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Cov duab video uas muaj ntau dua duab zoo dua cov dej ua kua ntses, tiam sis yuav ua tau hnyav thiab sib sib zog nqus

Cov duab video uas muaj ntau dua duab zoo dua cov dej ua kua ntses, tiam sis yuav ua tau hnyav thiab sib sib zog nqus

Apr 21, 2017

Cathode duab tshav raj


From Wikipedia, dawb encyclopedia

(Redirected los ntawm   Cathode Ray Tube )

Cutaway rendering ntawm cov xim CRT:
1. Peb electron emitters (liab, ntsuab, thiab xiav phosphor dots)
2. Electron beams
3. Tsom coils
4. deflection coils
5. Kev twb kev txuas rau ob anode (xa mus rau raws li qhov "ultor" nyob rau hauv ib co uas tau txais raj manuals)
6. Daim npog qhov ncauj rau cov nkauj nraug beams liab, ntsuab, thiab xiav yog ib feem ntawm tso tawm kom pom duab
7. Phosphor txheej (screen) nrog liab, ntsuab, thiab xiav aav
8. Close-up ntawm tus phosphor coated sab hauv sab ntawm lub screen

Lub   Cathode txoj sab ci raj   (CRT) yog ib tug   Nqus plua plav   Uas muaj ib los yog ntau dua   Electron phom   Thiab a   Phosphorescent   Screen, thiab siv los tso saib cov duab. [1]   Nws modulates, accelerates, thiab deflects electron beam (s) mus rau qhov kev tshuaj ntsuam los ua cov duab. Cov duab yuav sawv cev hluav taws xob   Waveforms   ( Oscilloscope ), duab (TV,   computer saib ),   radar lub hom phaj, los yog lwm tus neeg. CRTs kuj tau   siv raws li nco li , nyob rau hauv uas cov ntaub ntawv ntawm qhov pom lub teeb tawm txim liab los ntawm lub fluorescent cov ntaub ntawv uas (yog tias muaj) tsis yog yuav los muaj teeb meem loj lub ntsiab lus rau ib tug yeeb yam observer (tab sis yog tus pom qauv nyob rau hauv lub raj lub ntsej muag tej zaum yuav cryptically sawv cev rau lub cia cov ntaub ntawv).

Hauv TV sets thiab computer monitors, tag nrho cheeb tsam ntawm lub raj yog luam dua thiab ua haujlwm nyob hauv ib qho qauv uas hu ua   raster . Tus duab yog tsim los ntawm kev tswj cov kev siv ntawm txhua yam ntawm peb   electron beams , ib qho rau txhua additive thawj xim (xim liab, ntsuab, thiab xiav) nrog ib tug   Video teeb liab   Raws li ib tug reference. [2]   Nyob rau hauv tag nrho cov niaj hnub CRT saib thiab televisions, cov kab teeb raug nyom los ntawm   magnetic deflection, ib tug ua magnetic teb generated los ntawm coils thiab tsav los ntawm hluav taws xob circuits nyob ib ncig ntawm lub caj dab ntawm lub raj, txawm hais tias   Electrostatic deflection   yog kheev siv nyob rau hauv oscilloscopes , ib hom ntawm   hluav taws xob kev kuaj ntsuas . [2]

Lub 14-inch cathode txoj hlua tube uas qhia nws cov deflection coils thiab electron phom

Raug xyoo 1950 United States monochrome   TV teeb

A tiaj CRT los ua ke rau hauv ib tug 1984 Sinclair FTV1 hnab tshos TV

Electron phom

CRT yog tsim los ntawm lub hnab ntawv iav uas yog loj, sib sib zog nqus (piv txwv, ntev ntawm lub ntsej muag ua ntej lub ntsej muag mus rau nram qab kawg), hnyav hnyav, thiab qov taus. Lub sab hauv ntawm CRT yog   Evacuated   mus rau kwv yees 0.01 Pa [3]   133 NPA. , [4]   Kev khiav tawm yog qhov tsim nyog los pab txhawb kev sib tw dawb ntawm electrons ntawm rab phom (s) mus rau lub raj lub ntsej muag. Tias nws yog evacuated ua tus tuav CRT uas phom sij txaus ntshai vim txoj kev pheej hmoo ntawm kev rhuav lub raj thiab ua rau muaj kev tsausmuag   implosion uas yuav hurl shards ntawm cov iav ntawm zoo tshaj tawm. Raws li muaj teeb meem ntawm kev nyab xeeb, lub ntsej muag yog feem ntau ua los ntawm tuab   lead iav thiaj li mus yuav mas tawg-resistant thiab los thaiv feem ntau   X-ray   Emissions, tshwjxeeb yog tias CRT siv nyob rau hauv tus neeg siv khoom.

Txij thaum lig 2000s, CRTs tau lom zem ntau hloov txoj kev cai los ntawm newer " tiaj vaj huam sib luag " zaub technologies xws li   LCD ,   ntshav zaub , thiab   OLED   Cov lus qhia, uas nyob rau hauv cov ntaub ntawv ntawm LCD thiab OLED cov lus muaj cov khoom qis dua thiab kev siv fais fab, nrog rau cov nyhav thiab ntau dua. Piav vaj huam sib luag qhia kuj tuaj yeem ua rau ntau ntau qhov loj; Whereas 38 "mus rau 40" yog hais txog qhov loj tshaj plaws ntawm ib lub xov tooj cua CRT, lub lauj kaub rau ntawm 60 "thiab ntau qhov loj.

