Thanks Dan,
I can find optos like this but you need 3 or 4 of them and a driver chip
to set up the two bidirectional lines for an i2c link. Mouse sell
single chip that aren't necessarily opto, some are capacitive for
example, specifically design for i2c links like this one
http://www.mouser.com/ds/2/405/sllseb6b-261049.pdf
where I get lost is understanding what working voltage it will isolate,
I need 2kV, as against some test code voltage.
Cheers Grahame
On 30/11/2013 19:07, Dan Harboe Burer wrote:
What about this type of opto?
Dan
-----Oprindelig meddelelse----- From: Grahame Marsh
Sent: Saturday, November 30, 2013 7:13 PM
To: [email protected]
Subject: [neonixie-l] Slightly OT - 2kV voltage isolation?
I'm looking to pass a, i2c bidirectional data signal between two systems
that have about 2kV voltage difference between their respective
"grounds". I can find several device on, say, Mouser's website but I'm
getting lost with all the insulation terms. There is a variety of test
voltage conditions like "Vrms for 1 minute" and "galvantic isolation in
kV". These voltages are typically 4 - 6kV. But I also find "Maximum
working insulation VIORM 566 voltage" - so does this mean a normal
working voltage difference? And so well less than 2kV.
Sorry, but I need an idiot's (that's me) guide to what isolation voltage
I should be looking for to isolate these systems that live 2kV apart? I
know there are solutions that use multiple optoisolators and drivers but
I was looking for a single chip solution. Any helpers please?
(The application is between a microcontroller and the cathode circuit of
a CRT so it is almost on topic.)
Grahame
--
You received this message because you are subscribed to the Google Groups
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send an email to [email protected].
To view this discussion on the web, visit
https://groups.google.com/d/msgid/neonixie-l/529A3E64.3070304%40googlemail.com.
For more options, visit https://groups.google.com/groups/opt_out.
