On 01/12/2013 01:22, David Forbes wrote:
On 11/30/13 11:13 AM, Grahame Marsh wrote:
I'm looking to pass a, i2c bidirectional data signal between two systems
that have about 2kV voltage difference between their respective ...
Grahame,
A quick Google search turned up this HP (Agavo) app note. It may or
may not help. There are amusing graphs of volts vs hours of lifetime.
2KV is usually at 10 hours.
http://www.avagotech.com/docs/5989-0802EN
David
Thank you for the paper it has helped a lot - if I have read it
correctly, the best performance is a catagory 3 opto coupler can stand
off 1kVDC for > 100 000 hrs. So it looks like my search for a part ends
'cause there is no such part... back to the drawing board.
Cheers Grahame
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