Ngokwemibiko yabezindaba, uMnyango Wezamandla wase-US (DOE) usanda kukhipha umbiko wawo wesithathu onokwethenjelwa kumadrayivu e-LED asuselwa ekuhlolweni kwempilo okusheshisiwe kwesikhathi eside. Abacwaningi base-US Department of Energy's Solid State Lighting (SSL) bakholelwa ukuthi imiphumela yakamuva iqinisekisa ukuthi indlela ye-Accelerated Stress Testing (AST) ibonise ukusebenza kahle ngaphansi kwezimo ezihlukahlukene ezinzima. Ngaphezu kwalokho, imiphumela yokuhlolwa kanye nezici zokwehluleka ezilinganisiwe zingazisa abathuthukisi babashayeli ngamasu afanelekile ukuze kuthuthukiswe ukwethembeka.
Njengoba kwaziwa, abashayeli be-LED, njengezingxenye ze-LED ngokwabo, babalulekile kwikhwalithi yokukhanya efanelekile. Umklamo ofanelekile womshayeli ungaqeda ukucwayiza futhi unikeze ukukhanya okufanayo. Futhi umshayeli ubuye abe ingxenye okungenzeka kakhulu ukuthi izibani ze-LED noma izinto zokukhanyisa zingasebenzi kahle. Ngemva kokubona ukubaluleka kwabashayeli, i-DOE yaqala iphrojekthi yokuhlola abashayeli yesikhathi eside ngo-2017. Le phrojekthi ihlanganisa abashayeli besiteshi esisodwa kanye namashaneli amaningi, angasetshenziselwa ukulungisa izinto ezifana nemigodi ye-ceiling.
UMnyango Wezamandla wase-US uke wakhipha imibiko emibili ngenqubo yokuhlola nenqubekelaphambili, futhi manje kukhishwa umbiko wesithathu wedatha wokuhlola, ohlanganisa imiphumela yokuhlolwa komkhiqizo osebenza ngaphansi kwezimo ze-AST amahora angu-6000-7500.
Eqinisweni, imboni ayinaso isikhathi esiningi sokuhlola ukushayela ezindaweni ezijwayelekile zokusebenza iminyaka eminingi. Ngokuphambene nalokho, uMnyango Wezamandla wase-US kanye nosonkontileka u-RTI International baye bahlola idrayivu kulokho abakubiza ngokuthi imvelo engu-7575 - enomswakama wasendlini kanye nezinga lokushisa elihlala ligcinwe ku-75 ° C. Lokhu kuhlolwa kuhilela izigaba ezimbili zokuhlolwa komshayeli, ngaphandle kwe- isiteshi. Idizayini yesiteji esisodwa ibiza kancane, kodwa ayinayo isekethe ehlukile eqale iguqule i-AC ibe yi-DC bese ilawula eyamanje, ehlukile ekwakhiweni kwezigaba ezimbili.

Umbiko woMnyango Wezamandla wase-US uthi ezivivinyweni ezenziwa kumadrayivu ahlukene ayi-11, wonke amadrayivu aqhutshwa amahora ayi-1000 endaweni engama-7575. Uma idrayivu itholakala ekamelweni lezemvelo, umthwalo we-LED oxhunywe ku-drive utholakala ngaphansi kwezimo zemvelo zangaphandle, ngakho-ke imvelo ye-AST ithinta kuphela idrayivu. I-DOE ayizange ixhumanise isikhathi sokusebenza ngaphansi kwezimo ze-AST nesikhathi sokusebenza ngaphansi kwezimo ezivamile. Iqoqo lokuqala lamadivayisi lihlulekile ngemuva kokusebenza amahora angu-1250, nakuba amanye amadivaysi asasebenza. Ngemva kokuhlola amahora angu-4800, u-64% wamadivayisi wehlulekile. Noma kunjalo, uma kucatshangelwa isimo sokuhlola esinzima, le miphumela isivele mihle kakhulu.
Abacwaningi bathole ukuthi amaphutha amaningi enzeka esigabeni sokuqala somshayeli, ikakhulukazi ku-power factor correction (PFC) kanye ne-electromagnetic interference (EMI) suppression circuits. Kuzo zombili izigaba zomshayeli, ama-MOSFET nawo anamaphutha. Ngaphezu kokukhombisa izindawo ezifana ne-PFC ne-MOSFET ezingathuthukisa idizayini yabashayeli, le AST iphinde ikhombise ukuthi amaphutha ngokuvamile angabikezelwa ngokusekelwe ekuqapheni ukusebenza komshayeli. Isibonelo, ukuqapha isici samandla kanye namandla okwandayo kungathola amaphutha kusenesikhathi. Ukwenyuka kombani nakho kukhombisa ukuthi ukungasebenzi kahle kuseduze.
Isikhathi eside, uhlelo lwe-SSL lwe-DOE belwenza ukuhlola nokucwaninga okubalulekile emkhakheni we-SSL, okuhlanganisa nesicelo sokuhlolwa komkhiqizo ngaphansi kwephrojekthi ye-Gateway kanye nokuhlolwa kokusebenza komkhiqizo wezohwebo ngaphansi kwephrojekthi ye-Caliper.