True, spelling is important, but I got about 5 times more hits Googling for
'alodine' than 'alodyne'.
I seem to remember our mechanical engineers also using the phrase 'chromate
conversion' for a conductive coating.
Google gave me a lot of hits on that term, including many pages comparing
I'm not an anodize or Alodyne expert but I will offer a few notes:
1. You will get more hits when looking up Alodyne if you spell it
correctly.
See http://en.wiktionary.org/wiki/alodyne
2. Both processes are clear. Some sort of dye is added for coloring.
Yellow is
popular for
All,
NOTE - The NORTHEAST PRODUCT SAFETY SOCIETY has a new web address –
WWW.NEPSS.NET. Please make sure you change your shortcuts and links or
you will miss out on all we have to offer!
There will be a Northeast Product Safety Society / CNEC Product Safety
Engineering Society meeting on
John,
Although that sounds fine on the surface and assuming that space is not
a consideration, you are still doubling the parasitic resistance and
inductance of the filtering path. In fact since the larger value
capacitance device often requires even larger packages, the parasitics
may be more
In message
5f5a140eb5cb094bb4d2c477c8c4ad99922...@sjc1amfpew04.am.sanm.corp,
dated Mon, 14 Jan 2008, Tarver, Peter peter.tar...@sanmina-sci.com
writes:
You seem certain about this. I'm unconvinced.
I suggest you talk to a tame electro-chemist.
Do you have a reference? I've been looking
In message
64c85c187de0f944bb7b79f01af019a034e...@mail-01.stratalight.com, dated
Mon, 14 Jan 2008, Marko Radojicic mradoji...@stratalight.com writes:
Two Y-caps in series = lower capacitance, twice the parasitics, less
filtering, and thus more conducted EMI.
There is no free lunch: Bomb-proof
Yeah, I know. Several weeks ago, the design engineers suggested that I do
something physically impossible, when I requested two caps in series...
And you would not believe some of the things that we have done to get the
'last few microamps out of some of our last custom medical unit. Nothing
to
Important EMI consideration:
Two Y-caps in series = lower capacitance, twice the parasitics, less
filtering, and thus more conducted EMI.
There is no free lunch: Bomb-proof Y cap design = reduced EMI
performance, unfortunately.
I agree with the statements that Y caps are exceedingly reliable
In message 002901c856f2$e128c900$c600a8c0@PC323541548743, dated Mon,
14 Jan 2008, rn...@san.rr.com writes:
For typical failure modes, contact your Y-cap manufacturer. Failure
modes are likely unique to each manufacturer.
But the fundamental point is that if the insulation is punctured, e.g.
From: John Woodgate
Sent: Thursday, January 10, 2008 2:02 PM
Ted Eckert writes:
IEC 60950-1 Annex J.
So it does, but the relation between these potentials and
corrosion is only determined under laboratory conditions.
You seem certain about this. I'm unconvinced. Do you have a
From: Curt McNamara
Sent: Thursday, January 10, 2008 2:33 PM
In my experience almost all anodize is non-
conductive. The only conductive one that I recall is black zinc.
I don't know if the process to which you refer is the form of anodizing I've
come across called 'Alodine' (also black),
Hi Brian:
While our design technically conforms to the requirements of
60950-1, I do
not feel 'right' about a single component bridging either
primary/secondary, or primary/floating metal in a Class II
unit until I
can learn more about Y1 cap reliability and typical failure
modes, so I
In message 002d01c856ee$fcd3c000$d600a...@tamuracorp.com, dated Mon,
14 Jan 2008, Brian O'Connell oconne...@tamuracorp.com writes:
A question on this std - why do Y1 caps not have to meet the active
flammability test, but Y2-rated caps must ?
I don't know. Do we have any IEC TC40 people here?
On 1/14/2008, Brian O'Connell wrote:
While our design technically conforms to the requirements of 60950-1, I do
not feel 'right' about a single component bridging either
primary/secondary, or primary/floating metal in a Class II unit until I
can learn more about Y1 cap reliability and typical
=*=*packet mod warning=*=*
-Original Message-
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of John
Woodgate
Sent: Monday, January 14, 2008 12:27 PM
To: emc-p...@ieee.org
Subject: Re: Y1 cap info
In message 002701c856e5$23d4fe80$d600a...@tamuracorp.com,
In message 002701c856e5$23d4fe80$d600a...@tamuracorp.com, dated Mon,
14 Jan 2008, Brian O'Connell oconne...@tamuracorp.com writes:
I have not been able to find fundamental construction information for
Y1-rated capacitors.
Obviously, details may be commercially-confidential. But in principle,
Good People,
I have not been able to find fundamental construction information for
Y1-rated capacitors. I am also looking for failure mode and reliability
info.
What I can find, makes me feel neither warm nor fuzzy for use in Class II
construction.
thanks much,
Brian
-
This message is from
Does anyone know if China and India follow the ICNIRP recommendation for human
exposure, or do they have their own national regulation for human exposure? I
am interested especially in the frequency range below 100 kHz.
Don Umbdenstock
Manager Compliance Engineering
Tyco Safety Products /
Hi Richard/all,
Table 2 shows horizontal Edmax for receive heights of 1 to 4 meters, not
just at 4 meters. Up to about 100-200 MHz the receive height for horizontal
Edmax should be at 4m or higher, so the value at 4m would be valid. For
higher frequencies the height for horizontal Edmax will be
Thank you.
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications Corp.
Tel: 303-706-5467
Fax: 303-799-6222
Cell: 303-204-2974
Pager/Short Message: 3032042...@vtext.com
Email: charles.gra...@echostar.com
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Monday, January
In message
f38c1e8a75404347a126608a8f48af5508fcc...@mer2-excha2.echostar.com,
dated Sun, 13 Jan 2008, Grasso, Charles charles.gra...@echostar.com
writes:
Thank you John and Monrad. I wonder though how this clinical definition
applies in the PC marketplace?
Who is the manufacturer when an
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