i dont really know the technicle side of the flyback drivers, i just biuld them from circuits ive collected and they work great but if you power one driver from a 12 volts lead acid cell with a current of even 2 amps or around that or maybe over or under it works even better but at 12 volts i even used a 12 volts transformer with a low current rateing and it worked ok to so exsperiment and you will find out which works at powering the driver and what dosent work , remember the metal oxide varistor to protect the mosfet , in the driver circuit its a must , in order to petect that static sensitive mosfet to .