Seeing what comes out of a DC to AC inverter.
DC-AC Inverter 12V to 220V 35W Boost Step UP Power Module #Unbranded http://www.ebay.com/itm/DC-AC-Inverter-12V-to-220V-35W-Boost-Step-UP-Power-Module-/351711673602
https://en.wikipedia.org/wiki/Royer_oscillator