My comments re Woodgate was confsuing. What I meant to say was the transformerless SMPS s appear to generate considerable nosie as opposed to the passive transformer. Is anyone concerned about this noise?
Ralph Cameron ----- Original Message ----- From: "Ralph Cameron" <ral...@igs.net> To: "Dick Grobner" <dick.grob...@medgraph.com>; "IEEE EMC-PSTC E-Mail Forum (E-mail)" <emc-p...@majordomo.ieee.org> Sent: Tuesday, November 28, 2000 11:14 PM Subject: Re: IEC 61000-3-2 & -3-3 > > J.M.Woodgate's comments are very appropriate to identify where all the > conducted noise is coming from in consumer residences but does nothing to > mitigate the problem. The unfiltered SMPS used for replacement of the old > reliable non noise generating physical transformer contributes little or no > noise. > > As soon as some of these high efficiency" noise (e.g. Halogen /Xenon > lighting supplies) generators start truning the "Samrt House " concept into > a Haunted House, watch the brickbats fly. > > Ralph Cameron > EMC Consulting and Suppression of Consumer Electronics > (After sale) > > p.s. That goes for the trasnformerless supplies in treadmills too. > > ----- Original Message ----- > From: "Dick Grobner" <dick.grob...@medgraph.com> > To: "IEEE EMC-PSTC E-Mail Forum (E-mail)" <emc-p...@majordomo.ieee.org> > Sent: Tuesday, November 28, 2000 3:50 PM > Subject: IEC 61000-3-2 & -3-3 > > > > > > > > > > At the web address below you will find an article written by J.M. Woodgate > > dealing with 61000-3-2 & -3. This may be of interest to some on this forum > > as I know the issue seems to surface about every other week. > > Happy Reading! > > > > > > http://www.conformity-update.com/iec-61000-000908.htm > > > > Dick Grobner > > Compliance Engineering > > Medical Graphics Corporation > > 350 Oak Grove Parkway > > St Paul, MN 55127 > > 651-766-3395 > > 651-766-3389 (fax) > > dick.grob...@medgraph.com > > > > > > > > ------------------------------------------- > > This message is from the IEEE EMC Society Product Safety > > Technical Committee emc-pstc discussion list. > > > > 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: > > Jim Bacher: jim_bac...@mail.monarch.com > > Michael Garretson: pstc_ad...@garretson.org > > > > For policy questions, send mail to: > > Richard Nute: ri...@ieee.org > > > > > > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > 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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