Txheem

  [Nkaum]

·          1History

·          2Oscilloscope CRTs

O     2.1Phosphor persistence

O     2.2 Microchannel phaj

O     2.3Graticules

O     2.4Image cia tubes

O     2.5Data cia tubes

·          3Color CRTs

O     3.1Txhais thiab purity nyob rau hauv cov xim CRTs

O     3.2Degaussing

·          4Vector saib

·          5CRT daws teeb meem

·          6Xammaus

·          7 Lwm hom

O     7.1Cat qhov muag

O     7.2Charactrons

O     7.3Nimo

O     7.4 Tsuas nqaj CRT

O     7.5Zeus nyias crt zaub

·          821st xyoo pua siv

O     8.1Xwb

O     8.2Yeej

O     8.3Slimmer CRT

·          9Qhov kev txhawj xeeb

O     9.1Hloov hluav taws xob

O     9.2Toxicity

O     9.3Flicker

O     9.4 Siab nrov suab nrov nrov

O     9.5Implosion

O     9.6Electric poob siab

·          10Qhov kev txhawj xeeb

·          11Recycling

·          12Tej ntawd kuj yog

·          13References

·          14Txhua ntaub ntawv pov thawj

·          15Xib sab nraud

Keeb kwm [ edit ]

Braun tus mob khaub thuas txias-cathode CRT, 1897

Cathode rays tau pom los ntawm   Johann Hittorf   Nyob rau hauv 1869 hauv txheej thaum ub   Crookes hlab . Nws tau pom tias qee tus neeg tsis paub tias tau hnov tawm ntawm lub   Cathode   (Tsis zoo electrode) uas yuav pov tau ntxoov ntxoo rau ntawm phab ntsa ntawm lub raj, qhia txog cov hluav taws xob tau taug kev hauv cov kab ncaj nraim. Xyoo 1890,   Arthur Schuster pom cathode rays yuav tau deflected los ntawm   hluav taws xob teb , thiab   William Crookes   Tsom lawv yuav tau deflected by magnetic teb. Xyoo 1897,   JJ Thomson   ua tau zoo nyob rau hauv ntsuas lub loj ntawm cathode rays, uas qhia hais tias lawv muaj tsis zoo them hais me me tshaj atoms, cov thawj " subatomic hais ", uas tau tom qab tis npe hu ua   electrons . Qhov ntxov tshaj plaws ntawm CRT raug hu ua "Braun Twj", tsim los ntawm tus German physicist   Ferdinand Braun   nyob rau hauv 1897. [5] [6]   Nws yog ib tug   Txias-cathode   diode , ib tug kev hloov kho ntawm lub   Crookes raj   Nrog ib tug   phosphor -coated screen.

Nyob rau hauv 1907, Lavxias teb sab kws tshawb fawb   Boris Rosing   Siv CRT hauv qhov kawg ntawm kev sim   Video teeb liab   Tsim ib daim duab. Nws tau tswj los ua kom pom cov duab yooj yim hauv daim duab, uas yog thawj zaug uas CRT tshuab tau siv rau qhov tam sim no hu ua TV. [1]

Thawj cathode txoj kab tshav dav hlau siv ib lub   Kub cathode   Yog tsim los ntawm   John B. Johnson   (Leej twg tau muab nws lub npe rau lub sij hawm   Johnson suab nrov ) thiab Harry Weiner Weinhart ntawm Western Electric , thiab los ua ib tug coj mus muag khoom nyob rau hauv 1922. [7]

Nws raug xaiv los ntawm inventor   Vladimir K. Zworykin   nyob rau hauv 1929. [8]   RCA   Tau txais ib lub cim rau lub sij hawm (rau nws txoj kab cathode txoj kab hluav taws xob) hauv xyoo 1932; nws yeem tso lub sij hawm rau cov pej xeem sau nyob rau hauv 1950. [9]

Thawj qhov kev ua luam tawm hauv TV nrog cov hlua cathode txoj hlua raug tsim los ntawm   Telefunken   nyob rau hauv lub teb chaws Yelemees nyob rau hauv 1934. [10] [11]

Oscilloscope CRTs [ edit ]

Tus Oscilloscope uas qhia   Lissajous nkhaus

Nyob rau hauv   Oscilloscope   CRTs,   Electrostatic deflection   Siv, tsis yog qhov sib nqus deflection feem ntau siv nrog TV thiab lwm cov CRTs. Cov nqaj yog deflected horizontally los ntawm kev thov   Fais fab teb   Nruab nrab ntawm ib kab ntawm daim hlau mus rau nws sab laug thiab txoj cai, thiab vertically los ntawm kev thov ib qho hluav taws xob rau daim phiaj saum toj saud thiab hauv qab. Televisions siv cov hlau nplaum es tsis txhob siv hluav taws xob los ntawm qhov hluav taws xob ua rau lub plhaub taum hle qhov lub plhaub taum loj yog qhov loj tshaj li qhov yuav tsum tau rau cov leeg uas luv luv rau lawv qhov me me.

