hello friends,
i have attached a image with this post in which i wanted to find the value of Ri. It is a dc circuit but the input voltage and current have some ripples so its not a pure dc. I have also frequency of ripple which can be used further to calculate Xc if in case needed. So with all these inputs how to calculate Ri?
i know by calculating the voltage across each element Ri,C1 and Cb(the voltage Vcb is given) the value of Ri can be calculated. But i am not able to calculate the voltage drop across Ri.
please help
thanks
Attached

 

A bigger/more clear drawing would be nice. Ever try LT Spice?

Also need the values of resistors and caps, as well as voltage ripple level and frequency.