In message
<3c6137471f17424280d9b2ceaefd7f853b6...@usmafrexmb01.bose.com>, dated
Wed, 19 Dec 2007, "Tyra, John" writes:
>The good material is Nylon 66 and the bad material is PBT. The issue is
>the bad material cracks when a screw is inserted into the mounting
>screw boss..
These materials a
...@conformance.co.uk]
Sent: Wednesday, December 19, 2007 1:12 PM
To: Tyra, John
Cc: emc-p...@ieee.org
Subject: Re: Looking for quick method of telling plastic material apart
John,
It would help (a lot!) to know what the plastic
is, and what the differences are between the
material used in the good
John,
Any method to differentiate between the two materials should be
based upon measuring some characteristic where the difference between the
materials seems to be large. Any mechanical, electrical or thermal property
should work. You have received several suggestions.
As
appreciated.
Regards,
John
From: Nick Williams [mailto:nick.willi...@conformance.co.uk]
Sent: Wednesday, December 19, 2007 1:12 PM
To: Tyra, John
Cc: emc-p...@ieee.org
Subject: Re: Looking for quick method of telling plastic material apart
John,
It would help (a lot!) to know what the plastic
In message
<3c6137471f17424280d9b2ceaefd7f853b6...@usmafrexmb01.bose.com>, dated
Wed, 19 Dec 2007, "Tyra, John" writes:
>Any suggestions are appreciated.
You have to tell us what the materials are. Without that, no suggestion
is valid.
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and
y work for you as this
depends on plastic types.
luck,
Brian
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Tyra, John
Sent: Wednesday, December 19, 2007 9:18 AM
To: emc-p...@ieee.org
Subject: Looking for quick method of telling plastic material apart
Hello everyone,
One of o
John,
It would help (a lot!) to know what the plastic
is, and what the differences are between the
material used in the good parts and that used in
the faulty parts.
Nick.
At 12:18 -0500 19/12/07, Tyra, John wrote:
>Hello everyone,
>
>One of our vendors changed the plastic mate
Hello everyone,
One of our vendors changed the plastic material on one of the safety
controlled parts they make for us and unfortunately they cannot tell us what
lots this may have affected. The parts made from the two plastics look
identical to the naked eye….
Any suggestions on a quick and
the resistances that can dissipate power
for an extended time -- long enough to heat the plastic material to
ignition temperature. The resistance can't be too low or too high.
For each power source, there is a range of resistance that can
dissipate sufficient power. Usually, this is in the
emc-p...@ieee.org
> Subject: Plastic Material
>
> Hi,
>
> Did anyone hear that UL intends to enforce the following with effect
> on Jan 98 with a transition of half to one year that :
> " The minimal plastic requirement for SELV is going to be 94V-1
> in
To: emc-pstc%ieee@interlock.lexmark.com
cc:(bcc: George Alspaugh)
bcc: George Alspaugh
Subject: Plastic Material
Hi,
Did anyone hear that UL intends to enforce the following with effect
on Jan 98 with a transition of half to one year that :
" The minimal plastic requirement for SELV is going to
Hi,
Did anyone hear that UL intends to enforce the following with effect
on Jan 98 with a transition of half to one year that :
" The minimal plastic requirement for SELV is going to be 94V-1
instead of HB as previously indicated"
Does anyone know if this enforcement is referring to :
a) Pr
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