Sorry if my searched missed a probably self answering question, but I have little experience with SMPS.
As I want a +/- 15 to 18V supply, there is nothing from stopping me from using two wall-wart SMPS supplies with the output reversed on one for the negative rail as there is no reference to any common ground point with respect to the AC in. Circuit ground being the center.
As I want a +/- 15 to 18V supply, there is nothing from stopping me from using two wall-wart SMPS supplies with the output reversed on one for the negative rail as there is no reference to any common ground point with respect to the AC in. Circuit ground being the center.
Essentially correct. The outputs will be connected in series, and the middle node (+ of the bottom and - of the top) will be output ground. (Which is exactly what we do in linear bipolar supplies, so no big deal)
Wall warts rather don't, as their plug usually is like the Green Manalishi's crown: Two pronged, without PE.
Best regards!
Best regards!