Phosphor persistence [ edit ]

Ntau ntau   Phosphors   Muaj nyob ntawm seb cov kev xav tau ntawm kev ntsuas lossis cov ntaub ntawv tso tawm. Kev ci ntsa iab, xim, thiab kev xav ntawm lub teeb pom kev zoo nyob ntawm seb hom phosphor siv rau ntawm CRT screen. Cov phosphors muaj nrog persistences xws li tsawg dua ib qho   Microsecond   Rau ob peb feeb. [12]   Rau kev pom kev pom ntawm cov kev tshwm sim luv luv, ib tus neeg mob siab ntev ntev yuav tau txaus. Rau cov xwm txheej uas yog ceev thiab repetitive, los yog siab, ib qho luv luv-persistence phosphor feem ntau nyiam. [13]

Microchannel phaj [ edit ]

Thaum saib ceev ceev ib qho kev tshwm sim, tus nqaj hlau electron yuav tsum tau thuam tawm sai heev, nrog ob peb electrons impinging ntawm qhov screen, ua rau ib tug faint lossis pom duab ntawm cov zaub. Oscilloscope CRTs tsim los rau cov vas nthiv cov vas nthiv tuaj yeem muab cov zaub uas muaj zog dua los ntawm dhau lub nqus hlau electron mus txog   micro-channel phaj cia li ua ntej nws nce mus txog cov kev tshuaj ntsuam. Los ntawm phenomenon ntawm   theem nrab emission , qhov no phaj multiplies tus xov tooj ntawm electrons xeeb phosphor screen, muab ib tug tseem ceeb kev txhim kho nyob rau hauv kev sau ntawv npaum li cas (brightness) thiab paub rhiab heev thiab chaw me me li zoo. [14] [15]

Graticules [ edit ]

Cov oscilloscopes feem ntau muaj a   Graticule   Raws li ib feem ntawm qhov pom kev pom, los pab daws cov kev ntsuam xyuas. Lub graticule yuav cim tau hauv lub ntsej muag ntawm lub CRT, los yog nws kuj yog ib lub tsho zoo sab nraud ntawm iav los yog   Acrylic   Yas. Ib sab hauv graticule eliminates   parallax kev ua yuam kev , tab sis tsis tau hloov kom haum raws li ntau hom kev ntsuam. [16]   Oscilloscopes feem ntau muab ib qho cuab yeej rau lub graticule yuav tsum illuminated los ntawm sab, uas zoo dua nws cov visibility. [17]

Duab cia hlab [ edit ]

Lub Hom Phiaj Tektronix 564: Thawj Cov Khoom Uas Ua Rau Cov Khoom Uas Ua Lawm Oscilloscope

Cov no muaj nyob hauv   Analog   phosphor cia oscilloscopes. Cov no yog cov txawv ntawm   Cov cim cia oscilloscopes   Uas cia siab rau khoom hauv lub xeev cov cim xeeb los khaws cov duab.

Qhov twg tshwm sim los ntawm ib qho oscilloscope, ib qho kev tshwm sim yuav tshwm sim los ntawm ib lub raj siv pa thaum nws tshwm sim. Kev siv cov tshuaj ntev ntev tuaj yeem tso cai rau tom qab qhov kev tshwm sim, tab sis tsuas yog siv ob peb vib nas this los ntawm qhov zoo tshaj plaws. Qhov kev txwv no tuaj yeem kov yeej los ntawm kev siv ib qho kev saib xyuas ncaj qha cathode txoj kab tshav dav hlau (cia tube). Lub tshuab raj cia yuav muab tso rau qhov kev tshwm sim tom qab nws tau tshwm sim txog rau thaum lub sij hawm zoo li no. Lub raj tso cia zoo ib yam li cov pa luam yeeb tshwj xeeb uas nws tau txais nrog ib daim hlau kab coated nrog a   Dielectric   Txheej nyob tom qab qhov ntswg screen. Ib qho externally applied voltage rau lub mesh pib kom paub meej tias tag nrho mesh yog nyob rau hauv ib qho kev muaj peev xwm. Cov mesh no tseem tuaj yeem tshwm rau ib qho qis tshaj electron nqaj ntawm qhov 'rog rab phom' uas ua haujlwm ntawm nws tus kheej lub phom loj. Qhov phom sij dej nyab tsis yog deflected li rab phom uas tseem ceeb, tab sis tas li 'illuminates' tus kheej ntawm lub mesh cia. Thawj cov nqi them rau hauv cov mesh cia yog xws li tua cov electrons los ntawm qhov kev nyab xeeb rab phom dej uas tiv thaiv kom tsis txhob tawm cov phosphor screen.

