Yes Sorry, not much sense out of me as I am just getting over the MAN Flue/Influenza.
Yes I got 2.1v with the 118 turns, but I could have gone for 15 turns on the primary instead of 14.
But other things come into consideration................... After due consideration of 'oztules' logical 60,000 word of wisdom......
1. I will be using the AC Coupling back charging facility through the toroid so the headroom is approx. 250v.
2. I might also be using low 48v battery voltages, ie getting down I have more space...
"If we wind for a few more volts than we want, our saturation is further away... so say 240 or 260v for a 220v system gives us leeway and lower magnetising current ... from there about 1:8 primary : secondary.. "
3. I added more turns than the suggested minimum of 114, and ended up with 118, because for me it was a darn site easier to remove a couple of turns than to add them at a later stage if need be.
At the time Oztules you did remark that the PJ toroid's seemed better metal.
But interestingly I found this comment by the manufacturers AirLink Transformers........
"Magnetic Degradation...... Occurs when toroidal cores are impregnated with varnish or epoxy coated.
Light impregnated varnish +15%..........Epoxy coated +40%."
My stripped PJ cores were just lightly coated with varnish, where my AirLink cores got glass fibre and epoxy, so I might rethink the core joining process and keep the coating absolutely minimal.
Personally, I am not particularly worried about the magnetic degradation as the OzInverter works and does its job. And besides Reducing degradation may lead to other ramifications.
