David Nelson wrote:
I have a cheap electronic (digital) power meter (about A$40). I put it in line with my 750W tesla coil (15/50 NST). Current varied from 3A to 8A - NST is rated 3.6A. Power varied from 700W to 2200W and power factor varied wildly from 30% to 80%. Does this seem right. Is it because of the nature of the meter? Interference from the coil? (about 4 meters away - 12 feet) Any comments?If it's a Kill AWatt answer is yes, wrong type of instrument and hope you didn't damage it. I don't know if it would give good readings if provided with a suitable EMI filter but kind of doubt it. You really need a standard electrodynamometer power meter for this sort of measurement. The Kill A Watt is a good gadget for its intended service and the calibration, even for lousy power factors, tracks that of the ED meter within a percent or so. Bargain price: <http://www.supermediastore.com/kilwateldet1.html?WT.mc_id=adwordsACCKillawatt&WT.srch=1&utm_source=cpc&utm_medium=campaign&utm_term=Killawatt&utm_campaign=cp_ACC_adwords&gclid=COaKg8PfzJMCFSY1agoduXuIiw>I can't help thinking that a PFC will actually help me out. I know this is a can of worms but even with all the discussion I am still uncertain about the need for a PFC cap. There are conflicting opinions I think. Any (definative) advice for NST use would be greatly apreciated. Thanks Dave Nelson _________________
Wonder if the line wrap will kill it. Ed _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla