Iingxaki eziqhelekileyo kunye neeDiodes ezikhanyayo Ngaba

Ngaba ukhe wadibana neengxaki ezininzi ongaziqondiyo, kwaye zeziphi iingxaki eziqhelekileyo? Kutheni le nto i-diode ekhupha ukukhanya ingenakuba yi-overvoltage okanye i-overcurrent isebenzisa ukukhanya okumhlophe kwe-LED? Ukubeka nje, icaciswa yeyona isetyenziswa ngokuqhelekileyo i-5mm emhlophe ye-LED. I-voltage yayo yokusebenza eqhelekileyo iphakathi kwe-3.0-3.5V uluhlu, kwaye ukusebenza okuqhelekileyo kwangoku yi-20mA 20mA. Nangona kunjalo, abantu abaninzi ngephutha bacinga ukuba ukusetyenziswa kokukhanya okumhlophe kwe-LEDs kunye ne-over-voltage okanye i-overcurrent kuya kuqaqamba ngakumbi, kwaye umphumo wangempela wokuvavanya kukuba emva kwe-15mA, i-optical flux iyanda ngokukhawuleza. Emva kwe-20mA, phantse akukho ukubona. Kodwa kukho umkhuhlane ocacileyo. Kukho novavanyo lobomi: i-20mA isebenze inyanga, kwaye i-attenuation yi-5% kuphela. Ngoku kukho i-95% ye-optical flux. Xa i-30mA isebenza kude kube yi-19 iintsuku, umthamo wokukhanya ngu-50% kuphela. Inokuqwalaselwa ukuba ukukhanya okumhlophe kwe-LED okunokusebenza iiyure ezingama-100,000 phantsi kweemeko eziqhelekileyo kusetyenziswe kwimisinga emikhulu, kunye neeyure ezingama-600 kuphela! Ii-LED zingasetyenziselwa iiyure ezingaphezu kwe-50,000 kwiinkcazo eziqhelekileyo, kwaye abanye abavelisi bathi i-LED yayo inokusebenza malunga neeyure ze-100,000, kodwa oku akuqinisekisi ukuba iimveliso ze-LED zingasetyenziselwa ixesha elide. Ukusebenza okungalunganga kunye nenkqubo kulula “Tshabalalisa ”Ii-LED, ii-LED ziya kuhla kancinci ngokuhamba kwexesha. Ezinye iingqikelelo zibonisa ukuba ii-LED ezikumgangatho ophezulu zinokugcina ngaphezulu kwe-60% yokukhanya kokukhanya kokuqala emva kweeyure ezingama-50,000 zokusebenza ngokuqhubekayo. Ukwandisa ubomi be-LED, kuyimfuneko ukunciphisa okanye ukugxotha ngokupheleleyo amandla okushisa awenziwe yi-chip ye-LED. Amandla obushushu sesona sizathu sibangela ukuba i-LED iyeke ukusebenza. Oku kucaciswa kusetyenziso lwee-diode ezikhupha ukukhanya. Ngolwazi oluthe kratya, nceda uqhagamshelane nenkonzo yabathengi kwi-intanethi ngolwazi olungakumbi.