A couple forward converter questions

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notoriusjt2

Joined Feb 4, 2010
209

Vs=170
N1/N2=10
N1/N3=1
Lm=340uH
Lx=20uH
R=10ohms
D=0.3
f=500kHz
determine the output voltage ripple

is my work correct?





here is another similar problem


Vs=125V
Vo=50V
R=25ohms
f=250kHz
D=0.3

determine turns ratio N1/N2

how about this one, does this work appear to be correct?


thank you:)
 
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