John Woodgate wrote..
I think you misunderstood. I didn't mean that the USB port was a
peripheral; I used that term for whatever is powered via the USB port.
===
So, if it is a USB powered camera does that make it peripheral vision?
;-o
Regards
Tim
**
...@ieee.org
Subject: Re: USB Power Converter
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In message , dated Wed, 7
Feb 2007, Jon Griver writes
>If
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.
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
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate
Sent: Wednesday, February 07, 2007 10:36 AM
To: emc-p...@ieee.org
Subject: Re: USB Power Converter
In message
<785975EAC320644FA6447FCC7B73F11094B175@MILEXMIPV1.sdcorp.global.sandisk.
com>, dated Wed, 7 Feb 2007, Sudh
PC spec. sheet
A while back.
Regards
Richard,
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate
Sent: Wednesday, February 07, 2007 1:36 PM
To: emc-p...@ieee.org
Subject: Re: USB Power Converter
In message
<785975EAC320644FA6447FCC7B73F11094B175@MILEXMI
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
: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Jon Griver
Sent: Wednesday, February 07, 2007 9:22 AM
To: emc-p...@ieee.org
Subject: RE: USB Power Converter
Ed,
If you think that's a novel use of the USB concept, check out:
http://www.getusb.info/usb-foot-warmers-and-glitter-
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
are subjected to USB IF compliance and CE/FCC
certification for emission and immunity.
Sudhakar Wasnik
Sandisk Corp.
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
ted.eck...@apcc.com
Sent: Wednesday, February 07, 2007 7:32 AM
To: emc-p...@ieee.org
Subject: Re: USB Power
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
In message
<201048ea81ba0745aca78e4cc8839001c8b...@desmdswms201.des.grplnk.net>,
dated Thu, 8 Feb 2007, "Haynes, Tim (SELEX) (UK Capability Green)"
writes
>So, if it is a USB powered camera does that make it peripheral vision?
Undoubtedly. Especially if the subject is an angel or saint.
--
O
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