-on
ferrite to attenuate cm spikes.
--
From: John Barnes jrbar...@iglou.com
To: George Stults george.stu...@watchguard.com, emc-p...@majordomo.ieee.org
Subject: Re: Voltage Spikes on Power Lines etc
Date: Thu, Mar 14, 2002, 5:16 PM
A very basic precaution is to put ceramic capacitors
One clear piece of evidence is that safety standards committees always
specify much larger creepage and clearance distances for externaly supplied
hazardous voltages than for those generated within a product. A good
example are the two sets of tables in IEC or EN 60 950. This is to
accomodate
George,
I discuss problems with powerline-spikes in chapter 8, Designing Power
Supplies, of my bookElectronic System Design: Interference and Noise
Control Techniques (Prentice-Hall, 1987, now out of print). For
equipment that will be used indoors, you should try to design your
equipment to
.
--
From: Roman, Dan dan.ro...@intel.com
To: 'George Stults' george.stu...@watchguard.com,
emc-p...@majordomo.ieee.org
Subject: RE: Voltage Spikes on Power Lines etc
Date: Thu, Mar 14, 2002, 2:04 PM
George,
The ACTA for Part 68 has issued an advisory for Customer Information
Hi George:
Take a look at IEEE standard C62.41 ('Recommended Practice on Surge Voltages in
Low-Voltage AC Power Circuits'). It has summaries of transient voltage surveys
done by other people around the world.
Other portions of the standard suggest specific types of surge tests test
levels.
George,
The ACTA for Part 68 has issued an advisory for Customer Information
documentation for Part 68 devices. It suggests a warning be included
suggesting the use of an AC surge arrestor. This is on page 7 of 8 of a PDF
file downloadable from http://www.part68.org/.
It claims that telephone
Hi George,
One suggestion I have is to put a line viewer or recording device on an
unprotected power circuit to record power disturbance events over a period
of time. You should be able to rent these recorders if you need hard
evidence.
There are also some interesting stories at the Oneac site
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