BabyPeanut wrote:The ECM Motor Story
ChumpusRex wrote:Electric motors, especially large commercial units, are huge power consumers. Electric motors account for about 65% of US electricity demand.
ChumpusRex wrote:I accept that this design brings increased complexity - but solid state electronics are very reliable - and have been used for a couple of decades for specialist industrial equipment and in domestic appliances. Indeed, the higher efficiency and lower heat generation could potentially improve reliability.
NeoPeasant wrote:Ok, it's a real efficient fan motor. Looks rather costly and complicated compared to a dumb fan motor.
WisJim wrote:I have seen them with electronics destroyed by lightning in the area that had absolutely no affect on computers, phone equip, etc., in the same building running off the same electrical service.
BabyPeanut wrote:WisJim wrote:I have seen them with electronics destroyed by lightning in the area that had absolutely no affect on computers, phone equip, etc., in the same building running off the same electrical service.
While nothing can block lightning a total house voltage filter is a good idea.
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