Yuav ua li cas yog ib CRT saib

Cas tsis paub yog lub sij hawm thaum lub rhawv yuav luag tag zoo TVs thiab saib raws li nyob rau hauv cathode-ray technology. Cov txheejtxheem, cov no yog cov cumbersome pab kiag li lawm uas nyob yuav luag ib nrab ntawm lub computer lub rooj. Nws yog tam sim no lub thickness tsuj tsawg tshaj 10 cm, thiab ces nrog cov illumination teeb. Tsis ceeb, ntau kaj siab lug tsis nco qab lawm yog dab tsi ib tug CRT saib. Tab sis yuav tsis muaj avail! Txawm tias, yog hais tias tsuas vim hais tias nws yog ua ntej ntawm txawm qhov tseeb kua-siv lead ua counterparts nyob rau hauv ib co respects.

Yuav ua li cas yog CRT saib

Ua ntej ntawm tag nrho cov, cia deciphering abbreviations. Yog li, lub sij hawm "CRT" yog hais txog electron nqaj los yog, raws li peb taw tes qhia tawm ua ntej lawm, tus cathode raj (los ntawm cov lus Askiv CRT -. Cathode Ray-Tube). Feem ntau, thaum lo lus "raj" feem ntau cov tib neeg muaj lub tog raj kheej, qhov xaus ntawm uas yog tsis muaj phab ntsa. Sib nrug los ntawm lub fact tias xws li ib tug CRT saib, nws yog tsim nyog los hais tias nyob rau hauv cov ntaub ntawv no xws li ib tug sawv cev yog cuav. Vim hais tias tus duab ntawm lub raj nyob rau hauv nws yog nyob deb ntawm cov cylindrical dav hlau thiab ncua mus rau ib sab. Qhov no nto nruab nrab yog cov feem ntawm lub hauv pem hauv ntej iav, ib tug nyob rau hauv uas dluab yog tsim. Lub sab hauv sab ntawm no feem coated nrog ib tug tshwj xeeb cov khoom siv - phosphor. Nws cim feature yog tias yog hais tias nws nkag mus rau hauv kwj ntawm cov them hais rau nws lawv kinetic zog nyob rau hauv ib tug tej yam ntuj tso txoj kev yog hloov dua siab tshiab rau hauv lub teeb. Yog li, ib tug CRT saib yog ib tug ntaus ntawv nyob rau hauv uas tus kab teeb ntawm lub electron beams hauv lub silhouetted duab screen. Tus txiv neej pom nws, ua tsaug rau lub emission ntawm lub phosphor.

Nyob rau lwm cov tes lub hwj yog muab tso rau ib ntu ntawm electrodes, hu ua cannon. Lawv tsim ib tug kwj ntawm hais.

Nyob rau hauv lwm yam lus, lub CRT saib muaj ib tug iav raj-phom electrodes thiab cov kev tswj Circuit Court.

hauv paus ntsiab lus ntawm cov lag luam

Raws li yog lub npe hu, nws ib tug tej yam piv ntawm peb thawj cov xim: ntsuab, xim liab thiab xiav - koj yuav tau txais tag nrho cov lwm leej lwm tus, xws li ntxoov. Cov xim saib tag nrho puab nto ntawm qhov screen muaj pixels, conventionally grouped nyob rau hauv Triads (blocks 3 daim). Txhua tus ntawm lawv yog tau ci ntsa iab ib yam ntawm cov thawj xim. Thiab peb electrodes, txhua tus uas tseem ceeb rau lawv "tus kheej" cov ntsiab lus uas. Nyob rau hauv tej yam kev txiav txim teeb pom kev zoo thiab dua lawv nyob rau qhov kev tshuaj ntsuam, nws tseem tau mus ua ib lub cev nqaij daim tawv duab. Incidentally, tus ntaus ntawv nyob rau hauv cov xim dub thiab dawb tsuas yog ib rab phom.

Yuav kom tswj cov ndlwg ntawm hais siv electromagnetic deflection thiab thawj zaug kev taw qhia ntawm cov lus tsa suab yog tsim, vim lub peev xwm sib txawv.

Txij li thaum technically nyuaj heev kom ua tau, siv ib tug tshwj xeeb kev txiav txim siab raug ntawm lub beam ntog rau nws qhov point - daim npog qhov ncauj. Kuj hais lus, qhov no yog ib tug perforated daim phiaj ntawm qhov kev tshuaj ntsuam thiab phom. Muaj ntau hom kev qhov ncauj qhov ntswg. Tej lawv yog lub luag hauj lwm rau cov zaub cov yam ntxwv (clarity, zoo-pixel ntsiab lus).

Txij li thaum tom qab ntaus glow phosphor hais txo sai heev, koj yuav tsum lossi rov tsim cov duab. Ob leeg zoo li qub thiab dynamic. Yog li ntawd rays kos nyob rau hauv kom meej lub duab dozens ntawm lub sij hawm ib ob. Qhov no yog tus naas ej Hertz ncej PP. Lub siab dua zaus, tsawg hnov flicker.

Tam sim no kho CRTs rau tom qab siv nyob rau hauv lub computer system yuav tsis tsim nyog, raws li cov niaj hnub LCD technology yog ntau pheej. Exception - ib lub siv.