I'm not saying that Dart's technique is directly applicable. What I am saying: Fundamentally rethinking assumptions (like operating frequency) is probably crit

I'm not saying that Dart's technique is directly applicable. What I am saying: Fundamentally rethinking assumptions (like operating frequency) is probably critical to a breakthrough in inverter design. BTW.... Dart and others (like the iPad recharger [1]) typically convert AC->HV DC (rectifier)->Flyback (at 10's of kHz)->low voltage DC. The intermediate conversion to DC followed by "chopping" at a higher frequency on the flyback transformer allows designers to use smaller magnetics than what would be required of "classic" 50-60Hz wallwarts. I'm sure you're already well aware of all of this given your comment. But so am I (despite the comments suggesting I'm misunderstanding converters-vs-inverters). ;-) If the Google call is for energy generation, then there's also the added difficulty of maximum power-point tracking as well... [1] http://www.righto.com/2014/05/a-look-inside-ipad-chargers-pricey.html http://www.righto.com/2014/05/a-look-inside-ipad-chargers-pr...