1. N=Saturation flux*pathlength/permeability*current.
To find maximum number of turns allowed for primary and secondary
coils before reaching saturation of the core. It would be ideal to
operate the inductor near the saturation point of the core.
2. L/N^2=Inductance factor. This factor
is given by the manufacturer to determine the number of turns needed
for a certain inductance. For the primary coil, N=3.3 and for the
secondary, N=6.6. These N's are rounded up to 4 and 8 to keep the
2:1 turns ratio needed for a 2:1 primary coil/secondary coil current
ratio.
3. Since 16 gauge wire
is needed for the current in the primary coil, four 22 gauge wires
were soldered together instead to created the same area and ease the
winding process. Three 22 gauge wires were used for the eight turns
in the secondary coil instead of one 18 gauge wire.
4. 1/C*(1/2*Pi*Frequency)^2=L.
The inductor was tested to measure its inductance by placing a capacitor
in parallel with each coil and finding the frequency were the amplitude
is the greatest. The results gave the expected 4:1 inductance ratio
obtained by theoretical analysis.
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