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thank you my friend . you are right ! I have been make a mistake.
but another question !
i read AN4137 fairchild application note but I dont understand design feed back loop section that present one-zero one-pole compensation circuit . what is the necessity of one-zero one-pole compensation...
I choose core according to tables suggested with fairchild datasheets and i set the primary wiring number based on saturation restriction then i have large inductance , where i made mistake that it is not uneconomic ?
best regards
hello
I'm going to make a offline fly back converter and i have heard that its recommended to set ripple factor to 0.1 to 1.
but all of core i found have big Al (small reloctance) and after wiring they have large inductance even with reasonable air gap. then i have to use very low ripple...
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