Diyode isohora urumuri, cyangwa LED muri make, ni igikoresho cya semiconductor gihindura ingufu z'amashanyarazi imbaraga zumucyo.Iyo umuyaga runaka ujya imbere unyuze mu muyoboro, imbaraga zirashobora kurekurwa muburyo bwurumuri.Imbaraga za luminous zigereranijwe hafi yimbere yimbere.Ibara rimurika rifitanye isano nibikoresho byigituba.
Ubwa mbere, ibintu nyamukuru biranga LED
(1) Umuvuduko wakazi ni muke, kandi bamwe bakeneye 1.5-1.7V gusa kugirango bacane itara;(2) Imikorere ikora ni nto, agaciro gasanzwe ni 10mA;.(4) Ifite imiterere isa na voltage stabilisation nka silicon zener diode;.noneho ubuzima bwa serivisi ni burebure, Mubisanzwe bigera kumasaha 100.000 cyangwa arenga.
Kugeza ubu, diode ikunze gukoreshwa itanga urumuri ni umutuku nicyatsi kibisi cya fosifore (GaP) LED, zifite umuvuduko wimbere wa VF = 2.3V;fosifore itukura arsenic fosifore (GaASP) LEDs, igabanuka ryumuvuduko wimbere ni VF = 1.5-1.7V;naho kuri LED yumuhondo nubururu ukoresheje silicon karbide nibikoresho bya safiro, imbere ya voltage igabanuka VF = 6V.
Bitewe n'umuvuduko ukabije wa volt-ampere umurongo wa LED, rezistor igabanya imipaka igomba guhuzwa mukurikirane kugirango wirinde gutwika umuyoboro.Mumuzunguruko wa DC, inzitizi igabanya ubukana R irashobora kugereranywa ukoresheje formula ikurikira:
R = (E-VF) / NIBA
Mumuzunguruko wa AC, kurwanya-kugabanuka kurubu R irashobora kugereranywa nuburyo bukurikira: R = (e-VF) / 2IF, aho e nigiciro cyiza cyumuriro w'amashanyarazi ya AC.
Icya kabiri, ikizamini cya diode itanga urumuri
Mugihe nta gikoresho kidasanzwe, LED irashobora kandi kugereranywa na multimeter (hano MF30 multimeter ifatwa nkurugero).Ubwa mbere, shyira multimeter kuri Rx1k cyangwa Rx100, hanyuma upime imbere na revers ya LED.Niba kurwanya imbere biri munsi ya 50kΩ, kurwanya ibinyuranyo ni ntarengwa, byerekana ko umuyoboro usanzwe.Niba ibyerekezo byimbere nibisubira inyuma ari zeru cyangwa bitagira umupaka, cyangwa indangagaciro zo kurwanya imbere ninyuma zegeranye, bivuze ko umuyoboro ufite inenge.
Noneho, birakenewe gupima urumuri rwa LED.Kuberako igabanuka ryayo rya voltage iri hejuru ya 1.5V, ntishobora gupimwa neza na Rx1, Rx1O, Rx1k.Nubwo Rx1Ok ikoresha bateri ya 15V, kurwanya imbere ni hejuru cyane, kandi umuyoboro ntushobora gufungura kugirango utange urumuri.Nyamara, uburyo bwa metero ebyiri burashobora gukoreshwa mugupima.Multimetero ebyiri zahujwe murukurikirane kandi byombi bishyirwa mumwanya wa Rx1.Muri ubu buryo, ingufu za bateri zose ni 3V naho kurwanya imbere ni 50Ω.Imikorere ikora ihabwa L-icapiro irenze 10mA, irahagije kugirango umuyoboro ucane kandi utange urumuri.Niba umuyoboro utamurika mugihe cyizamini, byerekana ko umuyoboro ufite inenge.
Kuri VF = 6V LED, urashobora gukoresha indi bateri ya 6V hamwe na rezistor igabanya ubukana kugirango ugerageze.
Igihe cyo kohereza: Werurwe-19-2020
