Fais fab Adapter Conversion Efficiency
Lub hwj chim adapter yog qhov tseem ceeb ntawm kev sib xyaw ua ke ntawm lub tshuab hluav taws xob, lub AC / DC converter, thiab cov khoom siv hluav taws xob sib txuas. Hauv cov ntsiab lus yooj yim, chav tsev sib xyaw ua ke no muaj ob lub ntsiab lus tseem ceeb: transformer thiab tam sim no converter. Ob qho tib si ntawm cov khoom no siv hluav taws xob siv hluav taws xob, thiab lawv cov kev sib txuas ruaj khov tsis muaj qhov tshwj xeeb. Yog li ntawd, lub hwj chim adapter nws tus kheej kuj yog ib lub zog -siv ntaus ntawv.
Lub zog nkag mus rau hauv cov khoom siv hluav taws xob tsis tuaj yeem yog 100% hloov mus rau hauv lub zog siv tau rau ntau yam khoom siv hauv lub party. Qhov no yog qhov teeb meem ntawm conversion efficiency peb tab tom tham hnub no.
Conversion efficiency yog ib qho tseem ceeb qhia rau lub hwj chim adapters. Kev ua haujlwm siab txhais tau hais tias lub adapter nws tus kheej ua rau poob qis dua, ua rau kev txuag hluav taws xob ntau dua. Kev hloov dua siab tshiab ntawm lub hwj chim adapter txhais tau tias yog tag nrho cov zis hluav taws xob muab faib los ntawm tag nrho cov tswv yim fais fab: Fais fab Efficiency η=Po / Pi. Hauv cov qauv no, Po sawv cev rau lub zog tso zis, thiab Pi sawv cev rau lub zog nkag.
Kev sib raug zoo ntawm lub hwj chim adapter qhov hloov dua siab tshiab thiab nws qhov kub thiab txias yuav tsum tau hais txog. Txij li thaum lub adapter nyob rau hauv poob ib tug npaum li cas ntawm lub hwj chim, nws conversion efficiency tsis yog 100%. Lub hwj chim noj los ntawm lub adapter manifests li cua sov. Cov theem ntawm tshav kub generated nyob rau hauv feem ntau ntawm lub adapter conversion efficiency thiab nws lub cev loj. Nyob rau hauv qee qhov cua sov dissipation tej yam kev mob, lub adapter yuav muaj qhov kub thiab txias nce - qhov txawv ntawm nws qhov kub thiab txias ambient. Qhov chaw saum npoo ntawm lub adapter cov ntaub ntawv ncaj qha cuam tshuam qhov kub nce. Kev kwv yees ntxhib tuaj yeem ua tau siv cov qauv no: Kub nce=Thermal Resistance Coefficient × Block Fais Fab Kev Siv. Nyob rau hauv qhov chaw siab tshaj - qhov kub thiab txias, lub adapter yuav tsum tau derated kom txo tau nws lub zog noj, yog li txo qhov kub thiab txias thiab xyuas kom meej tias cov khoom siv sab hauv tsis pub dhau lawv qhov kub siab tshaj qhov txwv. Tshaj li qhov ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv hluav taws xob, qhov kev ua haujlwm kub nce siab cuam tshuam rau lub adapter Lub Sijhawm Nruab Nrab Nruab Nrab (MTBF) thaum tso zis hluav taws xob tas li. Kev ua haujlwm siab thiab qis kub nce ua rau cov khoom lag luam ntev dua, me me, thiab txo qhov hnyav. Qhov kev sib tham ntawm qhov loj me no ua rau peb mus rau lub ntsiab lus ntawm lub zog ceev.
Feem ntau ntawm lub hwj chim adapter manufacturers siv lub zog ceev raws li tus qauv los ntsuas cov khoom ua tau zoo. Lub zog ceev yog feem ntau qhia hauv watts ib cubic nti (W / in³). Yog hais tias lub adapter tsis tuaj yeem siv nyob rau hauv qhov ntsuas qhov siab tshaj plaws ib puag ncig, nws yuav tsis ua tiav lub zog tso zis siab tshaj plaws. Qhov nruab nrab tso zis hluav taws xob muaj yog qhov siv tau lub zog ceev.
Kev siv lub zog ceev yog nyob ntawm cov hauv qab no:
■ A. Yuav tsum muaj lub zog tso zis.Qhov no yog qhov siab tshaj plaws nruab nrab lub zog xav tau los ntawm daim ntawv thov.
■ B. Thermal Impedance.Txhais raws li qhov kub nce los ntawm lub zog dissipation, feem ntau ntsuas hauv℃/ W.
■ C. Qhov ntsuas kub siab tshaj plaws ua haujlwm.Tag nrho cov khoom siv hluav taws xob muaj qhov ntsuas qhov siab tshaj plaws ua haujlwm kub. Qhov no yog hais txog qhov kub siab tshaj plaws ntawm cov khoom siv sab hauv tuaj yeem tiv taus thaum ua haujlwm. Txhawm rau kom muaj kev ntseeg siab, kev ua haujlwm yuav tsum nyob qis dua qhov ntsuas kub no.
■ D. Kev khiav hauj lwm ambient kub.Qhov no yog hais txog qhov phem tshaj - qhov kub ntawm ib puag ncig thaum lub sijhawm ua haujlwm ntawm cov khoom. Yog tias cov khoom siv hluav taws xob tsim hluav taws xob ntau dhau thiab tsis tuaj yeem tawg sai txaus rau qhov nruab nrab ib puag ncig, nws yuav ua tsis tiav vim nws qhov ntsuas kub tau lees paub ntau dua. Yog li ntawd, xaiv lub dab dej kom tsim nyog yog ib qho ntawm cov xwm txheej tseem ceeb rau kev ua haujlwm txhim khu kev qha.
Lub ntsiab tsis xav tau rau thermal tsim ntawm lub hwj chim Cheebtsam yog raws li nram no:
■ 1. Cheebtsam Kev Ua Haujlwm Kub Kub:Qhov siab tshaj plaws uas tso cai rau kev khiav hauj lwm kub txwv rau lub cuab yeej, muab los ntawm cov chaw tsim tshuaj paus los yog yuam los ntawm cov qauv khoom.
■ 2. Cheeb Tsam Fais Fab Dissipation:Qhov nruab nrab ruaj khov- lub xeev lub zog siv los ntawm lub cuab yeej thaum lub sijhawm ua haujlwm, txhais tau tias yog cov khoom ntawm qhov nruab nrab RMS tso zis tam sim no thiab qhov nruab nrab RMS qhov hluav taws xob poob.
■ 3. Fais fab dissipation ntawm cov khoom siv fais fab:yog hais txog lub peev xwm ntawm cov cua sov dissipation ntawm ib qho tshwj xeeb kub dissipation qauv.
■ 4. Thermal Resistance (R):Qhov kub nce toj ib chav tsev ntawm lub zog dissipation thaum tshav kub hloov ntawm cov xov xwm.