Thaum lub tshuab hluav taws xob loj loj sau ib qho duab rau qhov kev tshuaj ntsuam, lub zog hauv cov nqaj loj yog txaus los tsim kom tau ib qho 'kev pabcuam nyem' rau ntawm cov khoom khib nyiab. Cov cheeb tsam no qhov kev tsim tawm no tsis tau muab cov electron tawm ntawm cov phom duav uas tam sim no dhau los ntawm lub mesh thiab ci ntsa kom pom lub phosphor screen. Yog li ntawd, daim duab uas tau luv luv los ntawm rab phom tseem tseem tuaj yeem tshwm tuaj tom qab nws tau tshwm sim. Cov duab yuav ua 'erased' los ntawm resupplying tus sab nraud voltage rau lub mesh restoring nws qhov tsis muaj peev xwm. Lub sij hawm uas cov duab yuav tsum tau tawm tsam yog vim, hauv kev xyaum ua, rab phom dej nyab qeeb neutralises tus nqi ntawm cov khoom khib nyiab. Ib txoj kev uas cia cov duab khaws tseg rau ntev dua yuav tsum mus tua cov phom ntsws. Nws yog qhov ua tau rau cov duab khaws cia rau ob peb hnub. Feem ntau ntawm cov raj tso cia rau qhov qis dua kom siv tau rau cov yas mesh uas maj mam rov qab pib lub xeev nqi. Los ntawm qhov sib txawv ntawm qhov no muaj qhov hloov siab ntev hloov mus. Tig tua phom dej nyab thiab cov khoom siv hluav taws xob tso rau qhov chaw cia ua lub raj tso cai rau lub raj siv ua ib lub raj tsom kom pom cov pa oscilloscope. [18]

Cov ntaub ntawv cia hlab [ edit ]

Main tsab xov xwm:   Williams raj

Williams raj lossis Williams-Kilburn raj yog lub cathode txoj kab tsho tawm siv hluav taws xob khaws cia cov ntawv qhia binary. Nws tau siv hauv computers ntawm lub xyoo 1940 los ua cov khoom siv digital cia. Nyob rau hauv sib piv rau lwm CRTs hauv tsab xov xwm no, Williams lub raj tsis yog cov khoom ntaus ntawv, thiab qhov tseeb tsis tuaj yeem saib vim muaj phaj hlau them nws qhov screen.

Xim CRTs [ edit ]

Magnified saib ntawm ib tug delta-gun   duab ntxoov ntxoo daim npog qhov ncauj xim CRT

Loj pom ntawm ib tug Trinitron   Xim CRT

Spectra ntawm cov dej xiav, ntsuab thiab liab phosphors hauv ib hom CRT

Cov hlab ntsha siv peb hom phosphor uas tawm liab liab, ntsuab, thiab xiav xim. Lawv tau ntim ua ke hauv kab txaij (raws li nyob rau hauv   Aperture grille   Tsim) lossis pawg hu ua pawg   "Triads"   (Raws li nyob rau hauv   Duab ntxoov ntxoo daim npog qhov ncauj   CRTs). [19]   Xim CRTs muaj peb hom hlau phom, ib qho rau txhua tus xim thawj xim, txheej txheem ntawm ib txoj kab ncaj nraim lossis hauv ib qho   Equilateral triangular   Configuration (cov phom yog feem ntau tsim ua ib lub tsev xwb). (Qhov sib xyaws tsis sib haum xeeb feem ntau hu ua "delta-gun", raws li nws txoj kev sib raug zoo ntawm cov lus Greek ntawv delta Δ.) Ib qho siv los yog lub npog qhov ncauj tawm hauv cov electrons uas yuav tsis ntaus phosphor tsis yog. [20]   A   Duab ntxoov ntxoo daim npog qhov ncauj   Raj siv lub phaj hlau nrog qhov me me qhov, muab tso rau qhov hluav taws xob hluav taws xob tsuas taws teeb phosphors ntawm lub ntsej muag ntawm lub raj; [19]   Cov qhov yog qhov tseem ceeb yog tias cov electrons uas thev rau sab hauv ntawm lub qhov twg yuav rov qab los, yog tias lawv tsis nqhis dej (piv txwv li yog vim them nqi hauv zos), tsis muaj kev cuam tshuam los ntawm lub qhov rau kev tawm tsam qhov chaw tsis muaj tseeb (qhov tsis ncaj ncees) Screen. Lwm hom ntawm cov xim CRT siv ib tug aperture grille   Ntawm tensioned ntsug xov hlau kom ua tiav tib yam. [20]

Convergence thiab kev coj dawb huv nyob rau hauv cov xim CRTs [ edit ]

Vim muaj cov kev txwv hauv qhov muaj qhov ntev uas muaj CRTs tuaj yeem tsim kev lag luam, nws tsis tau ua suab tau tsim cov xim CRTs uas peb electron beams yuav mus ua ke los ntaus cov phosphors ntawm cov xim xim hauv kev sib yeem, ua tau los ntawm cov hauv paus ntawm cov geometric Kev sib tw ntawm daim npav ntsej muag thiab cov cuab yeej ua kom pom tseeb, duab ntxoov ntxoo qhov ncauj qhov ntswg, thiab lwm yam. Tus duab ntxoov ntxoo kom paub tseeb tias ib nqaj yuav tsuas muab cov xim ntawm cov phosphors rau, tab sis cov kev sib hloov ntawm lub cev ntawm cov tib neeg CRTs yuav ua variations Nyob rau hauv cov lus qhia ncaj nraim ntawm kab xov xwm los ntawm daim npog ntsej muag, siv ib co electrons los ntawm, piv txwv li, liab tsoo kom ntaus, hais tias, xiav phosphors, tshwj tsis yog qee tus neeg them nyiaj rau kev hloov ntawm cov leeg leeg.

