9 imyumvire rusange yaUruganda rwa PCBubugenzuzi bwinama yumuzunguruko bwatangijwe kuburyo bukurikira:
1. Birabujijwe rwose gukoresha ibikoresho byipimisha bifatika kugirango ukore kuri TV nzima, amajwi, videwo nibindi bikoresho bya plaque yo hepfo kugirango ugerageze ikibaho cya PCB udafite transformateur wenyine.
Birabujijwe rwose kugerageza mu buryo butaziguye TV, amajwi, videwo n'ibindi bikoresho bidafite imashini ihindura amashanyarazi ifite ibikoresho n'ibikoresho bifite aho bihurira.Nubwo amajwi rusange ya cassette ya radio afite transformateur yingufu, mugihe uhuye nibindi bikoresho byihariye bya TV cyangwa amajwi, cyane cyane ingufu zisohoka cyangwa imiterere yumuriro w'amashanyarazi wakoreshejwe, ugomba kubanza kumenya niba chassis yimashini yishyurwa , bitabaye ibyo bizoroha cyane TV, amajwi nibindi bikoresho byashizwe ku isahani yo hepfo bitera umuzenguruko muto w'amashanyarazi, bigira ingaruka kumuzunguruko uhuriweho, bigatuma ikosa ryiyongera.
2. Witondere imikorere ya insulasiyo yo kugurisha mugihe ugerageza ikibaho cya PCB
Ntabwo byemewe gukoresha icyuma cyo kugurisha kugurisha nimbaraga.Menya neza ko icyuma cyo kugurisha kitishyurwa.Kuramo igishishwa cyicyuma.Witondere umuzunguruko wa MOS.Ni byiza gukoresha icyuma giciriritse cyumuzunguruko wa 6 ~ 8V.
3. Mbere yo kugerageza ikibaho cya PCB, banza usobanukirwe ihame ryakazi ryumuzunguruko hamwe nizunguruka
Mbere yo kugenzura no gusana uruziga rwinjizwamo, ugomba kubanza kumenyera imikorere yumuzunguruko uhuriweho wakoreshejwe, umuzenguruko w'imbere, ibipimo nyamukuru by'amashanyarazi, uruhare rwa buri pin, hamwe na voltage isanzwe ya pin, imiterere yumurongo nakazi. ihame ryumuzunguruko ugizwe nibice bya periferi.Niba ibisabwa haruguru byujujwe, gusesengura no kugenzura bizoroha cyane.
4. Ntugatera uruziga rugufi hagati yipine mugihe ugerageza ikibaho cya PCB
Mugihe upima voltage cyangwa igeragezwa ryumurongo hamwe na oscilloscope probe, ntugateze umuzenguruko mugufi hagati yipine yumuzunguruko uhuriweho bitewe no kunyerera kwipimisha ikizamini cyangwa iperereza, hanyuma upime kumuzingo wacapwe wa peripheri uhujwe neza na pin.Inzira ngufi yigihe gito irashobora kwangiza byoroshye uruziga.Ugomba kwitonda cyane mugihe ugerageza flat-pack ya CMOS ihuriweho.
5. Kurwanya imbere mubikoresho bya test ya PCB bigomba kuba binini
Iyo upimye voltage ya DC ya pin ya IC, hagomba gukoreshwa multimeter ifite imbere imbere yumutwe wa metero irenga 20KΩ / V, bitabaye ibyo hazabaho ikosa rinini ryo gupima kuri voltage ya pin zimwe.
6. Witondere gukwirakwiza ubushyuhe bwumuriro wamashanyarazi mugihe ugerageza ikibaho PCB
Imbaraga zishyizwe hamwe zigomba kugira ubushyuhe bwiza, kandi ntibyemewe gukora mumashanyarazi menshi adafite ubushyuhe.
7. Umugozi wambere wubuyobozi bwa PCB ugomba kugeragezwa neza
Niba ukeneye kongeramo ibice byo hanze kugirango usimbuze ibice byangiritse byumuzunguruko uhuriweho, hagomba gutoranywa uduce duto, kandi insinga zigomba kuba zumvikana kugirango wirinde guhuza parasitike bitari ngombwa, cyane cyane guhuza hagati yimbaraga zamajwi zongerewe imbaraga zumuzunguruko hamwe na preamplifier circuit end .
8. Kugenzura ikibaho cya PCB kugirango harebwe ubuziranenge bwo gusudira
Iyo kugurisha, uwagurishije arashikamye, kandi kwegeranya kugurisha hamwe nu byobo bishobora gutera kugurisha ibinyoma.Igihe cyo kugurisha muri rusange ntabwo kirenze amasegonda 3, kandi imbaraga zicyuma zigurisha zigomba kuba nka 25W hamwe no gushyushya imbere.Inzira yazengurutswe yagurishijwe igomba kugenzurwa neza.Koresha ohmmeter kugirango umenye niba hari umuzunguruko mugufi hagati yipine, wemeze ko ntagurishwa ryabacuruzi, hanyuma ufungure amashanyarazi.
9. Ntugacire urubanza ibyangiritse byumuzunguruko byoroshye mugihe ugeragezaUbuyobozi bwa PCB
Ntugacire urubanza ko umuzunguruko wangiritse wangiritse byoroshye.Kuberako imiyoboro myinshi ihuriweho hamwe ihujwe neza, iyo umuzunguruko udasanzwe, birashobora gutera impinduka nyinshi za voltage, kandi izi mpinduka ntabwo byanze bikunze biterwa no kwangirika kwumuzunguruko.Mubyongeyeho, mubihe bimwe na bimwe, voltage yapimwe ya buri pin itandukanye na voltage isanzwe.Iyo indangagaciro zihuye cyangwa zegeranye, ntishobora guhora yerekana ko uruziga rwuzuye ari rwiza.Kuberako amakosa yoroheje amwe ntabwo azatera impinduka muri voltage ya DC.
Murugo -Ku bijyanye na Hengxinyi -Ikibaho cyumuzunguruko cyerekana -Ibipimo bitunganijwe -Ibicuruzwa bitemba