Gaol: To understand the diode as a rectifier+ smoothing filters.
1/Diode can change the shape of the signal.
2/Half-wave: the positive values of the signal only will be rectified.
3/ The average voltage is the dc voltage.
4/Full-wave: Entire signal will be rectified.
5/The goal of rectifiers: rectify the input ac signal+ converting ac to a dc voltage.
6/dc voltage of full rectifier= 2x the half
7/Ripple = Vmax - Vmin
8/ To minimize the ripple voltage we use RC filter.
9/ Higher values of R or C, smaller the ripple voltage.