Xim convergence thiab xim purity yog ob yam ntawm qhov teeb meem no. Ua ntej, rau cov xim kom muaj tseeb yog qhov tsim nyog uas tsis hais txog qhov twg lub kab teeb ntawm deflected ntawm qhov screen, tag nrho peb tsoo tib qhov chaw (thiab nominally kis los ntawm tib lub qhov los yog qhov) rau ntawm daim npog qhov muag. Qhov no hu ua convergence. [21]   Ntxiv dua thiab, lub convergence ntawm qhov chaw ntawm lub vijtsam (nrog rau tsis muaj qhov chaw deflection uas siv los ntawm cov cuab khuam) yog hu ua zoo li qub, thiab lub convergence nyob ntawm thaj tsam ntawm qhov screen yog hu ua dynamic convergence. Cov kab teeb yuav dhia ntawm qhov chaw ntawm lub vijtsam thiab tseem tawm ntawm ib leeg thaum lawv tawm mus rau ntawm cov ntug; Xws li ib tug CRT yuav hais tau kom zoo zoo li qub convergence tab sis tsis zoo dynamic convergence. Secondly, txhua lub nqaj yuav tsum tsuas yog thos lub phosphors ntawm cov xim nws yog npaj los tawm tsam thiab tsis muaj lwm tus neeg. Qhov no yog hu ua purity. Zoo li kev sib haum xeeb, muaj purity static thiab dynamic purity, nrog tib lub ntsiab lus ntawm "static" thiab "dynamic" rau kev sib koom tes. Convergence thiab purity yog cov tsis muaj; Ib CRT ua tau zoo purity tab sis tsis sib haum xeeb, los sis lwm tus. Kev sib haum xeeb tsis zoo los ua xim "ntxoov ntxoo" los yog "ghosts" raws li cov npoo thiab cov nkhaus, xws li cov duab ntawm qhov screen tau intaglio luam nrog cov ntawv ploj. Txom nyem tsis zoo rau cov khoom ntawm qhov kev npau taws kom tshwm tuaj-xim thaum lawv sawv ntsug. Purity and convergence teeb meem yuav tshwm sim tib lub sij hawm, nyob rau tib qho los sis ntau qhov chaw ntawm qhov screen los yog ob qho tib si thoob plaws lub vijtsam, thiab txawm tias sib npaug los yog ntau dua los yog tsawg dua nyob rau ntau qhov chaw ntawm qhov screen.

Txoj kev daws teeb meem kom zoo li qub thiab teeb meem ntawm kev noj qab haus huv yog cov txheej txheem cov xim nplaum xim nyob ib ncig ntawm lub caj dab ntawm CRT. Cov pob zeb no tsis muaj zog ntawm cov hlau nplaum tas li yog feem ntau tau muab tso rau sab nraub qaum los ntawm lub cuab yeej ywj pheej thiab muab tso rau ntawm lub hoobkas kom them nyiaj rau txhua yam purity zoo li qub thiab cov teeb meem tsis sib thooj uas yog qhov tseem tsis tau mus rau qhov chaw tsis raug cai. Feem ntau muaj ob lossis peb leeg ntawm ob lub hlau nplaum nyob rau hauv daim ntawv ntawm ib ncig ntawm yas impregnated nrog ib tug sib nqus khoom, nrog lawv   Magnetic teb   Mus tib seem rau cov dav hlau ntawm cov hlau nplaum, uas yog perpendicular rau cov hlau electron phom. Ib khub ntawm sib nqus rings tsim ib zaug xwb cov hlau nplaum uas nws daim teb   Vector   Yuav ua tau siab thiab dawb do taus (hauv kev coj thiab qhov siab). Los ntawm kev tig ib lub nkoj ntawm cov hlau nplaum sib cuam tshuam rau ib leeg, lawv cov kev sib txig sib nrig sib xyaw cuab yeej ua kom sib txawv, kho lub zog ntawm qhov khoob ntawm qhov khoob zog. (Thaum lawv tig sib ti ua ke, txhua lub tsev ntawv magnet tau pom tias muaj ob feem sib tawm tsam ntawm cov ces kaum, thiab cov plaub yam [ob leeg rau ob lub phom sij] ob leeg ua ke, ib khub txuas ntxiv ib leeg thiab ob leeg sib tawm tsam thiab Sib nrug deb ntawm kev sib dhos, cov hlau nplaum sib txuas ua ke nrog cov khoom sib txuas kom tsawg dua li lawv cov kev lag luam tawm tsam kev sib cog lus, tshem tawm cov khoom ua ke.) Hloov ntawm ob sab phom sij ua ke, khaws cov neeg nruab nrab ntawm lawv, Magnetic teb yuav ua varied. Zuag qhia tag nrho, kho tag nrho cov convergence / purity magnets tso cai rau ib qhov zoo me ntsis electron beam deflection los yog lateral offset yuav tsum muaj ntaub ntawv, uas compensates rau me ntsis zoo li qub convergence thiab purity yuam kev intrinsic rau lub raj uncalibrated. Thaum teem caij, cov hlau nplaum no feem ntau ua rau qhov chaw, tab sis feem ntau lawv tuaj yeem tso tawm thiab rov kho dua tshiab hauv qhov chaw (xws li lub TV repair shop) yog tias tsim nyog.

Rau qee qhov CRTs, ntxiv cov hlau nplaum adjustable hlau ntxiv rau dynamic convergence lossis dynamic purity ntawm cov ntsiab lus ntawm qhov kev tshuaj ntsuam, feem ntau nyob ze ntawm cov kev fab lossis cov npoo. Ntxiv kev hloov ntawm dynamic convergence thiab purity feem ntau tsis tau ua passively, tab sis yuav tsum tau muaj zog compensation circuits.

