Can anyone tell me where can I obtain the latest approval agency symbols
for reference.
Thanks and regards,
Raymond Li
Dixons Asia Ltd
Hello Raymond,
On the Safety Link (http://www.safetylink.com), in the sub-section titled,
Safety Articles, FAQs, etc. you will find a link called Safety Marks.
This link has around 15 marks posted.
I know of no comprehensive collection of marks but do know that if you
visit each agency's
Guy,
EMC testing of a power supply may give you a warm and fuzzy feeling, but
unfortunately it is no guarantee of EMC compliance when configured with
your portable computer. I recommend the computer/power supply
combination be evaluated to the following EMC standards for usage in
environments
I agree with Doug, but the dow for the 61000-3-2/3 is June 98 if the equipment
did not fall within the scope of the old (EN60555) standard. That seems to be
the case for your product.
Matthias r. heinze
tuv rheinland
--
From: Frazee, Doug[SMTP:doug_fra...@atk.com]
Sent: Monday, May
Heber and any with interest
Thanks for your feedback on the PTC /MOV application. Help me understand.
My sense of the problem is one of power dissipation curves that must
overlay properly. The MOV has a joule rating that if exceeded will cause
failure while the PTC needs to dissipate enough
Rich,
I can only respond for South Africa at this time. The company I work for
manufacturers computer disk drives (removable media-type). I recently
had the same question concerning potential requirements in South Africa.
What I found from the South African Bureau of Standards (SABS) was
that
Chris wells wrote: ...isn't there some value in preventing the nasty
flash over of a MOV
failure?
A positive Temperature Coefficient Thermistor (PTCT) will prevent
catastrophic failure of a circuit when a MOV or other component shorts.
However, it is often unable to protect the MOV from
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