SMPS transformer has square spool

Flyback

Well-Known Member
Hi,
The below E25 bobbin is square, ...surely that has more chance of stressing the enamel insulation at the corner bits?

E25 bobbin
 
Surely? Please explain. But as you explain, consider that the cross section of every E- core is square and every toroid's cross-section is square or rectangular.
 
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