Dynamic colour convergence thiab purity yog ib qho ntawm lub ntsiab yog vim li cas thiaj li txog lig rau lawv cov keeb kwm, CRTs tau ntev-caj (tob) thiab tau biaxially curved ntsej muag; Cov qauv kev tsim qauv ntawm cov duab geometric yog qhov tsim nyog rau cov neeg tawv nqaij tawv xim tsis sib haum xeeb thiab kev coj dawb huv. Tsuas pib pib ib ncig ntawm lub xyoo pua tau ua cov sophisticated dynamic dynamic convergence compensation Circuits ua muaj uas ua luv luv-lub taub hau thiab lub ntsej muag muag CRTs workable. Cov kev pab cuam no tau siv lub defective yoke mus rau finely kho beam deflection raws li lub qhov chaw phiaj beam. Cov tswv yim tib yam (thiab cov khoom loj hauv Circuit Court) kuj ua kom qhov kev hloov ntawm cov duab kev sib hloov, pleev, thiab lwm yam   Raster   Ntsuas tsis dhau ntawm electronics raws li tus neeg siv kev tswj.

Degaussing [ edit ]

Ib qhov degaussing hauv kev kawm.

Yog hais tias tus duab ntxoov ntxoo daim nplaum ua magnetized, nws qhov chaw magnetic deflects electron beams dua los ntawm nws, ua rau xim purity distortion raws li kab teeb khoov los ntawm lub npog qhov thiab ntaus qee cov xim ntawm lwm yam xim uas tsis yog qhov uas lawv npaj los tawm tsam; Xws li qee lub e-electrons los ntawm liab beam yuav ntaus xiav phosphors, muab ntshiab liab qhov chaw ntawm daim duab ib magenta tint. (Magenta yog qhov sib ntxiv ntawm cov xim liab thiab xiav.) Cov nyhuv no yog nyob rau cheeb tsam ntawm lub vijtsam yog tias qhov magnetization ntawm tus duab ntxoov ntxoo qhov ncauj yog qhov chaw. Yog li ntawd, nws yog ib qho tseem ceeb uas tus duab ntxoov ntxoo daim npog qhov ncauj yog qhov tsis zoo. (Ib qho magnetized aperture Grille muaj cov nyhuv zoo sib xws, thiab txhua yam tau teev nyob rau hauv nqe lus no txog cov duab ntxoov ntxoo qhov ntxoov ntxoo siv tau rau lub qhov ncauj qhov ntswg.)

Cov xim CRT feem ntau, xws li cov ntawv teev hauv TV thiab lub computer ntsuas, txhua tus muaj ib qho teeb tsa   Degaussing   (Demagnetizing) Circuit Court, qhov kev tivthaiv uas yog lub degaussing coil uas yog kev txhawb zog ntawm ib puag ncig ntawm lub ntsej muag ntawm lub ntsej muag CRT hauv lub   Bezel . Thaum lub hwj huam tu ntawm CRT cov duab, lub voj voos ntawm lub voj voos hloov ua ib qho luv luv, hloov tam sim no los ntawm qhov degaussing kauj uas ua kom zoo nyob rau hauv lub zog (ploj tawm) mus xoom tshaj li ib lub sijhawm ntawm ob peb feeb, ua ib lub plhom hloov ntawm magnetic field ntawm lub kauj . Qhov no degaussing teb yog muaj zog txaus kom tshem tawm cov duab ntxoov ntxoo daim npog qhov ncauj ntau zaus. [22]   Hauv qee zaum muaj zog ntawm qhov muaj zog hauv qhov chaw uas tsis muaj txaus, tus npog ncauj ntxoov ntxoo yuav raug tshem tawm nrog ib qho chaw ruaj ntseg los yog siv lub zog. Txawm li cas los xij, ib qho chaw muaj zog ntawm cov hlau nplaum, tsis hloov lossis tsis tu ncua, puas tuaj yeem ua haujlwm   Deform   (Khoov) tus duab ntxoov ntxoo daim npog qhov muag, ua rau xim muaj xim nyob rau ntawm cov zaub uas zoo nkaus li zoo ib yam li cov nyhuv magnetization.

Lub voj voog degaussing feem ntau yog tsim ntawm ib   Thermo-hluav taws xob   (Tsis hauv hluav taws xob) uas muaj lub me cua kub thaij hluav taws thiab lub thawv zoo   coefficient (PTC)   resistor , kev cob cog rua ncaj qha mus rau lub hloov   AC zog   Kab nrog tus tiv taus hauv koob nrog degaussing kauj. Thaum lub hwj chim tig rau, lub cua sov yuav kub lub PTC resistor, nce nws tsis kam mus rau ib qho chaw uas qhov degaussing tam sim no tsawg, tab sis tsis yog xoom. Hauv CRT cov lus, cov qib qis tam sim no (uas ua rau tsis muaj teeb meem loj degaussing teb) yog nrog rau qhov kev txiav txim ntawm qhov cua kub kom ntev li ntev tau cov zaub nyob twj ywm. Yuav kom rov ua dua lub voj voog, lub CRT zaub yuav tsum tau muab tua thiab tawm sab nraud ob peb lub vib nas this kom rov qab kho qhov teeb meem degaussing los ntawm lub PTC resistor kom txias mus rau   ambient kub ; Hloov cov zaub-tawm thiab tam sim ntawd rov qab yuav ua rau lub voj voog degaussing los yog tsis muaj kev hloov degaussing.

