T
treez
Guest
Hello,
Can you confirm that in a 15W offline flyback, the hysteresis losses can be reduced significantly by slightly increasing the size of the ferrite transformer's core?
B=phi/A
...therefore, with "A" being bigger, the flux density will be lower in a bigger core, and thus the change of flux density throughout the switching cycle will be lower, and therefore the hysteresis losses will be lower in the bigger core.
Also, is it easier to wind a bigger core for lower leakage inductance, than a smaller core?......this is because of the greater "coupling area" of turns that one can achieve by using the next size up of ferrite core.
Can you confirm that in a 15W offline flyback, the hysteresis losses can be reduced significantly by slightly increasing the size of the ferrite transformer's core?
B=phi/A
...therefore, with "A" being bigger, the flux density will be lower in a bigger core, and thus the change of flux density throughout the switching cycle will be lower, and therefore the hysteresis losses will be lower in the bigger core.
Also, is it easier to wind a bigger core for lower leakage inductance, than a smaller core?......this is because of the greater "coupling area" of turns that one can achieve by using the next size up of ferrite core.
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