How to calculate Bobbin for EI steel core [ power transformer up to 2kva]
I found some standard bobbin like EI43 ,EI16 in our market, how the 43 or 16 came in to here ,what calculations are there ?
You find bobbin dimensions for industry standard laminated steel cores in transformer design handbooks and manufacturer catalogs, no design job in the first place. Custom designed sheet stacks and respective bobbins may be useful in some cases.