Capacitance multiplier in Zen Variations #9

[george_ct]

Does anybody know how much capacitance simulates this capacitance multiplier used by Nelson Pass in Zen Variations #9?

 

[AndrewT]

A lot.
It's the gain of the FET times the 220uF.

 

[AndrewT]

But, I would add a resistor in parallel to C3, to define the Vdrop across the FET as a percentage of Vin.