sean...60 Hz ac sinewave input power is at zero volts 120 times per second, and below rail voltage most of the time. (That's why we found a square wave power input was better).
Outboard location of some PS capacitance is OK. After all, some designs (usually "High End") put the entire PS on a separate chassis. Also, it is usual to have some small amount of PS capacitance distributed right on the active circuit boards to minimize the effect of inductance between the PS and the circuits.
Shall we now start a bragging contest to see who has the biggest capacitor :-)
Outboard location of some PS capacitance is OK. After all, some designs (usually "High End") put the entire PS on a separate chassis. Also, it is usual to have some small amount of PS capacitance distributed right on the active circuit boards to minimize the effect of inductance between the PS and the circuits.
Shall we now start a bragging contest to see who has the biggest capacitor :-)