I don't think it's stupid but because of the details of USB I think it would
be too hard, if you use a USB adaptor chip with an SPI or I2C interface you
could isolate at the SPI link using probably only 3 or 4 fast optos which
could be a lot easier.

Oliver.

----- Original Message -----
From: Raymond Ranwez <ray_forum@HOTMAIL.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, August 28, 2000 2:32 PM
Subject: [EE]: USB isolation


> Dear forum,
> I'd like to transmit physiological information from a human body (ECG) to
a
> PC.
> USB is a possible solution for the connection to the PC, but I need a 4KV
> isolation between the human body and the PC.
> Is it stupid to think to isolate the USB bus?
> Did someone implement an USB bus isolation?
> Thanks for your help, and best regards,
> Raymond Ranwez,
> Belgium
>
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