Malinga ndi malipoti atolankhani, US department of Energy (DOE) posachedwapa yatulutsa lipoti lake lachitatu lodalirika pamayendedwe a LED kutengera kuyesa kwanthawi yayitali kwa moyo. Ofufuza ku US Department of Energy's Solid State Lighting (SSL) akukhulupirira kuti zotsatira zaposachedwa zimatsimikizira kuti njira ya Accelerated Stress Testing (AST) yasonyeza ntchito yabwino pansi pa zovuta zosiyanasiyana. Kuphatikiza apo, zotsatira za mayeso ndi zolephera zoyezera zimatha kudziwitsa opanga madalaivala njira zoyenera kuti apititse patsogolo kudalirika.
Monga zimadziwika bwino, madalaivala a LED, monga zida za LED okha, ndizofunikira kuti kuwala kwabwino kwambiri. Kupanga koyenera kwa dalaivala kumatha kuthetsa kuthwanima ndikupereka kuyatsa kofanana. Ndipo dalaivala ndiyenso gawo lofunikira kwambiri pamagetsi a LED kapena zida zowunikira kuti zisagwire ntchito. Pambuyo pozindikira kufunikira kwa madalaivala, DOE inayamba ntchito yoyesera madalaivala kwa nthawi yaitali mu 2017. Ntchitoyi imaphatikizapo njira imodzi ndi madalaivala amtundu wambiri, omwe angagwiritsidwe ntchito pokonza zipangizo monga matabwa a denga.
Dipatimenti ya Zamagetsi ku US idatulutsa kale malipoti awiri okhudza kuyesa ndi kupita patsogolo, ndipo tsopano lipoti lachitatu la data loyesa likutulutsidwa, lomwe limafotokoza zotsatira za mayeso azinthu zomwe zikuyenda pansi pa AST kwa maola 6000-7500.
M'malo mwake, makampaniwa alibe nthawi yochuluka yoyesa ma drive m'malo ogwirira ntchito bwino kwa zaka zambiri. M'malo mwake, US Department of Energy ndi makontrakitala ake a RTI International ayesa kuyendetsa komwe amatcha 7575 chilengedwe - ndi chinyezi chamkati ndi kutentha kosasinthika pa 75 ° C. njira. Mapangidwe a siteji imodzi amawononga ndalama zochepa, koma alibe dera losiyana lomwe limatembenuza AC kukhala DC kenako ndikuwongolera zamakono, zomwe zimakhala zosiyana ndi mapangidwe a magawo awiri.

Lipoti la Unduna wa Zamagetsi ku US likuti pamayeso omwe adachitika pama drive 11 osiyanasiyana, ma drive onse adayendetsedwa kwa maola 1000 m'malo 7575. Kuyendetsa kukakhala m'chipinda cha chilengedwe, katundu wa LED wolumikizidwa ndi galimotoyo amakhala pansi pa chilengedwe chakunja, kotero kuti chilengedwe cha AST chimangokhudza kuyendetsa. DOE sinalumikizanitse nthawi yoyendetsera pansi pamikhalidwe ya AST ndi nthawi yothamangira pansi pamikhalidwe yabwinobwino. Gulu loyamba la zida zinalephera pambuyo pa maola 1250, ngakhale zida zina zikugwirabe ntchito. Pambuyo poyesa maola 4800, 64% ya zipangizo zinalephera. Komabe, poganizira malo oyeserera movutirapo, zotsatirazi ndizabwino kwambiri.
Ofufuza apeza kuti zolakwika zambiri zimachitika mu gawo loyamba la dalaivala, makamaka pamagetsi owongolera mphamvu (PFC) ndi ma electromagnetic interference (EMI) kupondereza mabwalo. M'magawo onse awiri a dalaivala, ma MOSFET alinso ndi zolakwika. Kuphatikiza pakuwonetsa madera monga PFC ndi MOSFET omwe amatha kukonza kamangidwe ka madalaivala, AST iyi ikuwonetsanso kuti zolakwika zimatha kuneneratu potengera momwe madalaivala amagwirira ntchito. Mwachitsanzo, kuyan'anila mphamvu yamagetsi ndi ma surge current kumatha kuzindikira zolakwika pasadakhale. Kuwonjezeka kwa kung'anima kumasonyezanso kuti vuto layandikira.
Kwa nthawi yayitali, pulogalamu ya SSL ya DOE yakhala ikuchita kuyezetsa ndi kufufuza kofunikira m'munda wa SSL, kuphatikiza kuyesa kwazinthu zoyeserera pansi pa projekiti ya Gateway ndikuyesa magwiridwe antchito amalonda pansi pa polojekiti ya Caliper.