Brian,
I have forwarded your message to the sales director and production manager.
They, and others, oft accuse me of intransigent (but typically use many
additional descriptive terms). We all make mistakes, but they must be
recoverable and not fatal.
Component power supplies - you get what you p
If your company makes a device or component that is used within your customer's
device or system I highly recommend you design and test your product for the
best EMC performance you can within reason.
Our company purchases many components, modules, power supplies, controllers,
etc. from other c
In message <4fdd0939.9040...@earthlink.net>, dated Sat, 16 Jun 2012,
Cortland Richmond writes:
I am not at all certain saying "certification is void if used with
noncompiant power sources" is good enough legally -- and we know it's
not *factually* given CE + CE ?CE.
Why is it not good enoug
Bob
Yes I should have tried that approach.
Thanks for pointing it out.
I do have another opportunity in a few months.
Chris Wells
_
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Bob Richards
Sent: Saturday, June 16, 2012 3:45 PM
To: EMC-PSTC@LISTSERV.IEEE.OR
One cannot take responsibility for customer supplied equipment unless he
controls what the customer buys. I am not at all certain saying
"certification is void if used with noncompiant power sources" is good
enough legally -- and we know it's not *factually* given CE + CE ?CE.
Cortland Richmon
In message , dated Sat, 16
Jun 2012, Chris Wells writes:
I have a 24VDC powered device that needs to meet CISPR 11. We planned
to recommend a particular class B power supply with this device.
However the noise from our device appears to be pushing through the
power supply and limiting the co
I've had clients request testing the DC input just as we would for AC. It would
seem to me that if you test the DC input and it passes, then there should be
little question about compliance.
Bob R.
--- On Sat, 6/16/12, Chris Wells wrote:
From: Chris Wells
Subject: RE: CISPR 11 Question
To
I am facing a similar issue:
I have a 24VDC powered device that needs to meet CISPR 11.
We planned to recommend a particular class B power supply with this device.
However the noise from our device appears to be pushing through the power
supply and limiting the combo to class A. The problem area i
I don't think conducted emissions on the 24V input would be required but CISPR
11 is a system test and should include the 24V power distribution system which
I assume has an AC Mains input which would be tested for conducted emissions.
The Other Brian
From: emc-p...@ieee.org [mailto:emc-p...@i
In message
<043349c7d8e94e42a5a802d3c618cfd9afe...@dhrnasvxm05.danaher.org>, dated
Fri, 15 Jun 2012, "Birdsall, Gail" writes:
My question is whether conducted RF emissions on non mains ports is
required or not for equipment connected to a 24V power distribution
network by either EN61326-1 or
Dear Industry Experts,
Hach Company manufactures industrial test and measurement equipment and for the
purpose of EMC testing we test to the EN 61326-1 EMC standard. This test
standard specifies CISPR 11. The EN61326-1 standard simply states... The
equipment shall be classified and respectiv
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