large cadmium battery might prove Edison was right after all. Bert
My mothers cousin had a windmill that charged batteries on his farm
already in the 30's. So what else is new?
Double-A |
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| oldcoot |
| Posted: Thu May 01, 2008 1:03 pm |
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On May 1, 1:42 pm, Double-A <double...@hush.com> wrote:
Quote:
Resistance is the main problem to long range DC transmission. I
suppose a high enough voltage might overcome that.
Yep. Ultrahigh voltage offsets resistance of the line, so the voltage
drop in the line becomes negligible (per Ohm's law).
Quote:
But you would have
to convert it back to AC to be able to step it down to a useful
voltage.
Correct. Thyristor banks up-convert to UHDC and then down-convert back
to AC at the receiving end.
Quote: The Edison (DC) system as it existed wouldn't go far.
Voltage far too low, line resistance too high. oc |
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