It’s definitely a non-trivial task to build a switching power supply that meets the requirements of sensitive electronics like these. Switch mode power supplies aren’t new ideas, either ...
There’s plenty of truth to that old saw, especially when a switch-mode power supply ... on the entire restoration; this one is cued to where the power supply is powered up for the first time.
Given the benefit provided by dual switch flyback, it could be a potential solution to meet the future demand of notebook AC/DC adaptors, LED TV power supply, LED lighting drivers, all in one PC ...