an electronic high frequency induction heater driver , for a variable spray fuel injection system , uses a scalable array of zero - voltage switching oscillators that utilize full and half - bridge topology wherein the semiconductor switches are synchronous within each bridge for function , and each bridge is synchronized for function along the entire array . the induction heater driver , upon receipt of a turn - on signal , multiplies a supply voltage through a self - oscillating series resonance , wherein one component of each tank resonator circuit comprises an induction heater coil magnetically coupled to an appropriate loss component so that fuel inside a fuel component is heated to a desired temperature .