Qhov kev tsim cov qauv no zoo thiab pheej yig los tsim, tab sis nws qee lub hwj chim tsis tu ncua. Tom qab cov qauv, tshwj xeeb tshaj yog   Lub Hnub Qub Cua   Cov nuj nqis, siv tus   Relay   Hloov cov voj voog degaussing tag nrho thiab tawm, kom lub voj voog degaussing siv zog thaum nws muaj kev ua haujlwm thiab xav tau. Tus qauv tsim kuj ua rau tus neeg siv dag zog los ntawm cov khoom vaj huam sib luag ntawm lub hauv paus tswj kev tswj, yam tsis muaj kev hloov ntawm lub tsev thiab dua. Cov lus no feem ntau hnov tau tawm ntawm qhov kawg ntawm qhov degaussing voj vev vev tsom tom qab ob peb feeb tom qab qhov chaw nres tsheb qhib, thiab nyob rau hauv thiab tawm thaum lub sij hawm siv tus txheej txheem ntawm qhov pib ntawm tus kheej.

Vector saib [ edit ]

Main tsab xov xwm:   Vector monitor

Vector monitors tau siv thaum ntxov hauv computer aided tsim tshuab thiab muaj qee xyoo lig-1970s mus rau mid-1980s arcade games xws li   Asteroids . [23]   Lawv kos graphics taw tes rau-point-rau-taw tes, es tsis yog ib qho rhiav. Xws li cov monochrome los yog xim CRTs hauv vector cov lus, thiab qhov tseem ceeb ntawm CRT tsim thiab kev lag luam yog tib yam rau ob hom zaub; Qhov txawv qhov sib txawv yog nyob rau hauv cov nqaj deflection qauv thiab circuits.

CRT daws teeb meem [ edit ]

Dot suab   Txhais cov lus tshaj tawm ntawm cov lus, piv txwv tias yog delta-gun CRTs. Hauv cov no, raws li cov kev daws teeb meem ntawm kev daws teebmeem cov lus teev cia,   moiré zoo nkaus li, raws li lub meej raug tso tawm yog finer tshaj li tus duab ntxoov ntxoo daim npog qhov ncauj yuav kav. [24]   Aperture grille monitors tsis raug kev txom nyem los ntawm ntsug moiré; Txawm li cas los xij, vim hais tias lawv cov phosphor stripes tsis muaj kev qhia ntsug. Hauv cov CRTs, cov strips tswj tuav ntawm lawv tus kheej, tab sis loj dua aperture-grille CRTs yuav tsum tau ib los yog ob kab thaiv (kab rov tav) kev them nyiaj yug. [25]

Gamma [ edit ]

CRTs muaj ib cov lus qhia   Triode   Tus cwj pwm, uas ua rau tseem ceeb   Gamma   (Kev sib raug zoo ntawm txoj kev tsis sib thooj hauv ib qho hluav taws xob ntawm tshuab hluav taws xob thaum siv qhov video qhov hluav taws xob thiab kab siv txoj hlua). [26]

Lwm yam [ edit ]

Miv lub qhov muag [ edit ]

Main tsab xov xwm:   Khawv koob lub qhov muag

Nyob hauv kev zoo dua qub qub xov tooj cua hauv cov xov tooj cua, cov txheej txheem nyob hauv tuning muaj cov phosphor tube siv los pab kho qhov kev hloov kho. Qhov no kuj hu ua "Khawv koob Eye" lossis "Tuning Eye". Tuning yuav raug kho kom txog rau thaum lub dav ntawm ib radial duab ntxoov ntxoo tau minimized. Qhov no tau siv lub tshuab hluav taws xob ntau dua, uas tom qab tuaj siv los ntawm ntau dua qhov kawg tuners thaum transistor teev tsis muaj qhov siab voltage yuav tsum tau tsav lub ntaus ntawv. [27]   Tib hom ntaus ntawv siv nrog cov xev recorders los ua ntsuas lub ntsuas, thiab rau ntau yam kev siv nrog rau cov khoom siv hluav taws xob.

Charactrons [ edit ]

Qee cov lus qhia rau cov computers thaum ntxov (cov uas xav tau los tso ntau cov ntaub ntawv dua li siv cov vectors, los yog yuav tsum tau muaj kev ceev ceev rau cov duab tso tawm) siv   Charactron   CRTs. Cov teeb ib perforated hlau cim daim npog qhov ncauj ( Stencil ), uas seem ntau electron nqaj mus ua ib lub cim rau qhov kev tshuaj ntsuam. Lub system xaiv ib lub cim ntawm lub npog ntsej muag siv ib txheej ntawm deflection circuits, tab sis qhov ntawd ua rau cov nqaj hlau extruded los tswj ntawm-axis, yog li txheej thib ob ntawm deflection daim hlau muaj rov taw lub nqaj ces nws yog taws mus rau qhov chaw Qhov screen. Ib txheej thib peb ntawm daim hlau yog qhov ua cim qhov twg los xij. Cov nqaj yog qhov teeb meem (muab) rau luv luv los kos cov cim ntawm qhov chaw ntawd. Cov duab kos tau kos los ntawm xaiv txoj hauj lwm ntawm lub npog ntsej muag sib thooj rau qhov chaws rau qhov chaw (hauv kev xyaum, lawv tsis tau kos), uas muaj qhov me me qhov ncig ntawm qhov chaw; Qhov no ua tsis zoo rau tus cwj pwm ntawm daim duab, thiab qhov system hloov mus rau tus cwj pwm vector li niaj zaus. Charactrons tau kws ntev ntev, vim hais tias peb xav tau peb lub deflection system. [28] [29]

