I have a general question concerning calculating the ripple voltage in an LCRCRCRC (after the rectifier bridge). (In my case, it's for tube pre-amplifier, with a shunt regulator following the PSU filtering. However it is a general question for such filtering).

I know that Ripple V = I / (f * C), or It = CV. However, that formula applies to 1 capacitor in the filter (or few parallel capacitors, which are calculated as 1 big capacitor).

I also know that for 1/2C*R*1/2C the ripple is lower than for 1C.

Is there a formula, or another way, to calculate, or simulate, the ripple voltage for CRC filer?

Also, is there a formula, or another way, to calculate, or simulate, the ripple voltage for LC or LCRC filer?