On a slightly unrelated note, why do we manufacture "bulbs" that contain their own ballast/inverter that screw into a 110 socket? Why do we sell everything with an external or built in adaptor, to plug into a 110 socket? It seems to me it's just legacy compatibility layer middleware, I can't think of anything outside of a kitchen that actually needs 110. Why don't we just start building houses with 12v connections for LED strips, since they run on that anyway? One inverter in the garage, some low voltage wiring around the house, done. It seems it would be cheaper, more efficient and more versatile to do this rather than wire a whole house for 110/220 and then every appliance have it's own AC -> DC and step down transformer to account for the fact that our electricity needs have drastically changed since 100 years ago.