New PS design? No... IMO - in the begining (V1.0), it`s best to use simple PS design, later...who knows? And about building from the schematics - just ask, I`m sure that someone would jump in with help/instructions/tweaks/opinions, etc.:-) For the start, download DN2540 and 5687 data, plus the data for your favorite rectifier, for example EZ80/6V4, EZ81/6CA4...