1. Kuchinja uye kugadzira denderedzwa remasaini echikamu chefrequency. Chiratidzo chemagetsi chejenareta kana kuti power grid line voltage chinotanga chatora chiratidzo che clutter chiri mu voltage waveform kuburikidza ne resistance uye capacitance filtering circuit, uye chobva chachitumira kune photoelectric coupler kuti chigadzire rectang...