thanks for your answer
i need to analyse the efficiency of a AC/DC charge pump,
so i need to know the power loss of a sine wave charging a capacitor firstly.
but the general thesis and data is only analysis the DC/DC capacitor charging loss.
In this paper "A new visit to an old...
A sine wave source charge a capacitor through a diode.
Is it more efficiency than a DC source charging a capacitor ?
base on this
https://www.physicsforums.com/attachment.php?attachmentid=17653&d=1235114409