I don't think so. Considering that the neutral line is common to input and output, there is no attenuation of anything on the neutral line. You may wish to review the web page I wrote about how to hook up EMI filters: http://www.laushaus.com/tesla/emifilter.htm Regards, Gary Lau MA, USA <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Sun, Feb 4, 2018 at 10:43 PM, Daniel Kunkel <dankunkel@xxxxxxxxx> wrote: > Hello everyone, > I was on this list about 20 years ago (wow does time fly)! I'm doing a big > rebuild and getting my coil back together now. My question is about using a > variac as a line filter? Will that iron core attenuate RFI better than a > commercial line filter? > ~Dan > Kansas City area > _______________________________________________ > Tesla mailing list > Tesla@xxxxxxxxxxxxxxxxxx > https://www.pupman.com/mailman/listinfo/tesla > _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla