Luminous Diode Resistance Ulwazi olubandayo

Ngaba kufuneka ndongeze ukuxhathisa? Kuya kwenzeka ntoni ngaphandle kokuchasana ngaphandle kombane? Ewe, i-diode ekhupha ukukhanya kufuneka yongezwe ngokuxhathisa ukusetyenziswa. I-diode ekhupha ukukhanya ayikwazi ukuba ngqo kwi-voltage ethile. Ukumelana nokuhamba kufuneka kukhawulelwe. Kungenjalo. Kutheni i-diode ekhupha ukukhanya ingakwazi ukudibanisa ngokuthe ngqo kwi-voltage glow diode engakwazi ukudibanisa ngokuthe ngqo kuzo zombini iziphelo zombane zibangelwa ikakhulu zizizathu ezibini: 1) ukuhla kwamandla ombane akuhambelani; 2) utshintsho lwangoku lukhulu. Isizathu singezantsi. Ukuhla koxinzelelo oluhle lwe-diode ekhupha ukukhanya kuyahluka. Xa usebenza ngokuqhelekileyo, i-diode ekhupha ukukhanya iya kuba noxinzelelo oluhle lwe-VF. I-VF ayilona xabiso lithile, kodwa ngumda. Ukuthatha i-diode yokukhanya okubomvu njengomzekelo, uluhlu lwe-VF (1.7-2.2) V, kwaye ixesha ngalinye Ukuhambelana kweempawu ze-diode yokukhanya akulungile, kwaye kuyahluka kancinci, ngoko kunzima ukuyifumana. amandla ombane alungele yonke idiode. 2. Indlela echanekileyo yokukhanyisa i-diode ekhuphayo. I-diode ekhupha ukukhanya ngokubanzi ineendlela ezimbini zokuqhuba. Indlela yokuqala kukudibanisa kunye nentambo yangoku -incinci yokumelana nombane; indlela yesibini kukusebenzisa umthombo wangoku oqhubekayo ukuqhuba. Umqhubi wombane othe rhoqo. Ukuze uthintele i-current ukuba ibe nkulu kakhulu, i-diode ekhupha ukukhanya itshiswa, kwaye i-diode ekhupha ukukhanya kunye ne-current-limiting resistance resistance kufuneka ibe ngumsinga. Ixabiso lokuchasana ligqitywe ngezi fomyula zilandelayo: R = (V-Vf)/i. Phakathi kwazo, i-VF yi-voltage yangaphambili ye-diode ekhuphayo, kwaye i yangoku endifuna ukuhamba ngayo. Ukuthatha i-diode yokukhupha ukukhanya okubomvu njengomzekelo, uluhlu lwe-voltage ye-VF yangaphambili ye-VF (1.7-2.2) V kunye nokusebenza kwangoku yi-2-25mA. Ukuba uzisa kwifomula. Le ndlela yokuqhuba isetyenziswa ngokuqhelekileyo kwimeko apho inani le-LED lincinci. Ukuba isetyenziswe njengesalathisi samandla kunye ne-alarm indicator light circuit, ukuba inani le-diode yokuqhuba likhulu, unokuqwalasela ukusebenzisa umqhubi womthombo wangoku. Umthombo weHengliu usetyenziswa ngokubanzi kushishino lokukhanyisa ekhaya. Ekubeni zonke ii-LED zixhunyiwe kwi-series, ngokude nje ukuba i-LED enye yonakaliswe, zonke ii-LED azikhanyisi. 3. Ukuthelekiswa kweendlela ezimbini zokuqhuba, indlela yangoku yokumelana nokunciphisa, isetyenziswa kakhulu kwimeko apho inani leentsimbi ze-LED lincinci. Inzuzo kukuba isiphaluka silula, kwaye i-disadvantage kukuba ukuncitshiswa kwengcinezelo efanelekileyo ye-diode ekhupha ukukhanya akuhambelani, ngoko ukukhanya kokusetyenziswa okuninzi kuyahluka. Indlela yokuqhuba yomthombo we-Hengliu inokuqinisekisa ukuba ukugqama kwe-diode nganye ekhuphayo iyafana, kodwa umonakalo weentsimbi zesibane ze-LED ziya kuchaphazela ukusebenza kwazo zonke izibane zesibane se-LED. Shwankathela iidiode ezikhupha ukukhanya azikwazi ukusetyenziswa ngokuthe ngqo kunikezelo lwamandla.