Delightfully on topic for me! This makes the second part that I'm using perhaps well outside its design limits. (The first was Michel's pointing out that my bias on the DAC's analogue ground is outside parameters.)
I hadn't thought too much about the 6N137 isolation wear problem, beyond just choosing a manufacturer whose specs seemed to have the highest isolation rating in terms of voltage. I did notice in passing that they also specified 1 minute at that voltage - and just assumed this is the UL rating methodology (by which they certify and/or compare different units), and doesn't reflect actual operating conditions. I did read somewhere that the isolation survives far better under a unipolar and constant potential than a fluctuating, bipolar voltage (crossing zero). At least in this case, we don't have pulses or fluctuation of any kind involved! My models built so far haven't broken down - yet... But Grahame - fantastic that you found this part and I'll definitely be trying it out at the next opportunity! Aaron -- 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/454416e4-3d16-4dbb-a794-f0a617363e5f%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
