Kunezizathu ezintathu zokuthi ukukhanya kwe-LED kube mnyama
Kuvame kakhulu ukuthi izibani ze-LED zizoba mnyama ngemuva kokusetshenziswa isikhathi eside. Zintathu izizathu.
Ama-chips e-LED ayadingeka ukuze asebenze ku-DC low voltage (ngaphansi kuka-20V), kodwa ukunikezwa kwethu okujwayelekile kwamapayipi amakhulu i-AC high voltage (AC 220V). Ukuze uvule amapayipi amakhulu kugesi odingekayo esibani, udinga idivayisi ebizwa ngokuthi "amandla okushayela amanje e-LED."
Ngokombono, inqobo nje uma imingcele yomshayeli ifanisa ubuhlalu besibani, ukunikezwa kwamandla kungasetshenziswa ngokuqhubekayo futhi kusetshenziswe ngokujwayelekile. Izinto zangaphakathi zedrayivu ziyinkimbinkimbi, futhi noma iyiphi idivayisi (njengama-capacitor, ama-rectifiers, njll.) ingase ibangele ushintsho ku-voltage okukhiphayo, okungabangela isibani sibe mnyama.
Ukulimala kwedrayivu kungenye yamaphutha avame kakhulu ezibanini ze-LED futhi ngokuvamile angaxazululwa ngemva kokufaka idrayivu.
I-LED ishile
I-LED ngokwayo yakhiwe ngobuhlalu besibani obubodwa. Uma eyodwa noma ingxenye yayo ingakhanyiswanga, nakanjani izokwenza yonke into ibe mnyama. Ubuhlalu besibani ngokuvamile buxhunywa ngochungechunge bese ngokuhambisana - ngakho-ke uma ubuhlalu besibani obuthile buvutha, bungabangela inqwaba yobuhlalu besibani ukuthi bucime.
Ngemva kokuvutha, ubuso bobuhlalu besibani buba namabala amnyama asobala. Yithole, sebenzisa intambo ukuze uyixhume ngemuva kwesibani, uyifinyeze, noma ubeke ubuhlalu besibani esisha esikhundleni sayo.
Kumane kuqondane ukuthi i-LED ishisa eyodwa ngesikhathi. Uma ivutha njalo, cabanga ngenkinga yedrayivu - okunye ukubonakaliswa kokwehluleka kwedrayivu ukushisa ubuhlalu besibani.
Okubizwa ngokuthi ukubola kokukhanya ukuthi ukukhanya kwe-illuminant kuya phansi futhi kwehla - lesi simo sibonakala ngokucacile ezibani ze-incandescent kanye ne-fluorescent.
Izibani ze-LED azikwazi ukugwema ukubola kokukhanya, kodwa izinga layo lokubola kokukhanya lihamba kancane, kunzima ukubona izinguquko ngeso lenyama. Kodwa-ke, ayikhiphi ama-LED aphansi, noma ubuhlalu bokukhanya obuphansi, noma ngenxa yezinto ezihlosiwe ezifana nokungashisi kahle ukushisa, okuholela ekuboleni kokukhanya kwe-LED ngokushesha.