Hey
I am new to FEMM, but have a real life problem. I have a transformer, which has 4 layer primary with about 50 turns on each layer (the winding used the entire width of the E core bobbin), and a single layer secondary with 10 turns.
Now, I want to know the leakage inductance with 2 cases:
1: Secondary winding uses the entire width 2: Secondary winding uses 65% of the width, and the copper has the same diameter, so it occupies almost 2 layers (margin tape used on the secondary)I estimate about 40% increase in leakage inductance from some rule of thumb formulas
I could just rewind the bobbin and measure it, but would like a simulation to quantify changes done
So, as for FEMM, are there any way to get started quickly? Perhaps standard transformer models I can modify? (I think FEMM seems like a big learning curve from the get-go)
Thanks
Klaus