Ukusuka kwi-PCB World.

Nokuba yibhodi eyenziwe ngomnye umntu okanye ibhodi yePCB eyenzelwe kwaye yenziwe nguwe, into yokuqala ukuyifumana kukujonga ingqibelelo yebhodi, njengokuthambisa, ukuqhekeka, iisekethe ezimfutshane, iisekethe ezivulekileyo, kunye nokugrumba.Ukuba ibhodi iyasebenza ngakumbi Yiba ngqongqo, ngoko unokujonga ixabiso lokumelana phakathi kokunikezelwa kwamandla kunye nocingo lomhlaba ngendlela.

Kwiimeko eziqhelekileyo, ibhodi eyenziwe ngokwayo iya kufaka amacandelo emva kokuba i-tinning igqityiwe, kwaye ukuba abantu bayayenza, yibhodi ye-PCB engenanto enemingxuma.Kufuneka uzifakele amacandelo xa uyifumana..

Abanye abantu banolwazi oluthe kratya malunga neebhodi zePCB abaziyilayo, ngoko bathanda ukuvavanya onke amacandelo ngaxeshanye.Enyanisweni, kungcono ukwenza kancinci kancinci.

PCB ibhodi yesekethe phantsi debugging
Ibhodi entsha yePCB debugging inokuqala ukusuka kwindawo yonikezelo lwamandla.Indlela ekhuselekileyo kukubeka i-fuse kwaye emva koko udibanise unikezelo lwamandla (nje ukuba kunjalo, kungcono ukusebenzisa umbane ozinzile).

Sebenzisa unikezelo lwamandla oluzinzileyo ukuseta ukhuseleko lwangoku, uze unyuse kancinci umbane wobonelelo lwamandla oluzinzileyo.Le nkqubo idinga ukubeka iliso kwi-input current, i-input voltage kunye ne-output voltage yebhodi.

Xa i-voltage ihlengahlengiswa phezulu, akukho khuseleko lwangoku kwaye i-voltage ephumayo iyinto eqhelekileyo, ngoko kuthetha ukuba inxalenye yombane webhodi ayinayo ingxaki.Ukuba i-voltage ephumayo eqhelekileyo okanye ukhuseleko lwangoku lugqithisiwe, ngoko ke imbangela yephutha kufuneka iphandwe.

Ufakelo lwecandelo lebhodi yesekethe
Kancinane faka iimodyuli ngexesha lenkqubo yokulungisa iimpazamo.Xa imodyuli nganye okanye iimodyuli ezininzi zifakiwe, landela la manyathelo angasentla ukuvavanya, oko kunceda ukuphepha ezinye iimpazamo ezifihlakeleyo ekuqaleni koyilo, okanye iimpazamo zofakelo lwamacandelo, ezinokukhokelela ekutshiseni okugqithisileyo.Amalungu amabi.

Ukuba ukusilela kwenzeka ngexesha lofakelo, ezi ndlela zilandelayo ziqhele ukusetyenziswa ukusombulula ingxaki:

Indlela yokuqala yokulungisa ingxaki: indlela yokulinganisa amandla ombane.

Xa ukhuseleko lwangoku lusenzeka, musa ukungxama ukuqhawula amacandelo, qinisekisa kuqala amandla ombane wepin ye-chip nganye ukuze ubone ukuba ikuluhlu oluqhelekileyo.Emva koko khangela i-voltage yereferensi, i-voltage yokusebenza, njl.

Ngokomzekelo, xa i-silicon transistor ivuliwe, i-voltage ye-BE junction iya kuba malunga ne-0.7V, kwaye i-junction ye-CE iya kuba yi-0.3V okanye ngaphantsi.

Xa kuhlolwa, kufunyenwe ukuba i-BE junction voltage iphezulu kune-0.7V (i-transistors ekhethekileyo efana ne-Darlington ayibandakanywanga), ngoko ke kunokwenzeka ukuba i-BE junction ivuliwe.Ngokulandelelana, khangela i-voltage kwindawo nganye ukuphelisa impazamo.

Indlela yesibini yokulungisa ingxaki: indlela yokutofa umqondiso

Indlela yokutofa umqondiso inzima kakhulu kunokulinganisa umbane.Xa umthombo wesignali uthunyelwa kwi-terminal yokufaka, kufuneka silinganise i-waveform yenqaku ngalinye ngokulandelelana ukuze sifumane indawo yempazamo kwi-waveform.

Ewe kunjalo, ungasebenzisa i-tweezers ukubona i-terminal yokufaka.Indlela yokuchukumisa i-terminal yegalelo nge-tweezers, kwaye emva koko ujonge impendulo ye-terminal yegalelo.Ngokuqhelekileyo, le ndlela isetyenziswe kwimeko yeesekethe zomsindo kunye nevidiyo ye-amplifier (inqaku: isiphaluka somgangatho oshushu kunye nesiphaluka esiphezulu sombane) Ungasebenzisi le ndlela, ixhomekeke kwiingozi zokutshatyalaliswa kombane).

Le ndlela ibona ukuba isigaba sangaphambili siqhelekile kwaye isigaba esilandelayo siphendula, ngoko ke iphoso alikho kwinqanaba elilandelayo, kodwa kwinqanaba langaphambili.

Indlela yesithathu yokulungisa ingxaki: enye

Ezi zimbini zingasentla ziindlela ezilula nezithe ngqo.Ukongezelela, umzekelo, ukubona, ukujoja, ukuphulaphula, ukuphatha, njl., okuhlala kuthiwa, ziinjineli ezifuna amava athile ukuze zikwazi ukubona iingxaki.

Ngokuqhelekileyo, "jonga" kungekhona ukujonga imeko yezixhobo zokuvavanya, kodwa ukubona ukuba ukubonakala kwamacandelo kuphelile;"ukunuka" ikakhulu kubhekiselele ekubeni ivumba lamalungu aliqhelekanga, njengevumba lokutsha, i-electrolyte, njl njl.

Kwaye "ukuphulaphula" ikakhulu ukuphulaphula ukuba isandi sebhodi siqhelekile phantsi kweemeko zokusebenza;malunga "nokuchukumisa", akukona ukuchukumisa ukuba iinqununu zikhululekile, kodwa ukuziva ukuba ukushisa kwamacandelo kuqhelekileyo ngesandla, umzekelo, kufuneka kubanda phantsi kweemeko zokusebenza.Amalungu ashushu, kodwa amacandelo ashushu abanda ngendlela engaqhelekanga.Musa ukuyicoca ngezandla zakho ngokuthe ngqo ngexesha lenkqubo yokuchukumisa ukukhusela isandla ekutshisweni kobushushu obuphezulu.