In message
,
dated Wed, 7 Feb 2007, "Price, Ed" writes
>I believe that device might manage to also invoke the medical and toy
>requirements. Now, if the device were equipped with some kind of
>feedback sensor (and I can't imagine what physical parameter might be
>of interest),
EEG waves!
>
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Wednesday, February 07, 2007 10:28 AM
To: emc-p...@ieee.org
Subject: Re: USB Power Converter
In message , dated Wed, 7
Feb 2007, Jon Griver writes
>If you think that's a novel use of the USB concept, check out:
>http://www.getusb.info/us
In message
<9b9d334219387043a6cbef09a7104f4301dce...@ma01exch01.cantata.com>, dated
Wed, 7 Feb 2007, "Stone, Richard" writes
>If it was indeed a peripheral then it would subjected to its own
>compliance requirements. In this case, the USB port cant be a
>peripheral as it is Included(mounted)wi
In message
<785975EAC320644FA6447FCC7B73F11094B1AB@MILEXMIPV1.sdcorp.global.sandisk.
com>, dated Wed, 7 Feb 2007, Sudhakar Wasnik
writes
>But never expected to function as a power source like power supply.
Well, surely if it's designed to supply power, and the USB specification
doesn't restri
Thanks John,
>Is the USB port seen as a Power source (5V/700mA) or communication
>port?
Both. A physical port doesn't necessarily have a unique function.
But never expected to function as a power source like power supply.
>
>Look form the PC makers side, when PC is goes for certification
Hello John,
If it was indeed a peripheral then it would subjected to its own compliance
requirements. In this case, the USB port cant be a peripheral as it is
Included(mounted)within the PC. The older USB ports/drive that were cabled
To a pc would be classified as a peripheral. I read this in a PC
In message , dated Wed, 7 Feb 2007,
John Woodgate writes
>What is needed is a standard that specifies clearly the requirements
>(functional safety and EMC)
OOPS! I meant (functional, safety and EMC). What a difference a comma
makes!
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www
In message
<785975EAC320644FA6447FCC7B73F11094B175@MILEXMIPV1.sdcorp.global.sandisk.
com>, dated Wed, 7 Feb 2007, Sudhakar Wasnik
writes
>Is the USB port seen as a Power source (5V/700mA) or communication
>port?
Both. A physical port doesn't necessarily have a unique function.
>
>Look form t
In message , dated
Wed, 7 Feb 2007, Jon Griver writes
>If you think that's a novel use of the USB concept, check out:
>http://www.getusb.info/usb-foot-warmers-and-glitter-lamps/
>
>You can also find USB powered coffee warmers out there.
>
>Are these IT accessories, or DC powered domestic appara
Very interesting ,
Is the USB port seen as a Power source (5V/700mA) or communication port?
Look form the PC makers side, when PC is goes for certification , will it
require to use all these novel accessories as a load and verify compliance
against each?
Thanks,
Sudhakar
_
From:
Ed,
If you think that's a novel use of the USB concept, check out:
http://www.getusb.info/usb-foot-warmers-and-glitter-lamps/
You can also find USB powered coffee warmers out there.
Are these IT accessories, or DC powered domestic apparatus ;-)
Jon Griver
http://www.601help.com
The Medical
Hello guys,
Most of the MP3 Players have this USB battery charging system using USB
cable. Plug the USB cable to USB port it will charge the battery and
also you can use USB for normal operation.
USB IF standards calls for EYE diagram compliance of such devices. Most
of the USB cruzer drives a
A quick review of the USB 2.0 standard does not show any EMC requirements
for USB power or devices. The USB standard only states that "All USB
devices should be designed to meet the applicable regulatory requirements".
CISPR 24 should be used to determine acceptable noise and transient levels.
I
In message
,
dated Wed, 7 Feb 2007, "Price, Ed" writes
>OTOH, is there anything in the USB definition that addresses RF noise
>and transients on the USB power bus? Is there a CE/CS USB criteria?
I don't know about the USB definition, but CISPR22/EN 55022 now sets
limits for emissions on 'd.c
I recently read about a company that will be introducing a series of
micro-sized power converters that will attach to a computer's USB port and
charge general purpose rechargeable batteries. The logic is that USB ports are
ubiquitous, people who have computers typically also have several applicatio
On Tue, 6 Feb 2007 11:25:38 -0500,
"Hopkins, Michael J." wrote:
> There is currently a corrigendum circulating to clarify this issue, but
> the way it's currently written, it probably won't survive.
...
> In either case, most also agree that the calibration should be done for
> each line ou
In message <200702071143.l17bhorq018...@smtp18.singnet.com.sg>, dated
Wed, 7 Feb 2007, kohscp writes
>Where did you get these date of 20 July 2007 & 20 July 2008 for
>2006/95/EC? This New LVD directive is officially release on 12 December
>2006, and enter into fore on 16 January 2007.
>
>Or are
Hi John,
Where did you get these date of 20 July 2007 & 20 July 2008 for 2006/95/EC?
This New LVD directive is officially release on 12 December 2006, and enter
into fore on 16 January 2007.
Or are you referring to New EMC directive?
Regards
Koh
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org
Derek,
The EMC directive will almost certainly apply, and you should consider whether
the R&TTE directive might be applicable, in which case it takes precedence
over the EMC directive and also applies all the requirements of the LVD
without limitation of voltage.
Best regards
Neil R. Barker CEn
Our microwave products are certified using both standard the only different is
a measure of emitted field from enclosure.
Paolo Gemma
Siemens Networks SpA
Carrier Research & Development Microwave
System Test EMC/safety
S.S. 11 Padana Superiore Km.158
20060 - Cassina de' Pecchi (MI)
* office: +3
I think this question has already been answered, but to clarify; although
73/23/EEC has been repealed, the new directive, 2006/95/EC makes specific
provision that any reference to 73/23/EEC will be construed as a reference to
2006/95/EC. Hence, there is no need to change existing DoCs, which will
g
Hi Derek,
PoE powered devices follow all the same requirements as would a product
powered from any other source (straight from AC inlet, DC input from an AC/DC
converter, etc.). The LVD and EMC Directives all still apply as would the
R&TTE Directive if it falls under that category.
Maybe I’
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