Hi all 

I want to make a generator to charge up my phone ..may you help to find a good circuit to protect my phone from unstable speeds and improve the ripple factor?
I know i can buy one but i want to learn how to make my own


I want to make a generator to charge up my phone ..may you help to find a good circuit to protect my phone from unstable speeds and improve the ripple factor?
I know i can buy one but i want to learn how to make my own