Ibhodi le-PCB liwumgogodla wanoma iyiphi idivayisi ye-elekthronikhi, inkundla okugxunyekwe kuyo izingxenye zikagesi. Nokho, naphezu kokubaluleka kwawo, lawa mabhodi awavikelekile ekuhlulekeni noma ekushiyekeni. Kungakho kubalulekile ukufunda ukuthi ungavivinya kanjani ngempumelelo amabhodi e-PCB nge-multimeter. Kule bhulogi, sizohlola inqubo yesinyathelo nesinyathelo yokuhlola ibhodi le-PCB ukuze kuqinisekiswe ukusebenza kwalo okuphelele nokuhlonza izinkinga ezingaba khona.
Funda mayelana nama-multimeters:
Ngaphambi kokungena enqubweni yokuhlola, kubalulekile ukujwayelana nemishini esizoyisebenzisa - i-multimeter. I-multimeter iyithuluzi le-elekthronikhi elikala izici ezihlukene zikagesi ezifana ne-voltage, yamanje, nokuqhubeka. Iqukethe izingxenye ezihlukahlukene ezihlanganisa isibonisi, ukudayela okukhethiwe, izimbobo kanye nama-probe.
Isinyathelo 1: Lungiselela ukuhlolwa
Qala ngokuthola i-multimeter esebenzayo futhi uzijwayeze ngemisebenzi yayo nezilungiselelo. Qiniseka ukuthi ibhodi le-PCB linqanyuliwe kunoma yimuphi umthombo wamandla ukuze ugweme ukulimala okungenzeka noma ukulimala. Khomba amaphuzu ahlukene ozowahlola ebhodini futhi uqiniseke ukuthi ayafinyeleleka.
Isinyathelo sesibili: Hlola i-Voltage
Ukuze uhlole i-voltage ebhodini le-PCB, sicela usethe i-multimeter ibe yimodi ye-voltage bese ukhetha ibanga elifanele ngokuya nge-voltage elindelekile. Xhuma i-probe emnyama embobeni evamile (COM) kanye nophenyo olubomvu embobeni kagesi (V). Thinta i-probe ebomvu kutheminali ephozithivu ye-PCB kanye nophenyo olumnyama oluya kutheminali yaphansi ukuze uqale ukuhlola i-voltage. Qaphela ukufundwa bese uphinda inqubo ukuze uthole amanye amaphuzu afanelekile ebhodini.
Isinyathelo sesi-3: Ukuqhubeka Kokuhlola
Ukuhlola ukuqhubeka kubalulekile ukuze kuqinisekiswe ukuthi awekho ama-opens noma izikhindi ezikhona ku-PCB. Setha i-multimeter kumodi yokuqhubeka ngokushintsha ukudayela kwesikhethi ngendlela efanele. Xhuma i-probe emnyama embobeni ye-COM kanye ne-probe ebomvu embobeni yokuqhubeka ezinikele ku-multimeter. Thinta ama-probe ndawonye futhi uqiniseke ukuthi uzwa ibhiphu ukuze uqinisekise ukuqhubeka. Bese, thinta uphenyo uye endaweni oyifunayo ku-PCB bese ulalela ibhiphu. Uma kungekho msindo, kunesekhethi evulekile, ekhombisa ukuxhumana okungalungile.
Isinyathelo Sesine: Hlola Ukumelana
Ukuhlola ukumelana nokuhlola kusiza ukuhlonza noma yikuphi okudidayo noma umonakalo ezingxenyeni zesekethe ebhodini le-PCB. Setha i-multimeter kumodi yokumelana (uhlamvu lwe-omega uphawu lwesiGreki). Xhuma i-probe emnyama embobeni ye-COM kanye ne-probe ebomvu embobeni yokumelana. Thinta ama-probe ndawonye futhi ubheke ukufundwa kokumelana. Bese, thinta ama-probe kumaphuzu ahlukahlukene ebhodini bese uqhathanisa okufundwayo. Uma ukufundwa kuchezuka kakhulu noma kukhombisa ukumelana okungapheli, kukhombisa inkinga engaba khona ngesekethe ye-PCB.
Ukuhlola ibhodi le-PCB nge-multimeter kuyisinyathelo esibalulekile ekuqinisekiseni ukusebenza kwalo nokwethembeka. Ngokulandela inqubo yesinyathelo ngesinyathelo echazwe kulo mhlahlandlela, ungakwazi ukuhlola kahle amandla kagesi, ukuqhubeka, nokumelana ebhodini lesekethe. Khumbula ukuthi i-multimeter iyithuluzi lemisebenzi eminingi, futhi ukuqonda ukusebenza kwayo kubalulekile ekuhloleni okunembile. Uhlome ngalawa makhono, ungakwazi ukuxazulula izinkinga ngokuzethemba futhi wenze ukulungisa okudingekayo ukuze uqinisekise ukusebenza kahle kwebhodi lakho le-PCB.
Isikhathi sokuthumela: Sep-06-2023