See Fig. 2. Fig. 2: simple bipolar (+/−) power supply with active ground for use with the line driver circuit. You’ll also connect the transformer wall supply’s plus lead to pin 8 of your dual IC ...

This gate-drive transformer (GDT)circuit allows the drive signal to the MOSFET to range from 50% down to 0%, while still offering a fast turn-off that cannot be accomplished with a simple load ...