Esinye sezihloko ezishushu kutsha njeI-LEDIshishini lonikezelo lwamandla likhokelwa rhoqo amandla okuqhuba. Kutheni kufuneka ii-LEDs ziqhutywe ngumbane oqhubekayo? Kutheni ungaqhubeki amandla rhoqo?

Ngaphambi kokuxoxa ngesi sihloko, kufuneka siqale siqonde ukuba kutheni ii-LED kufuneka ziqhutywe ngokuqhubekayo?

Njengoko kubonisiwe lijiko le-LED IV kumzobo (a), xa amandla ombane angaphambili e-LED etshintsha nge-2.5%, ukudlula ngoku kwi-LED kuya kutshintsha malunga ne-16%, kwaye amandla ombane angaphambili e-LED achaphazeleka lula ubushushu. Umahluko weqondo lobushushu phakathi kwamaqondo obushushu aphezulu naphantsi uya kwenza umsantsa wokutshintsha kwamandla ombane ube phezulu ukuya kutsho kuma-20%. Ukongeza, ukukhanya kwe-LED kuhambelana ngokuthe ngqo kwi-front current ye-LED, kwaye umahluko ogqithiseleyo wangoku uya kubangela ukuguqulwa kokukhanya okugqithisileyo, ngoko ke, i-LED kufuneka iqhutywe ngokuqhubekayo.

Nangona kunjalo, ngaba ii-LED zinokuqhutywa ngamandla angatshintshiyo? Okokuqala, ngaphandle komcimbi wokuba amandla angatshintshiyo alingana nokuqaqamba okungapheliyo, kubonakala ngathi kunokwenzeka ukuxoxa nje ngokuyilwa komqhubi wamandla rhoqo ngokwembono yokutshintsha kwe-LED IV kunye nejika lobushushu. Ke kutheni abavelisi babaqhubi be-LED bengayili ngokuthe ngqo abaqhubi be-LED ngokuqhuba amandla rhoqo? Zininzi izizathu ezibandakanyekileyo. Akunzima ukuyila intambo yamandla eqhubekayo. Logama nje idityaniswe ne-MCU (iyunithi yolawulo oluncinci) ukubona amandla ombane aphumayo kunye nangoku, lawula i-PWM (i-pulse wide modulation) uxanduva lomjikelo ngokubalo lwenkqubo, kunye nokulawula amandla okuphuma kwigophe lamandla angaguqukiyo ablue emfanekisweni (b ), ukuphuma kwamandla rhoqo kunokufezekiswa, kodwa le ndlela yonyusa iindleko ezininzi, Ngaphezu koko, kwimeko yomonakalo wesiphaluka esifutshane se-LED, umqhubi we-LED wamandla angaguqukiyo uya kwandisa yangoku ngenxa yokufumanisa umbane ophantsi, onokubangela umonakalo omkhulu. Ukongeza, iqondo lokushisa kwe-LED liyi-coefficient yeqondo lokushisa elibi. Xa ubushushu buphezulu, silindele ukunciphisa imveliso yangoku ukugcina ukusebenza okuphezulu kobomi be-LED. Nangona kunjalo, indlela eqhubekayo yamandla iyangqubana nale ngqalelo. Kwizicelo zobushushu obuphezulu be-LED, umqhubi we-LED wandisa imveliso yangoku kuba ibona umbane ophantsi.

Ukuqwalasela le miba ingentla, "i-quasi rhoqo amandla" umqhubi we-LED obonelela abathengi ngoluhlu olubanzi lwe-voltage / imveliso yangoku sesona sisombululo singabizi kakhulu kubathengi. Amandla rhoqo LED umqhubi iphawulwe ezinye iimveliso Mingwei wamkela uyilo oluphuculweyo olu hlobo amandla rhoqo, ejolise ukubonelela abathengi uluhlu olubanzi ombane / imveliso yangoku. Ayinako ukuhlangabezana neemfuno zabasebenzisi kuphela, kodwa kwakhona ukuphepha ukunyuka kweendleko okubangelwa kuyilo olungaphezulu okanye inkathazo ebangelwa yimpawu ze-LED, kwaye ibangele ukusilela kwesibane, Ukubonelela ngoluhlu olubanzi lweemveliso zoyilo kunye namandla afanayo angatshintshiyo anokuthiwa esona sisombululo sisebenzayo sonikezelo lwamandla okuqhuba i-LED kwimarike.