Kunezinhlobo eziningi zemikhiqizo yokubonisa i-elekthronikhi ye-LED, kodwa izici zazo ezivamile ukuthi kufanele zisebenzise ugesi we-DC kanye ne-voltage ephansi yokusebenza yedivayisi eyodwa, futhi umjikelezo wokuguqula kufanele usetshenziswe lapho kusetshenziswa amandla edolobha.Ezimweni ezihlukene zokusetshenziswa, kunezixazululo ezihlukene ekugcwalisekeni kobuchwepheshe kwesiguquli samandla e-LED.

Ngokusho kwamandla kagesi, abashayeli be-LED bangahlukaniswa ngezigaba ezintathu: eyodwa inamandla ebhethri, ikakhulukazi esetshenziselwa imikhiqizo ye-elekthronikhi ephathekayo, ukushayela ama-LED amhlophe anamandla aphansi naphakathi;enye igesi elingaphezu kuka-5, elinikwa amandla amandla azinzile noma ibhethri, njengeziguquli ze-DC ezehlayo, ezehlayo nezehlayo (iziguquli; eyesithathu inikwe amandla ngokuqondile amapayipi amakhulu (110V). noma 220V) noma i-high-voltage eqondile ehambisanayo (efana no-40~400V), esetshenziswa kakhulu amandla aphezulu wekamela I-LED Emhlophe, njengesiguquli se-DC/DC esehlayo.

1. Isikimu sokushayela esisebenza ngebhethri

I-voltage yokunikezwa kwebhethri ngokuvamile ingu-0.8~1.65V.Kumadivayisi okukhanyisa amandla aphansi njengezibonisi ze-LED, lokhu kuyinto evamile yokusetshenziswa.Le ndlela ifaneleka kakhulu emikhiqizweni ye-elekthronikhi ephathekayo ukushayela ama-LED amhlophe anamandla aphansi naphakathi, njengamathoshi e-LED, izibani eziphuthumayo ze-LED, izibani zedeski ezonga amandla, njll. Uma ucabangela ukuthi kungenzeka ukusebenza ngebhethri le-AA futhi ibe nevolumu encane kakhulu, isixazululo esingcono kakhulu sobuchwepheshe isiguquli sepompo yokushaja, njenge-boost DC Zhuang (isiguquli noma i-boost (noma Ezimbalwa zeziguquli zephampu zokushaja zohlobo lwe-buck-boost zingabashayeli abasebenzisa amasekhethi e-LDO.

2. I-voltage ephezulu kanye nohlelo lokushayela olomile

Uhlelo lokunikezwa kwamandla kagesi aphansi olunamandla kagesi angaphezu kuka-5 lusebenzisa ukunikezwa kwamandla okuzinzile okuzinzile noma ibhethri ukunikeza amandla.Inani lamandla kagesi we-LED lihlala liphezulu kunokwehla kwamandla kagesi weshubhu le-LED, okungukuthi, lihlala lilikhulu kuno-5V, njenge-6V, 9V, 12V, 24V noma ngaphezulu.Kulokhu, inikwa amandla amandla kagesi azinzile noma ibhethri ukushayela izibani ze-LED.Lolu hlobo lohlelo lokuphakelwa kukagesi kumele luxazulule inkinga yokwehla kokuphakelwa kukagesi.Izicelo ezijwayelekile zifaka izibani zelanga, izibani zengadi yelanga, nezinhlelo zokukhanyisa izimoto.

3. Isikimu seDrayivu sinikwe amandla ngokuqondile amapayipi amakhulu noma amandla aqondile anamandla aphezulu

Lesi sixazululo sinikwa amandla ngokuqondile amapayipi amakhulu (i-100V noma i-220V) noma i-high-voltage eqondile yamanje eqondile, futhi sisetshenziswa kakhulu ukushayela izibani ze-LED ezinamandla amakhulu.I-Mains drive iyindlela yokuphakela amandla enenani eliphakeme kakhulu lenani lesibonisi se-LED, futhi iyisiqondiso sokuthuthukiswa kokuduma nokusebenzisa izibani ze-LED.

Uma usebenzisa amandla amakhulu ukushayela i-LED, kuyadingeka ukuxazulula inkinga yokunciphisa i-voltage nokulungiswa, kodwa futhi ube nokusebenza kahle kokuguqulwa okuphezulu, umthamo omncane kanye nezindleko eziphansi.Ngaphezu kwalokho, indaba yokuhlukaniswa kwezokuphepha kufanele ixazululwe.Kucatshangelwa umthelela kugridi yamandla, ukuphazamiseka kukazibuthe kanye nezinkinga zesici samandla nazo kufanele zixazululwe.Kuma-LED wamandla aphakathi nendawo naphansi, uhlaka lwesekethe olungcono kakhulu luyisiguquli se-flyback esinesiphelo esisodwa.Kuzinhlelo zokusebenza zamandla aphezulu, amasekhethi okuguqula ibhuloho kufanele asetshenziswe.

Ekushayeleni kwe-LED, inselelo enkulu ukungewona umugqa wesibonisi se-LED.Lokhu kubonakala ikakhulukazi eqinisweni lokuthi i-voltage eya phambili ye-LED izoshintsha ngokwamanje kanye nezinga lokushisa, i-voltage eya phambili yamadivayisi ahlukene e-LED izohluka, "iphoyinti lombala" le-LED lizokhukhuleka namanje kanye nezinga lokushisa, futhi I-LED kufanele ibe ngaphakathi kwezidingo zencazelo.Sebenza ngaphakathi kwebanga ukuze uzuze umsebenzi othembekile.Umsebenzi oyinhloko womshayeli we-LED ukukhawulela okwamanje ngaphansi kwezimo zokusebenza, kungakhathaliseki ukuthi yiziphi izinguquko ezimweni zokufaka kanye ne-voltage eya phambili.

Ngomjikelezo wedrayivu ye-LED, ngaphezu kokuzinza kwamanje okuqhubekayo, kunezinye izidingo ezibalulekile.Isibonelo, uma udinga ukwenza ukufiphalisa kwe-LED, udinga ukunikeza ubuchwepheshe be-PWM, futhi imvamisa ye-PWM evamile yokufiphalisa kwe-LED ngu-1~3kHz.Ukwengeza, amandla okubamba amandla wesekethe yedrayivu ye-LED kumele abe nele, abe namandla, akwazi ukumelana nezimo ezihlukene zamaphutha, futhi kube lula ukuwenza.Kuhle ukukusho lokho ngoba i-LED ihlala isezingeni eliphezulu futhi ngeke ikhukhuleke.

Ekukhetheni izikimu ze-LED display drives, i-inductance boost DC/DC yacatshangelwa esikhathini esidlule.Eminyakeni yamuva nje, okwamanje umshayeli wepompo we-charge angakhipha ukhuphukile kusuka kumakhulu ambalwa mA kuya ku-1.2A.Ngakho-ke, lezi ezimbili Ukukhishwa kohlobo lwe-actuator kuyafana.