Hello
We made a xmfr 40:8:8
Which should have reduced Bac 60%, thus hopefully, DC bias value.
But it did nothing to reduce core temp. We ran 100W ...stopped when inside the core temp went up to 130 deg C.
Temp rise is not due to B it would seem.Not due to Hdc either.
In this case. the quick turn-around xmfr in our lab got 1.6 times DCR!
This might explain why temp stayed the same IF NOT HIGHER.
Should we redo with the same DCR as in the 25:5:5 case?
Then only we can tell if proximity or eddy losses are major players. This latter will mean the core material is not power ...But it is EPCOS N87 I think...
Any comment will be highly appreciated.
r
