Has anyone ever used this technology on a pcb that was required to pass
agency creepage and clearance requirements? Which agency was involved, and
how did they handle it?
Jim Eichner, P.Eng.
Manager, Engineering Services
Xantrex Technology Inc.
Mobile Power
phone: (604) 422-2546
fax:
Group,
Calling that stuff a Faraday Cage is way to optimistic.
At such a close distance the E-field would be attenuated
substantially, but it would do nothing for the H-field (magnetic)as it's
way to close to the RF-currents.
It would have done nothing for earth potentials creating
cable Common
Hello again,
Does anyone in this forum have any knowledge about United States FDA 21 CFR
part 11 certification.
What is the process?
Are there independent labs that test or witness test software?
I have been asked these questions and have no experience in this direction.
This may not be the
Ken has provided a very complete and thorough explanation of the reasoning
behind the 100mOhm bond value. In low voltage systems, where current
carrying conductors are necessarily of high ampacity, you might want to
consider even lower values than 100 mOhms as the voltage drop under very
high
Chris,
They way it was described to me...
The conformal coating would encase the board, creating a sort of shield.
Understandably, care is taken to prevent shorting of circuits.
Whoever designed the technology has certainly dealt with those concerns.
Mat
-Original Message-
From:
Thank you for the clarification Charles.
Mat, that's a technology that seems to have just passed me by!
I look forward to the comments on this.
Regards
- Chris
-Original Message-
From: Charles Grasso [SMTP:chasgra...@hotmail.com]
Sent: Wednesday, July 03, 2002 5:24 PM
To:
Actually Chris there was a product that provided for
a solder mask then had a conductive film ontop of that.
The manufacturers could also tie this outer skin to the
grounds on the printed circuit boord finally making the
Faraday cage !!
Papers I have read on this showed an excellent reduction
Well, I couldn't dodge any longer and got laid off a couple of weeks ago. If
anyone hears of any positions in compliance, including test facilities and
ISO/Quality, please let me know and I'll forward my resume. I'd prefer the Bay
Area at this time, but that may change depending on
While it is true that the MIL-B-5087 class H bond value of 100 mOhm is
somewhat arbitrary, inability to meet this requirement should be viewed with
the greatest concern. Consider the technical reasons for imposing a class H
(shock hazard) bond requirement. The ultimate rationale is to avoid a
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