Hi all,
Now I think i do some misunderstanding, on some terms......
So:
1° question:
- say 2 gapped N27 with gap= 0,10 x 2
In this case, calculation is:
- '' s '' is for 0,2 mm? and so i must correct Al value of datasheet?
- or '' s '' is for '' new gap '' , and with Al initial value, in right side,I can get it?
View attachment PDF_ECoresGeneralInformation.pdf
2° question: if i add 2 N27 cores :
- ungapped N27 core with Al value of 2400 nH
- gapped N27 core with Al value of 790 nH
What's the resulting value , if it is possible ?
In short: - for an inductor, gap needed, or for a ring choke '' in the material grains ''
- transformer no gap needed?
3° question:
I plan to replace initial power trany - central tapped secondary - with a 1:3 with no CT secondary, than rectifying bridge of course, L and C also for output filtering.
I know from google and google a lot - and stiiiiill to do - that with this, I'm going to get double ripple: choice for ease of building a foil smps transformer only.
What do you think of all above?
Gate drive transformer: - Coilcraft products SD2503L
View attachment CoilCraft-Datasheet.pdf
- Murata products 76602/1C or 1026C by example.
As usual, thanks a lot.
jm