Ikhebula le-VGA
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I-Amewire Ikhwalithi Enhle Intengo Eshibhile 3+2 VGA I-VGA Ejwayelekile Yesilisa ukuya ku-VGA Male Cable
Izixhumi ze-VGA ezijwayelekile ezingu-15-Pin
Ikhebula elijwayelekile le-VGA lamaphini angu-15 kube yinketho yokuxhuma iziqapha, ama-HDTV, noma izihlukanisi zevidiyo kuma-PC ukuze zisetshenziswe ekhaya nasemsebenzini. Ihambisana kabanzi futhi ibilokhu iyisisekelo embonini iminyaka eminingi, inikezela ngoxhumano oluthembekile lokudlulisa amasiginali wevidiyo ye-analog. Nakuba izixhumanisi ezintsha zedijithali ezifana ne-HDMI ne-DisplayPort sezivame kakhulu, izintambo ze-VGA zisasetshenziswa ngokuvamile, ikakhulukazi ngezinto ezindala noma ezimeni lapho ukuhambisana nemishini yefa kuyadingeka.
Ukuvikela Okuthathu
Ikhebula le-VGA, isixhumanisi esibalulekile phakathi kwamamonitha namakhompyutha, iziqhayisa ngokubukeka okuhlukile okulotshwe ukwakhiwa kwayo okuqinile kanye nesakhiwo esisebenzayo. Yakhelwe ukubekezelela izimfuno zokusetshenziswa okuvamile, ifomu layo liwusizo njengoba libonakala.
Emaphethelweni awo kukhona izixhumi eziyizimpawu ezingu-15, eziyisithonjana ngombala wazo oluhlaza okwesibhakabhaka futhi zinenjongo ngesakhiwo sazo. Lezi zixhumi, ezivame ukugqitshwa nge-nickel ukuze ziqine futhi zimelane nokugqwala, ziveza i-metallic sheen, zengeza ukuthinta kobuhle bemboni ekusebenzeni kwazo. Ukuphonswa kwe-nickel okunombala osiliva akugcini nje ngokuboleka ubuhle obupholishiwe kodwa futhi kuqinisekisa impilo ende ebusweni bokuguga.
Ifakwe ngaphakathi kwejakhethi eqinile kodwa eguquguqukayo, ngokuvamile eyenziwe nge-PVC, umgogodla wekhebula uvikelekile ekuphazamisekeni kwangaphandle nokucindezeleka kwemvelo. Nakuba umbala webhantshi ungase uhluke—amathunzi avamile ahlanganisa okumnyama noma okumpunga—isebenza njengesivikelo esivikelayo, evikela izintambo ezithambile kanye nokuvikela ngaphakathi.
Ubuhlalu beFerrite
Izintambo ze-VGA ezinamakhanda ane-nickel-plated zinikeza ukuqina okuthuthukisiwe kanye nokumelana nokugqwala ngenxa ye-nickel plating, enikeza ungqimba oluyisivikelo ezintweni ezithinta imvelo nokuguga ngokuhamba kwesikhathi.Indandatho kazibuthe, evame ukutholakala ihlanganiswe nezintambo ze-VGA, yenza umsebenzi obalulekile ekugcineni isignali. ubuqotho ngesikhathi sokudlulisela. Isebenza njengesihlungi se-passive, iqondise futhi icindezele i-high-frequency electromagnetic interference (EMI) kanye ne-radio-frequency interference (RFI) engase idicilele phansi ikhwalithi yesiginali ye-VGA. Ngokunciphisa umsindo ongadingeki nama-harmonics, iringi kazibuthe isiza ukuqinisekisa isignali ehlanzekile nezinzile, ikakhulukazi ezindaweni lapho ukuphazamiseka kukazibuthe kagesi kuvame khona.
Ukuvikela Okuthathu
Ukuvikela kathathu isici esitholakala kwezinye izintambo, okuhlanganisa izintambo ze-VGA, okuhloswe ngazo ukunciphisa ukuphazamiseka kwerediyo-frequency (RFI) kanye nokuphazanyiswa kwe-electromagnetic (EMI). Lesi sivikelo siqukethe izendlalelo eziningi zezinto ezivikelayo ezizungeze izikhondakta zekhebula, ngokuvamile ezenziwe ngethusi noma nge-aluminium, isendlalelo ngasinye esingeza umgoqo owengeziwe ngokumelene nokuphazamiseka kwangaphandle.
Ngokuvikeleka okuphindwe kathathu, ikhebula linikeza isivikelo esithuthukisiwe ngokumelene ne-RFI ne-EMI, iqinisekisa ukuthi isignali ihlala iqinile futhi ingaphazanyiswa ngisho nokugijima amakhebula amade. Lokhu kubaluleke kakhulu ezindaweni lapho kungase kube khona izinto eziningi zikagesi ezikhipha imisebe ye-electromagnetic, engase ithuntubeze ikhwalithi yesiginali edluliswa ngentambo.
