I-red test lead lead isekelwe, izikhonkwane kwisangqa esibomvu zizo zonke iindawo, kunye nezibonda ezingalunganga ze-capacitors zonke iindawo.Beka i-black test lead kwi-pin ye-IC ukuba ilinganiswe, kwaye ke i-multimeter iya kubonisa ixabiso le-diode, kwaye igwebe umgangatho we-IC ngokusekelwe kwixabiso le-diode.Liliphi ixabiso elilungileyo?Kuxhomekeke kumava.Nokuba unayo ibhodi yomama kwaye wenze imilinganiselo yothelekiso.
Indlela yokubona ngokukhawuleza iimpazamo
1 Jonga ubume becandelo
Fumana ibhodi yesekethe engalunganga, jonga kuqala ukuba ibhodi yesekethe inomonakalo ocacileyo wecandelo, njengokutshiswa kwe-electrolytic capacitor kunye nokudumba, ukudinwa kwe-resistor, kunye nokutshiswa kwesixhobo samandla.
2 Jonga i-soldering yebhodi yesekethe
Umzekelo, nokuba ibhodi yesekethe eprintiweyo ikhubazekile okanye iphoso;ukuba i-solder joints iyawa okanye ngokucacileyo i-soldered weak;nokuba ulusu lwebhodi yesekethe luphothiwe, lutshiswe kwaye lujike lube mnyama.
3 Iplagi yecandelo loqwalaselo
Ezifana neesekethe ezihlanganisiweyo, iidiode, iiguquli zamandla ebhodi yesekethe, njl.njl. zifakwe ngokuchanekileyo.
4 Ukumelana novavanyo olulula\umthamo\ukuqaliswa
Sebenzisa i-multimeter ukwenza uvavanyo olulula kumacandelo akrokrelwayo afana nokuchasana, i-capacitance, kunye ne-inductance ngaphakathi koluhlu lokuvavanya ukuba ixabiso lokumelana landa, i-capacitor isiphaluka esifutshane, isiphaluka esivulekileyo kunye nokutshintsha kwe-capacitance, i-inductance short circuit kunye ne-circuit evulekile.
5 Uvavanyo lwamandla
Emva kokuqwalaselwa okulula okukhankanywe ngasentla kunye nokuvavanya, iphoso alikwazi ukupheliswa, kwaye uvavanyo lwamandla lunokwenziwa.Uvavanyo lokuqala ukuba unikezelo lwamandla lwebhodi yesekethe luqhelekile.Ngokufana nokuba unikezelo lwamandla e-AC kwibhodi yesekethe aluqhelekanga, nokuba imveliso yolawulo lombane ayiqhelekanga, nokuba imveliso yombane otshintshayo kunye ne-waveform ayiqhelekanga, njl.
6 inkqubo yebrashi
Kumacandelo acwangcisiweyo afana ne-single-chip microcomputer, i-DSP, i-CPLD, njl., unokucinga ngokuxubha inkqubo kwakhona ukuphelisa ukusilela kwesekethe okubangelwa kukusebenza kwenkqubo engaqhelekanga.
Uzilungisa njani iibhodi zeesekethe?
1 Ukuqwalaselwa
Le ndlela ilula kakhulu.Ngokuqwalasela ngenyameko, sinokubona ngokucacileyo imikhondo etshileyo.Xa le ngxaki isenzeka, kufuneka sinikele ingqalelo kwimigaqo ngexesha lokugcinwa nokuhlolwa ukuze siqinisekise ukuba akukho nzakeleyo imbi ngakumbi xa umbane uvuliwe.Xa sisebenzisa le ndlela, kufuneka sinikele ingqalelo kule miba ilandelayo:
1. Jonga ukuba ibhodi yesekethe yonakele na ngumntu.
2. Qaphela ngokucophelela amacandelo ahambelanayo ebhodi yesekethe, kwaye uqaphele yonke i-capacitor kunye nokuchasana ukuze ubone ukuba akukho mnyama.Ekubeni ukuchasana akunakujongwa, kunokulinganiswa kuphela ngesixhobo.Amalungu amabi anxulumeneyo kufuneka atshintshwe ngexesha.
3.Ukuqwalaselwa kweesekethe ezidibeneyo zebhodi yeesekethe, ezifana ne-CPU, i-AD kunye nezinye ii-chips ezinxulumene nazo, kufuneka zitshintshwe ngexesha xa ziqwalasela iimeko ezihambelanayo ezifana ne-bulging kunye nokutshisa.
Unobangela wezi ngxaki zingasentla usenokuba kungokunje.Ukugqithiswa kwangoku kunokubangela ukutshiswa, ngoko jonga umzobo wesiphaluka ofanelekileyo ukuze ubone apho ingxaki ikhona.
2. Umlinganiselo omileyo
Ekulungisweni kwebhodi yesekethe, kudla ngokuba nzima ukufumana ezinye iingxaki ngendlela yokujonga, ngaphandle kokuba kucacile ukuba itshiswe okanye ikhubazekile.Kodwa uninzi lweengxaki zisafuna ukulinganiswa nge-voltmeter ngaphambi kokuba kuthathwe izigqibo.Amacandelo ebhodi yesekethe kunye neenxalenye ezinxulumeneyo kufuneka zivavanywe nganye nganye.Inkqubo yokulungisa kufuneka iqhutywe ngokwenkqubo elandelayo.
Khangela isiphaluka esifutshane phakathi kokunikezelwa kwamandla kunye nomhlaba kwaye ukhangele isizathu.
Khangela ukuba i-diode iyinto eqhelekileyo.
Khangela ukuba kukho isiphaluka esifutshane okanye isekethe evulekileyo kwi-capacitor.
Jonga ibhodi yesekethe enxulumene neesekethe ezidibeneyo ezidibeneyo, kunye nokumelana kunye nezinye iimpawu ezinxulumene nesixhobo.
Singasebenzisa indlela yokujonga kunye nendlela yokulinganisa i-static ukusombulula uninzi lweengxaki ekugcinweni kwebhodi yesekethe.Oku akuthandabuzeki, kodwa kufuneka siqinisekise ukuba unikezelo lwamandla luqhelekileyo ngexesha lokulinganisa kwaye akukho monakalo wesibini onokwenzeka.
3 Umlinganiselo we-Intanethi
Indlela yokulinganisa i-intanethi isoloko isetyenziswa ngabavelisi.Kuyimfuneko ukwakha iqonga lokulungisa iiphene kunye nokugcinwa kwalo ukuze kube lula ukugcinwa.Xa ulinganisa ngale ndlela, kufuneka ulandele la manyathelo angezantsi.
Amandla kwibhodi yesekethe kwaye khangela ukuba amacandelo ashushu.Ukuba kunjalo, yijonge kwaye ubuyisele amacandelo anxulumeneyo.
Khangela isekethe yesango ehambelana nebhodi yesiphaluka, jonga ukuba kukho ingxaki ngengqiqo, kwaye unqume ukuba i-chip ilungile okanye imbi.
Vavanya ukuba ngaba imveliso ye-crystal oscillator yesekethe yedijithali iqhelekile.
Indlela yokulinganisa i-intanethi isetyenziswa ikakhulu ukuthelekisa iibhodi ezimbini zeesekethe ezilungileyo nezimbi.Ngokuthelekisa, ingxaki ifunyenwe, ingxaki ixazululwe, kwaye ukulungiswa kwebhodi yesiphaluka kugqityiwe.