Using the stoker on a smoker made out of a 500gal tank. Need a larger fan/blower than what is available. My understanding is that the fans from Rocks are 5v DC. Guessing it would take a relay with a 5V DC pick voltage that would go to either a 12 or 24v DC relay that would control the 120v AC to the fan. Has anybody tried using AC fans? or anybody have some thoughts, experience or insight?