ieales
Not so. Full current is supplied by the PSU caps.You’re either deliberately splitting hairs here, or just not reading carefully. Obviously, the PSU caps can’t supply current to components not connected to it, but which are connected to other dedicated lines and power supplies. Those components are indeed powered by their individual caps which are charged by ... the line. They can’t be charged by the line if it has run out of current - hence the advantage of dedicated lines. (And a reason to not power all components from the same leg - but that’s a separate and debatable issue.)