There is a manufacturer in the US who makes filters to eliminate low order harmonic current, particularly the 3rd. The product is made to mitigate real or imagined harmonic problems, not to meet some harmonic standard. The product is called "3rd Out" I think. It is available as a plug-in device for individual products and also available for installation at a distribution panel board. John P. Wagner AVAYA Communication 1300 W. 120th Ave, Room B3-D16 Phone/Fax: (303) 538-4241 johnwag...@avaya.com
> ---------- > From: John Woodgate[SMTP:j...@jmwa.demon.co.uk] > Reply To: John Woodgate > Sent: Thursday, March 15, 2001 1:19 PM > To: emc-p...@majordomo.ieee.org > Subject: Re: PFC filter > > > <ad.82daed6.27e25...@aol.com>, peterh...@aol.com inimitably wrote: > >I have been told by a customer that there are PFC filter available > commercially > >off the shelf just like the EMI filter that I can buy and put it in > front of my > >power supply and the PFC filter will cure most of the harmonic > problems. Is this > >ture? If so can anyone let me have some manufacturer name or web > address for > >these filters please? > > It is substantially not true, in that no such device will, for > example, > eliminate even the low-order harmonic currents of an SMPS. If you had > something that produced only, or mainly, one specific harmonic, then a > filter would be practicable. > -- > Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 > 747839 > Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer > from > tallyhosis. PLEASE do not mail copies of newsgroup posts to me. > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://www.rcic.com/ click on "Virtual Conference Hall," > >
