Mike,
This is nothing new. Defense (India), it is even wild.
IGT goes through same.
Sudhakar
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
Sosnoski, Michael
Sent: Thursday, June 22, 2006 1:10 PM
To: emc-p...@ieee.org
Subject: RE:1500 ohms 100 pF gun?
You guy's are lucky.
You guy's are lucky.
In gaming --our requirements are Impervious to air discharge of 50Kv and
contact at 27Kv.
Every time I read of real standards (with any RC network)--I just wish.
Mike
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Sudhakar
Wasnik
Sent: Thursday,
Thank you Sir,
I have toughest time of my career explaining this to my co-workers
(Mechanical engineers: I apologize for If unknowing I will hurt the
feeling of any mechanical engineer) who possess mysterious thinking
about ESD.
Sudhakar Wasnik
From: Conway, Patrick R (Houston)
Charles,
It is not a question of right or wrong.
It is about having logical rational explanation.
Sudhakar
From: Grasso, Charles [mailto:charles.gra...@echostar.com]
Sent: Thursday, June 22, 2006 12:55 PM
To: Conway, Patrick R (Houston); Sudhakar Wasnik; John Woodgate;
emc-p...@ieee.org
So - does that mean that only unconventional engineers are right?? :-)
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...@vext.com
Email: charles.gra...@echostar.com;
Email Alternate:
My bet's on capacitance Interesting thread --- kinda like déjà vu --
all these same conversations went on back in the mid 80's. Back then, there
were lot's of specifications for ESD --- everyone had their own idea of what
the capacitance and resistance values should be for a human discharge,
Ah, ha.
Glad to find another engineer who thinks like I do - unconventional!
anecdote-
One time I visited a large, well respected IT company who was having an
ESD
problem with a new product.
They could not release to production because they could not pass the
You are correct sir,
The current flow is from higher potential to lower potential.
So with repetitive zaps, the system accumulates the charge (potential)
higher than Gun potential, So current will flow from Object being zapped
to the Gun (Source).
That's why standard requires removing the
John,
Many thanks for helping getting a reply form the source. I mostly appreciate
it.
Neven
-- Original message --
From: John Woodgate j...@jmwa.demon.co.uk
In message
062220060603.17444.449A32C1000E06B844242207020853CECE020A900A02@comc
ast.net, dated Thu,
q
I wonder if Michael would explain how the discharge energy gets back from the
equipment being zapped to the source. It seems very mysterious.
q
Actually, not mysterious at all.
But does require some thinking outside of what is considered normal
current
flow.
A simple experiment
In message
ofcbd6f238.bf10c5dd-on85257195.006031f0-85257195.0060b...@hobartcorp.com
, dated Thu, 22 Jun 2006, Richard Pittenger
richard.pitten...@hobartcorp.com writes
Hello Group,
This may be a long shot, but I'm searching for
information/specifications, etc., concerning German power
Hello Group,
This may be a long shot, but I'm searching for
information/specifications, etc., concerning German power cordage for a
kitchen appliance. One spec. is VDE 02050 and the other is VDE 0293. I'm not
sure if these VDE numbers relate to product standards, cord construction or
In message 000801c69620$35d095e0$150bb...@colorado.linear.com, dated
Thu, 22 Jun 2006, David Cuthbert dcuthb...@linear.com writes
The return path for the charge (from the floating person) must be
through displacement current.
Oh, it IS magic, then. (;-)
--
OOO - Own Opinions Only. Try
Brent,
I ran measurements a couple of years ago with myself discharging into a
2-ohm ESD target. I got the same results as sited in the email. A metal
object in the hand really kicks up the initial current. The initial 300 ohm
source appeared to be the arm followed by the body as 1200 ohms. SPICE
I don't know about the Hish gun, but you can put that network together in a
NoiseKen ESS-2000. The cap and resistor values are independently user
changable.
Brent DeWitt
Everett, WA
From: Cortland Richmond 72146@compuserve.com
Sent: Jun 21, 2006 4:38 AM
To: ieee pstc list emc-p...@ieee.org
APC sells a number of power distribution products world wide. All of our
European products are for 230 V phase-to-neutral loads. I have not run
into any 400 V phase-to-phase loads. The 400 V loads commonly used are
three-phase 400 V support products such as air conditioners.
Although power
Hi All,
Michael tried to respond but not being a member of the list, his reply
bounced. I have forwarded it below.
Doug
From Michael King:
Greetings,
When we (David Reynolds, Andy Hish and myself) determined the
waveforms of ESD, we researched several typical applications: Human
finger-tip
Good people
In the US its typical for a large data center to run 208 Vac
rather than 120 Vac, and I just want to confirm I’m not going to run into a
similar change of voltage in European data centers. I assume that there is no
switch from 230 Vac, 50 Hz and phase to neutral.
In message
062220060603.17444.449A32C1000E06B844242207020853CECE020A900A02@comc
ast.net, dated Thu, 22 Jun 2006, neve...@comcast.net writes
AFAIK, there is no spec on imbalance of (each diff pair of) a port, and
I will check it with my local IEEE Ethernet spec specialists. I don't
know if
The CNCA-11C-048 is an implementation rule for WLAN. CNCA doesn't issue an
English version after the first 47 implementations. There is no official
English version for this implementation rule. An easy and cheap way is to
find a Chinese colleague or friend around you to explain what inside
Dear All
China re-invokes this mandatory certification for WLAN
product. The document is CNCA-11C-048 and can be
downloaded from CNCA website. Anybody have English
translation? Or anybody can show where to get it?
Thanks and Regards
Kyaw
Senior Regulatory Engineer
Olympus Technologies
AFAIK, there is no spec on imbalance of (each diff pair of) a port, and I will
check it with my local IEEE Ethernet spec specialists. I don't know if there
is a spec on the cable, but I will try to find it. I'd really like to see if
the requirement from the standard has any basis in the actual
In message
062220060528.732.449A2A99000B117902DC2200745672CECE020A900A02@comcas
t.net, dated Thu, 22 Jun 2006, neve...@comcast.net writes
However, the issue is not the imbalance specification looking into the
DUT connector (test port, diff pairs). The problem that I see here
is that
John, thanks for the explanation to David, you are right in what you wrote. I
was out the whole day so I am catching up now in the evening.
However, the issue is not the imbalance specification looking into the DUT
connector (test port, diff pairs). The problem that I see here is that
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