Isistimu yokufiphalisa ye-LED yesikhathi esizayo
Ngakho-ke hlobo luni lwesistimu yokufiphala okufanele ama-LED ayisebenzise?
4.1 I-PWM Dimming
Njengoba kushiwo ngaphambili, ukufiphala kwe-LED kungcono kakhulu ukusebenzisa i-PWM dimming. Uma usebenzisa ukufiphalisa kwe-PWM, ungafaka ijeneretha ye-PWM elula kuswishi yodonga, bese usebenzisa i-potentiometer ukulawula isilinganiso somsebenzi we-PWM ukuze ufinyelele ukufiphala. Kodwa uma ufuna ukuvula nokuvala izibani, udinga ukwengeza izintambo ezimbili. Ngakho-ke, ayihambisani nokuhola kwe-thyristor switch odongeni lwangempela. Ukushintsha kwe-thyristor kwasekuqaleni kunemikhondo emibili kuphela, engafiphazwa futhi ishintshwe. Le nzuzo inzima ukuhambisana. Kodwa-ke, empeleni, izibani ezikhanyayo ezisetshenziswa kakhulu izibani zedeski noma izibani ezimile. Lezo zinguquko ze-dimmer zifakwe entanjeni yamandla esikhundleni sodonga, ngakho-ke akunandaba ukusebenzisa imikhondo emibili odongeni. Ngamanye amazwi, ukufiphala kwe-PWM kungasetshenziswa ngokuqondile ezibani zetafula ezifiphalisayo.
