CRT-polojekiti: kufotokoza, zinthu zazikulu chipangizo

CRT-polojekiti - chipangizo, ozikidwa pa munthu cathode ray chubu. Njira imeneyi anayamba kupanga mu 1897 ndi German wasayansi F. Brown. Poyamba iwo unalengedwa monga chida apadera anaikira kuyeza alternating zikusinthira (oscilloscope).

CRT-polojekiti ndi kamangidwe kake

The n'chofunika kwambiri pa chipangizo ichi ndi kinescope. Amakhala ndi hermetically losindikizidwa galasi chubu imene mpweya kuchotsedwa (i.e., zingalowe m'malo mkati). kumalekezero a chubu ndi athyathyathya ndipo m'lifupi - ndi nsalu yotchinga, ndi zina - yaitali ndi yopapatiza - ndi khosi. Mbali yakutsogolo kwa mkati mwa chubu TACHIMATA ndi phosphor zikuchokera (zochokera yttrium ndi erbium). Amafotokozera chotsatira ndi CRT-polojekiti elekitironi mfuti, kumene pansi zochita za m'munda electrostatic masamba otaya ma elekitironi, potero fano limapezeka pa zenera. particles pulayimale kudutsa grille zitsulo ndi kumumenya mkati mwa chophimba galasi TACHIMATA ndi phosphor madontho a mitundu yosiyanasiyana. Special dongosolo kuchimwa imapereka kugunda zogwirizana mtanda pa munda chophimba. Deflecting machitidwe ndi mitundu iwiri: chishalo ndi toroidal. dongosolo imakhala inductors, anaika mu khosi kinescope lapansi.

mchitidwe wotsatira liwulo CRT-polojekiti, chimango chipika ndi mzere chindodo. mfundo izi ndi ndiwo phokoso mu opaleshoni pafupipafupi osiyanasiyana. mphamvu yochuluka mfundo izi - chimodzi mwa zinthu zazikulu zimene ayenera kuganizira kupanga CRT polojekiti. Munthu wina ndi mphamvu modulator, amene pamodzi ndi dongosolo mofulumira ntchito pa mfundo za kusiyana angathe. Chifukwa mfundo izi ma elekitironi kupeza mphamvu, limene mbali timathera luminescence wa phosphor lapansi.

RGB-luso

Kawirikawiri mtundu CRT-polojekiti lili mfuti elekitironi atatu, ndi monochrome - wina. Izi zizigwirizana mfuti chachikulu mitundu: wobiriwira, wofiira ndi wabuluu. kuphatikiza awo angalenge nambala wopandamalire wa mumthunzi ndi mitundu. Kulamulira CRT chofunika ulamuliro zamagetsi, amene amasankha khalidwe la polojekiti lapansi. Kusiyana monga zamagetsi, umatulutsa opanga zosiyanasiyana, ndi chodziŵira kusiyana CRT-oyang'anira, ngakhale kuti cathode ray chubu mwa iwo ali yemweyo. Motero, aliyense mfuti limatulutsa mtsinje umene umachititsa kufika mumtundu phosphor. The elekitironi mtengo wa mtundu umodzi Pasakhale bwanji zinthu za mtundu womwewo. Kukwaniritsa ndendende izi mtengo kanthu ntchito chigoba wapadera, dongosolo limene zimatengera mtundu wa chithunzi chubu.

Kukonza CRT-oyang'anira

Mfundo zikuluzikulu malfunctions CRT-chipangizo ndi magetsi wonongeka. Nthawi zambiri izi chifukwa kukakhala mphamvu. Ngati chikakusowani ya magetsi, ndiye ayenera kulankhula ndi kuwonongeka motsatana ndi zigawo zina, mwachitsanzo, kuphwanya mtundu, fano kupotozedwa. Komanso kukakhala, amachititsa kulephera kwa oyang'anira ndi zambiri umakaniko kuonongeka (kunyanyala) zotsatira za magwero cheza atomu, fumbi polojekiti kutenthedwa, okalamba maselo. Violation kutentha kungachititse kuti kulephera kwa kanema chizindikiro gulu processing ndi dongosolo la kulingalira. Violation yopingasa chindodo Mwachangu ndi chifukwa anathetsa madera mkulu voteji ndi TDKS. Chimodzi mwa zifukwa zimene zatchulidwa chodabwitsa waima fumbi.