Hi all,

I'm looking for a way to get galvanic isolation of a USB device (whatever
it is). Do you know somewhere a company or a product or a way to get this
isolation, I think that optocoplers won't fit the bandwidth.

I need such product for USB high speed or at least USB full speed.

Thanks in advance for your help.

"Mouarf" <toto@toto.fr> wrote in message newsp.tefbnuttlccc90@fabrice...
You can get a hub with isolation:
http://www.bb-elec.com/product.asp?SKU=UISOHUB4

Leo Havmøller.

thanks a lot, if nearly fits the bill but it does not work for USB 2.0 but
only USB1.1, does anyone know something that work for USB2.0?

Thanks in advance

Le Thu, 17 Aug 2006 12:45:40 +0200, Leo Havmøller <leh@-nospam-rtx.dk> a
écrit:

On Thu, 17 Aug 2006 14:14:19 +0200, Mouarf <toto@toto.fr> wrote in
comp.arch.embedded:

Please don't top post. Thank you.

Do you realize that anything that is USB 1.1 conforming and works at
full speed? A USB 1.1 hub will work with USB 2.0 host and device at
full speed, just not high speed.

--
Jack Klein
Home: http://JK-Technology.Com
FAQs for
comp.lang.c http://c-faq.com/
comp.lang.c++ http://www.parashift.com/c++-faq-lite/
alt.comp.lang.learn.c-c++
http://www.contrib.andrew.cmu.edu/~a...FAQ-acllc.html

yes I do realize but my app needs high speed transfer to work correctly so
a USB1.1 isolation is not enough for the application to work properly...

Mouarf wrote:
It is a common misconception to think that saying USB 2.0 is the same
as saying USB High Speed. It may be true that USB 1.0 and 1.1 did not
have High Speed and that USB 2.0 does have high speed, but USB 2.0 also
has Low Speed and Full Speed. So saying USB 2.0 says nothing about the
speed.

If you need High Speed, you should say USB High Speed. It is the USB
2.0 that is then implied, not the other way around.

Take a look at my first post, I told about High Speed...

Mouarf wrote:

-- "I need such product for USB high speed or at least USB full speed. "
^^^^^^^^^^^^^^^^^^^^^^^^^^^

It seems that USB 1.1 satisfies the "at least" part.


Michael N. Moran (h) 770 516 7918
5009 Old Field Ct. (c) 678 521 5460
Kennesaw, GA, USA 30144 http://mnmoran.org

"So often times it happens, that we live our lives in chains
and we never even know we have the key."
The Eagles, "Already Gone"

The Beatles were wrong: 1 & 1 & 1 is 1

"Michael N. Moran" <mike@mnmoran.org> wrote in message
news:TogGg.40255$Uq1.26343@bignews6.bellsouth.net. ..

Pathetc.. you guys spent more time with etiquette and nitpciking than
helping.

Elan Magavi wrote:
Who says we are here to help? Our purpose is to carp and fuss
about foolish misuse of usenet, such as failure to snip (horrible
example above) and lack of precision. The sacrifice of at least
one rooster on the block is necessary before any help can be
offered. Better results are had with sheep, and even better a
bull. Without us all is chaos.

--
Chuck F (cbfalconer@yahoo.com) (cbfalconer@maineline.net)
Available for consulting/temporary embedded and systems.
<http://cbfalconer.home.att.net> USE maineline address!

CBFalconer wrote:
Appologies for the "lack of precision" with my cut paste
in the .sig ... that was ugly.

--
Michael N. Moran (h) 770 516 7918
5009 Old Field Ct. (c) 678 521 5460
Kennesaw, GA, USA 30144 http://mnmoran.org

"So often times it happens, that we live our lives in chains
and we never even know we have the key."
The Eagles, "Already Gone"

The Beatles were wrong: 1 & 1 & 1 is 1

"CBFalconer" <cbfalconer@yahoo.com> wrote in message
news:44E9D6FD.F7DAF576@yahoo.com...
As long as that is clear.

however, you will easily find worse offenders elsewhere.

I need USB high speed , but i'd really like to NOT
say USB high speed , because it is unintuitive !!.

HIGH SPEED COMPARED TO WHAT ?!!!

Just more sales BS . Why do we let these
Luddites create our language !!!
This the proper way to say .............

USBh/480 = USB Host at 480bits/sec

__________________________________________________ ___




rickman wrote:

werty wrote:
Gosh, you could use an acoustic coupler!

R U cross posting again! Everytime you do , you forget to
read the text in the post !

Acoustic coupler has nothing to do with USBh/480 ...
Please pay attention next time you post ....



I saw Samsungs EVAL Board ( ARM cpu , as in all PDAs ) and
they wanted $1000 , now

www.littlechips.com has about same thing for

$300 !!
They show a 2.5" HDD attached in a 2nd photo ....

The ARM cpu will destroy the PC and Gates and Linus ....



__________________________________________________ ______________









cs_posting@hotmail.com wrote:

R U cross posting again! Everytime you do , you forget to
read the text in the post !

Acoustic coupler has nothing to do with USBh/480 ...
Please pay attention next time you post ....



I saw Samsungs EVAL Board ( ARM cpu , as in all PDAs ) and
they wanted $1000 , now

www.littlechips.com has about same thing for

$300 !!
They show a 2.5" HDD attached in a 2nd photo ....

The ARM cpu will destroy the PC and Gates and Linus ....



Bill gates did not give credit , so why should we ?
He did not create anything , he bought rights ( this is unethical
,sets
up motive to steal property of others ) and applied for 12,761 patents
.....

Bill dont do software , niether does linus . ......
__________________________________________________ ______________









cs_posting@hotmail.com wrote:

werty wrote:
You are continuing to top-post and use ridiculous shorthand, after
being advised not to. I do not need to read this junk. PLONK

--
Some informative links:
news:news.announce.newusers
http://www.geocities.com/nnqweb/
http://www.catb.org/~esr/faqs/smart-questions.html
http://www.caliburn.nl/topposting.html
http://www.netmeister.org/news/learn2quote.html

werty wrote:
Doo U have a sense of HUMOR? He was making a joke because the other
poster left off the M in front of the Bits/sec.