I-LED Constant Current Power Supply
Ukunikezwa kwamandla kwamanje kwe-LED kusetshenziselwa ukunikeza amandla ezibani ze-LED. Njengoba ukugeleza kwamanje kuma-LED kutholwa ngokuzenzakalelayo futhi kulawulwe ngesikhathi sokusebenza kokuphakelwa kwamandla, asikho isidingo sokukhathazeka ngokuthi ukugeleza kwamanje ngokweqile kuma-LED ngesikhathi sokukhanyisa, futhi asikho isidingo sokukhathazeka mayelana nokujikeleza okufushane umthwalo, ukudiliza ukunikezwa kwamandla.
Imodi yamanje yokushayela engaguquki ingagwema ukuguqulwa kwamandla kagesi oya phambili we-LED futhi ibangele ukushintshashintsha kwamanje, kuyilapho ukusebenza okuqhubekayo kwenza ukukhanya kwe-LED kuzinze, futhi ilungele ifekthri yesibani se-LED ukuqinisekisa ukungaguquguquki komkhiqizo lapho kwenziwa ukukhiqizwa ngobuningi. Ngakho-ke, abakhiqizi abaningi sebevele bazi ngokugcwele ukubaluleka kwamandla okushayela. Abakhiqizi abaningi bezibani ze-LED bayilahlile imodi ye-voltage engaguquki, futhi basebenzise imodi yamanje ebiza kancane ethe xaxa ukushayela ukukhanya kwe-LED.
Abanye abakhiqizi bakhathazekile ngokuthi ukukhetha kwe-electrolytic capacitors ebhodini lomshayeli wamandla kuzothinta impilo yokunikezwa kwamandla. Eqinisweni, kuwukungaqondi. Isibonelo, uma kusetshenziswa ama-degree angu-105, izinga lokushisa eliphezulu le-electrolytic capacitor eliphila amahora angu-8000 lizoncishiswa ngama-degree angu-10 ngokweminyaka yokuphila yamanje yama-capacitor e-electrolytic, futhi ubude bokuphila komshayeli buphindwe kabili, ngakho-ke unempilo yokusebenza Amahora angu-16,000 endaweni ye-95 degree, impilo yokusebenza yamahora angu-32,000 endaweni engama-85 degree, kanye nempilo yokusebenza yamahora angu-64,000 endaweni ye-75 degree. Uma izinga lokushisa langempela lokusebenza liphansi, khona-ke impilo izoba yinde! Kuleli phuzu lokubuka, alinawo umthelela empilweni yamandla okushayela inqobo nje uma sikhetha ama-electrolytic capacitor ekhwalithi ephezulu.
Kukhona nephuzu elilodwa elifanele ukunakwa ezinkampanini ezikhanyisa i-LED: Njengoba i-LED izokhipha ukushisa okukhulu phakathi nenqubo yokusebenza, izinga lokushisa lokusebenza lokukhanya lizokhuphuka ngokushesha. Ukuphakama kwamandla e-LED, umphumela wokushisisa uba mkhulu. Ukwenyuka kwezinga lokushisa kwe-chip ye-LED kuzoholela ekusebenzeni kwedivayisi ekhipha ukukhanya. Ushintsho kanye nokusebenza kahle kokuguqulwa kwe-electro-optical kuyancishiswa, futhi kuhluleke ngisho nalapho isimo sisibi. Ngokohlolo lokuhlola, ukukhanya okukhanyayo kwehla ngo-3% kukho konke ukukhuphuka okungu-5 degrees Celsius kwezinga lokushisa le-LED ngokwayo. Ngakho-ke, isibani se-LED kufanele sinake ukuchithwa kokushisa komthombo wokukhanya we-LED ngokwawo. Zama ukwandisa indawo yokukhipha ukushisa yomthombo wokukhanya we-LED ngangokunokwenzeka, bese uzama ukunciphisa izinga lokushisa lokusebenza kwe-LED ngokwayo. Uma izimo zivuma, kungcono ukuhlukanisa ingxenye yomthombo wamandla nengxenye yomthombo wokukhanya. Akufanelekile ukuphishekela ivolumu encane ngokungaboni futhi ungayinaki izinga lokushisa lokusebenza kwesibani kanye nokunikezwa kwamandla.