Ok guys this is my guess and observation to the purpose of the 220 ohm resistor in parallel with the primary coil. I think its to match impedance during "Off" time, gating!

Secondary Coil: 72.4 ohms

L1 Coil: 76.7 ohms

L2 Coil: 70.1 ohms

Total Resistance = Sec+L1+L2

Total Resistance = 72.4 + 76.7 + 70.1

Total Resistance = 219.2 ohms

As for pulse "ON" time, the frequency will do the impedance matching for the VIC Transformer.