Hi to all. I am looking to desigh a power supply , based largely on the Design Idea DI-117 from Power Integrations Link :
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The question I have is what is the reason for the big difference in value of L4 and L5. 1mH and 3.3uH respectively. The 2 inductors are there as a filter in conjunction with the resivour cap which has been split into 10u and 22u. The rest of the circuit is fairly strait forward , but I'm a little unsure about these inductors.
Cheers Rob