I understand the process of rectification but just only in theory. But I still have questions that I guess will be answered if I can experience or has experience about it (but sadly I don't have). Please kindly answer these questions: 1. Does the waveform of Vout can be considered as DC ( having imperfections in it) or it is still an AC? 2. Does the maximum voltage is still 220 VAC in the output waveform or I can apply the theoretical approach wherein there is some drop on LED (about 0.7 V) making the maximum voltage in the output waveform as 219.3 VAC?