I read in !emc-pstc that Crabb, John
wrote (in <1D4B655D707B2549AFCD8C686631657508AC2BC2@SGBDUN200>) about
'LCD Displays and Safety' on Tue, 9 Sep 2003:
>I spoke to some committee members who seemed to think it was
>included because LCDs couldn't withstand the imp
From: Speakman, Jim [mailto:jim.speak...@uk.thalesgroup.com]
Sent: 09 September 2003 08:19
To: 'emc-pstc'
Subject: LCD Displays and Safety
IT equipment Standards (BS EN 60950) define mechanical safety requirements
for display screens of the Cathode Ray Tube type in order to provide
protection from i
IT equipment Standards (BS EN 60950) define mechanical safety requirements
for display screens of the Cathode Ray Tube type in order to provide
protection from implosion.
LCD displays do not manifest this hazard, but does anyone know of any
International or National Standards requirements
From: duncan.ho...@snellwilcox.com
Date sent: Fri, 24 Sep 1999 17:22:50 GMT
To:
Subject:LCD Displays
Send reply to: duncan.ho...@snellwilcox.com
>
> I have a product that has an LCD display with an Inverte
Hi John:
> Rich, you said below "Assuming you are using IEC 60950, a fire
> enclosure is required for any circuit exceeding the limits of ELV,
> independent of available current or power."
>
> Why did you mention "exceeding the limits of ELV" ?Surely specific
> compon
Gary
-Original Message-
From: Ing. Gert Gremmen [mailto:cet...@cetest.nl]
Sent: Sunday, September 26, 1999 12:53 AM
To: duncan.ho...@snellwilcox.com; emc-p...@majordomo.ieee.org
Subject: RE: LCD Displays
Importance: High
Hello Duncan and group,
If your equipment is in the scope of EN
tland.ncr.com
Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. VoicePlus
6-341-2289.
> -Original Message-
> From: Rich Nute [SMTP:ri...@sdd.hp.com]
> Sent: 24 September 1999 19:27
> To: duncan.ho...@snellwilcox.com
> Cc: emc-p...@majordomo.ieee.org
> Sub
ordomo.ieee.org
Subject: LCD Displays
I have a product that has an LCD display with an Inverter that operates at
100Khz 2KV and I believe is capable of supplying 6.5mA The question is does
it
require a fire enclosure?
If it does what are the requirements for the flamability of the screen
Hi Duncan:
> I have a product that has an LCD display with an Inverter that operates at
> 100Khz 2KV and I believe is capable of supplying 6.5mA The question is does
> it
> require a fire enclosure?
Assuming you are using IEC 60950, a fire enclosure is
required for any circuit exceedi
I have a product that has an LCD display with an Inverter that operates at
100Khz 2KV and I believe is capable of supplying 6.5mA The question is does it
require a fire enclosure?
If it does what are the requirements for the flamability of the screen and any
plastic protective covers fitted to it
___
From: DouglasScott on Mon, Jun 9, 1997 8:09 AM
Subject: RE: ESD - Membrane switches and LCD Displays
To: jeich...@statpower.com
Jim,
I had the same problem (design issue). The key here is to have the longest
Jim
I have quite a few products with the same basic user interface you describe
and have tested extensively to ESD.
To answer some of your questions:
If the metal plate on which the pushbutton overlay is applied is earth
grounded it should attract the ESD discharge. I assume that your device
Hi Jim.
You wrote:
---snip---
In my experience, if you use a 'normal' proprietary membrane switch/panel,
with the half inch dead zone at the edges that you describe, you wont have
an ESD problem, at least not by breakdown of the membrane at 8kV.
However, ESD discharges at the periphery of yo
is the top layer
of your membrane switch/window? I believe that if you have sufficient
thickness in this part, you won't have an ESD problem. Then again, I
haven't a lot of experience with either membrane switches or LCD
displays, so all I am going on here is a hunch...
Steve Chin
St
I am looking for some guidance on the following construction:
We have a remote control panel that contains an LCD display (approx. 2" x
1") mounted on a circuit board behind a metal panel. An opening in the
metal panel allows the user to see the screen, and is only marginally larger
than the
Greetings,
I am looking for information on EMI characteristics of color LCD panels vs.
their B/W counterparts.
Since I have minimal experience in working with color LCD's, I would like to
know if there is anyone
out there who might be able to shed some light on this subject. Any help
will be grea
Greetings,
I am looking for information on EMI characteristics of color LCD panels vs.
their B/W counterparts.
Since I have minimal experience in working with color LCD's, I would like to
know if there is anyone
out there who might be able to shed some light on this subject. Any help
will be grea
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