CRT-saka idanu: bayanin, abubuwa na asali na na'urar

Crt-duba - a na'urar, wanda dogara ne a kan wani cathode ray tube. Wannan fasaha ya sake dawowa a 1897 da masanin kimiyyar Jamus F. Brown. Da farko, an halicce ta a matsayin kayan aiki na musamman wanda aka tsara don aunawa na yanzu (oscilloscope).

CRT-saka idanu da kuma gini

Babban nau'i na irin wannan na'urar shi ne kinescope. Ya ƙunshi gilashi mai nauyin gilashi, wanda daga bisani aka cire iska (watau, a ciki a ciki). Ɗaya daga cikin ƙarshen bututu ne mai laushi da fadi - wannan allon, kuma ɗayan - dogon da kunkuntar - shine wuyansa. A gefen gaba na tube daga ciki an rufe shi da nau'in phosphor (bisa yttrium da erbium). A gaba kashi ne a Crt-duba electron gun, daga wanda karkashin mataki na cikin electrostatic filin bar kwarara daga electrons, game da shi, wani image ya bayyana a allon. Elementary barbashi wuce, ta hanyar da karfe grille da kuma buga ciki na gilashi allo mai rufi da phosphor dige na launi daban-daban. Tsarin tsari na musamman yana tabbatar da ƙwaƙwalwar katako a filin allo. Shirye-shiryen bambance-bambance na nau'i biyu: sadaukarwa da toroidal. Wannan tsarin yana kunshe da masu sanyawa a bakin bakin kinescope.

Maganin gaba da ke bayyana maƙilar CRT ita ce layin zane da layi. Wannan kumburi shine babban maɓallin tsangwama a cikin tashar mitar aiki. Ƙarfin da waɗannan ƙananan suke cinye shi ne ɗaya daga cikin muhimman abubuwan da za a yi la'akari a yayin tsara zane-zane na CRT. Hanya na gaba na zane shi ne ƙarfin modulator, wadda, tare da tsarin haɓakawa, yana aiki akan ka'idar m. Dangane da waɗannan nau'ikan, ƙananan lantarki sun karbi makamashi, wanda ɓangare na cinye shi ne ta luminescence na phosphor.

Fasahar RGB

Yawancin lokaci mai saka idanu na CRT ya ƙunshi bindigogi guda uku, da kuma guda ɗaya. Wadannan dace gun farko launuka: kore, ja da blue. Haɗarsu suna iya ƙirƙirar inuwa da launuka marasa iyaka. Don sarrafa kyamaran rayuka yana buƙatar sarrafa kayan lantarki, wanda ke ƙayyade ingancin saka idanu. Ya bambanci cikin ingancin kayan lantarki da masana'antun daban-daban suka halitta, shine ma'auni da ke nuna bambanci tsakanin masu amfani da CRT, duk da cewa gas ɗin cathode-ray a cikinsu yana da iri ɗaya. Saboda haka, kowannensu bindigogi yana fitowa da wani tasirin da ke rinjayar matakan phosphor na launi daban-daban. Gilashin wutar lantarki na launi daya ya kamata ya shafi abubuwa da launi. Don cimma wannan aikin katako, amfani da kariya na musamman, tsari wanda ya dogara da irin kinescope.

Gyara na CRT-masu saka idanu

Babban magungunan na'urori na CRT sune cin zarafin wutar lantarki. Yawancin lokaci wannan shi ne saboda karuwar wutar lantarki a cibiyar sadarwa. Idan wutar lantarki ta kasa, to, raguwa tare da sauran na'urori, alal misali, launin launi da zubar da ciki, rikice-rikice na hoto, yana faruwa. Bugu da ƙari, hawan iko, ƙananan lalacewar saka idanu suna da lalacewa na zamani (tasirin), haskakawa ga mabuɗan radiation na lantarki, ƙurar ƙira, overheating, tsufa na abubuwa. Rashin zalunci na tsarin zafin jiki na iya haifar da gazawar siginar bidiyo na sarrafawa da tsarin tsarin. Dalili akan layi na layi shine saboda rashin lafiya a cikin matakan lantarki da kuma TDKS. Ɗaya daga cikin dalilai na wannan abu shine turɓaya.