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
