[bikerhifinut]

Originally Posted by wd40addict

You need to use LTSpice RMS function on your current simulation. Capacitor ripple currents are normally quoted RMS. Your results are spiky, but probably well below 2.15A!

https://www.analog.com/en/technical-...f-a-trace.html

ah!
I was taking the maximum current as the limiting factor, the RMS simulates at about 750mA which is well inside the 2.15A rating of the capacitors I was considering.
If that's the case then I'm ok with the bigger values.
So.............
Whats the wisdom on this? I am thinking that a big 470uF reservoir after the rectifiers and then split into two rails via the 5H chokes and only 50uF after the choke to the CT of OPT txfrmer. That should cover all eventualities?