At a former employer, we finally ended up putting resistive load banks in
computer chassis' (as shielding) for testing power supplies. But we found
that power supplies can fail at full load from their own emissions, and
later, installed in working equipment at lower loads, due to passing
through b
I read in !emc-pstc that Frazee, Douglas (Douglas)
wrote (in ) about
'EMC and power supply', on Fri, 17 Aug 2001:
>If the product in question is a PC, this is not
>the case. Both the FCC and EU allow PC's to be assembled from CE-marked
>components without addit
orking Systems
dfra...@lucent.com
-Original Message-
From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com]
Sent: Friday, August 17, 2001 3:37 AM
To: 'am...@westin.org'
Cc: emc-p...@majordomo.ieee.org
Subject: RE: EMC and power supply
Hi Amund,
I have experienced
When I managed both EMC and power supply design groups in the '80's,
I found the many tech magazine ads for open frame power supplies quite
amusing. These always stated that the power supplies met FCC and other
EMI requirements. How were these tested? A dummy d.c. load does NO
(tested). Always abide by this and you won't go wrong.
I hope this helps!
Regards
ALEX
-Original Message-
From: am...@westin.org [mailto:am...@westin.org]
Sent: Thursday, August 16, 2001 10:33 PM
To: emc-p...@majordomo.ieee.org
Subject: EMC and power supply
Hi all,
I read in !emc-pstc that Ken Javor wrote
(in <20010816231829.IKX2732.femail28.sdc1.sfba.home.com@[65.11.150.27]>)
about 'EMC and power supply', on Thu, 16 Aug 2001:
> So one question is how much do you load the power
>supply when you test it - you may want to load it ju
I read in !emc-pstc that am...@westin.org wrote (in <20010816213234.4109
..qm...@www1.nameplanet.com>) about 'EMC and power supply', on Thu, 16
Aug 2001:
>1. We plan to EMC test a stand alone power supply (PS1)
>2. We have an IT product which has passed the EMC test.
>
isolating the
mains from rail ripple and common mode (cm) CE. That can also be assessed
but it is more work.
--
>From: am...@westin.org
>To: emc-p...@majordomo.ieee.org
>Subject: EMC and power supply
>Date: Thu, Aug 16, 2001, 4:32 PM
>
>
> Hi all,
>
> 1. We pla
Hi all,
1. We plan to EMC test a stand alone power supply (PS1)
2. We have an IT product which has passed the EMC test.
3. We want to remove the current power supply in the IT product and replace it
with the power supply (PS1) after it has passed the EMC tests.
If power supply (PS1) pass the EM
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