Yintoni a Tube Cathode Ray

Mhlawumbi akukho mntu owayeza kuba ebomini bakhe sijamelene izixhobo, ukuyilwa equka tube cathode ray (okanye CRT). Ngoku izisombululo kunjeya ngenkuthalo zithathelwa indawo kunezixhobo wesimanje ngokusekelwe ulwelo crystal displays (LCD). Nakuba kunjalo, kukho iqela kwiindawo apho umbhobho cathode ray nangoku ufunwayo. Umzekelo, aphezulu-ngqo oscilloscopes LCD ayinakusetyenziswa. Noko ke, enye into icacile - ulwazi lwenkqubela isixhobo ukubonisa ekugqibeleni kukhokelela ukusilela epheleleyo CRT. Le yinto ixesha.

Cathode ray tube: imbali ingenzeka

Le discoverer angazenza Yu Plucker, nto leyo kunyaka 1859, isifundo ukuziphatha zesinyithi ngeziphumo ezahlukeneyo bangaphandle, simanga wafumanisa radiation (amadlozi) ngamasuntswana nezakhiwo - electron. imiqadi yamasuntswana benziwa ngokuba imitha cathode. Yena wasondela Kwakhona ingqalelo ukubonakala ukukhutshwa ebonakalayo kwezinto ezithile (phosphor) e ukunxibelelana nezi iintsika electron. CRT Modern ezinako ukudala umfanekiso ngenxa olufunyanisiweyo ezimbini.

Emva kweminyaka engama-20, kuye kwafunyaniswa empirically ukuba kwicala isindululo electron ekukhutshelwe ungalawuleka esigangeni magnetic lwangaphandle. Oku lula wachaza ukuba sikhumbula ukuba abathwali intlawulo ezimbi luphawulwa uhambisa amasimi Imagnethi yomhlaba kunye zombane.

Ngowe-1895, uKarl F. Braun ukucokisa kulawulo ityhubhu, yaye ngaloo ndlela wakwazi ukutshintsha kumda wesangqa ye kwicala yamasuntswana flow a usentsimini nje le nkqubo, kodwa njengesipili ekhethekileyo na ajikelezwe, leyo wavula amathuba amatsha ngokupheleleyo ukusetyenziswa njengeyabo. Ngowe-1903 godu Venelt ibekwe ngaphakathi electrode ityhubhu cathode ekwimo itankana, eyenza kube lula ukulawula ngobunzulu wobhobhozayo ekhutshwa.

Ngowe-1905, Einstein yaqulunqa inxaki yokubala isivamvo, yaye emva kweminyaka emi-6 kuye kwabonisa usebenzisa isixhobo transfer umfanekiso mgama. Beam ilawulwa yi mhlaba otsalayo, nesigxina capacitor yexabiso ukukhanya.

Ngexesha ekuqaleni yemveliso onobuhle zokuqala ishishini CRT akuzange kube ulungele ukwenza screens kunye idiagonal amakhulu, ngoko njerngeglasi lenses esetyenziswa ukusilela.

Izixhobo cathode ray tube

Ekubeni isixhobo silungisiwe, kodwa utshintsho yendaleko ngokwendalo, njengoko akukho nto ngokwesiseko entsha ikhondo lomsebenzi ziye longeziwe.

umzimba Glass uqala nge ityhubhu ukwandiswa bokwakha screen etsobhileyo. Zizixhobo umfanekiso wombala, umphezulu engaphakathi isale njengenyathelo ethile iintlobo ezintathu phosphors (Red, Green, Blue), enika umbala chweba kwi umqadi electron ongena. Ngako oko, kukho cathode ezintathu (guns). Ukuze ukususa electron defocus nokubonelela nomqadi yangoku oyifunayo nghena neencopho kwiskrini phakathi cathode kunye nenkqubo phosphor maleko nemivalo yesinyithi amalungiselelo - imaski. Oku kungenziwa xa kuthelekiswa kunye istensile, ndazinqumla zonke engeyomfuneko.

Phezu komhlaba eshushu cathode electron engcolisayo iqala. They sukela ukuya anode (electrode nentlawulo positive), uqhagamshele kwinxalenye etsobhileyo tube. Ngaphezu koko, ezinemiqadi ni coil ezizodwa kuwa entsimini kwenkqubo aphambuke. Ehambahamba ukuwa nothango lwaso phezu neencopho kwikhusi, ebangela ukuguqulwa bayo amandla entshukumo abe ukukhanya.

ubuchwepheshe computer

Amagosa okubeka esweni iimviwo kunye cathode-ray ityhubhu ezisetyenziswa kakhulu kwiinkqubo zekhompyutha. I elula yoyilo, ukuthembeka phezulu, umbala echanekileyo, yaye akukho ukulibaziseka (enye impendulo millisecond matrix LCD) - oku inzuzo zazo eziphambili. Kutshanje, Noko ke, njengoko sele kuchaziwe, elo CRT asuswa esweni LCD olunoqoqosho ngakumbi ergonomic.