Simple HT supply build

[ppppenguin]

Are Class 2 wall warts and "lump in cord" PSUs really that bad? I know the CE mark is widely abused but double insulated equipment should really be able to pass the high voltage flash test.

I've just looked at the 5V switchmode PSU supplied with a Samsung phone. It's a genuine Samsung part. It has the double square mark for Class 2. I don't plan to test it to destruction with a high voltage.