Nimo [ edit ]

Main tsab xov xwm:   Nimo raj

Nimo tube BA0000-P31

Nimo yog lub cim lag luam ntawm ib tsev neeg ntawm cov kws kho tshwj xeeb tsawg CRTs los ntawm Electronics Engineers. Cov no muaj 10 electron cov phom uas ua hluav taws xob hauv hluav taws xob hauv daim ntawv ntawm tus lej hauv ib qho zoo ib yam li cov charactron. Cov hlab ntaws tau yooj yim ib qho yooj yim los yog ntau tshaj 4 los yog 6 digit cov duab uas tau tsim los ntawm txoj hauv kev tsim hluav taws xob. Muaj me ntsis ntawm cov complexities ntawm tus qauv CRT, lub raj yuav tsum yog ib qho yooj yim tsav tsheb Circuit Court, thiab raws li daim duab tau tso tawm ntawm lub ntsej muag iav, nws muab ntau lub dav dua saib tshaj qhov sib tw (piv txwv li,   nixie hlab ). [30]

Dej nyab beam CRT [ edit ]

Kev nqaj hlau nqaj CRT yog cov leeg me me uas yog npaj pixels rau cov ntxaij vab tshaus loj   TV loj loj s. Thawj lub vijtsam uas siv cov tshuab no yog nkag los ntawm   Mitsubishi Electric   Rau cov   1980 Major League Baseball All-Star kev ua si . Nws txawv ntawm lub qub CRT nyob rau hauv tias lub tshuab hluav taws xob tsis pub dhau tsis ua ib qho kev sib tsoo ntawm kev tswj xyuas. Xwb, cov electrons tau txau rau hauv ib qho thoob plaws lub thoob ntawm lub phosphor screen, ua rau txhua lub tsev ua raws li ib lub teeb teeb. [31]   Txhua tus yog coated nrog ib tug liab, ntsuab los yog xiav phosphor, kom cov xim sub-pixels. Cov cuab yeej siv no tau muab hloov lawm   Teeb emitting diode   Qhia. A   Zoo li cov khoom siv   Tau raug xa tawm los ntawm ib lub tuam txhab ua lub teeb.

Zeus nyias CRT zaub [ edit ]

Hauv qhov kawg xyoo 1990 thiab ntxov 2000s   Philips Research Laboratories   Sim nrog ib hom kev nyias nyias lub npe hu ua tus   Zeus   Zaub uas muaj cov CRT-zoo li kev ua haujlwm hauv ib qho   tiaj vaj huam sib luag zaub . [32] [33] [34] [35] [36]   Cov cuab yeej siv tau qhia tab sis yeej tsis tau marketed.

Xyoo pua 21st pab [ edit ]

Demise [ edit ]

Txawm hais tias ib qho tseem ceeb ntawm cov cuab yeej siv technology rau xyoo, CRT raws computer xyuas thiab televisions ua ib lub tshuab tua tuag. Qhov kev thov rau CRT cov ntxaij vab tshaus tau poob qis dua txij li xyoo 2007, thiab lub caij nplooj ntoos zeeg no tau ceev nrawm hauv ob lub xyoos dhau los ntawm xyoo ntawd. Cov kev nce qib sai thiab nqis ntawm cov nqi   LCD   tiaj vaj huam sib luag technology, ua ntej rau computer saib thiab ces rau televisions, tau lub tseem ceeb nyob rau hauv lub demise ntawm competing zaub technologies xws li CRT,   rear-projection , thiab   ntshav zaub . [37]

Qhov kawg ntawm feem ntau high-end CRT ntau lawm los ntawm ib ncig ntawm 2010 [38]   (Suav nrog cov qauv Sony thiab Mitsubishi cov kab muag khoom) txhais tau tias yog lub zog ntawm CRT lub peev xim. [39] [40]   Hauv Canada thiab Tebchaws Asmeskas, qhov muag thiab kev tsim cov CRT TVs high-end (30-inch screens) nyob rau hauv cov khw no tau tag nrho, tab sis xaus los ntawm 2007. Ob peb xyoo tom qab, pheej yig combo CRT TVs (20-inch screens nrog Ib tus neeg ua si hauv VHS) uas tau poob ntawm cov khw muag khoom luv nqi. Nws tau nquag hloov cov CRT-based televisions thiab tsom kwm me ntsis li 5-6 xyoo, tab sis lawv feem ntau muaj peev xwm txaus siab rau kev kawm ntev zog.

Cov lag luam yuav teb cov lus no. Electronics retailers xws li Qhov Zoo Tshaj Plaws tau tau tsis tshee txo cov khw muag khoom rau CRTs. Nyob rau hauv 2005, Sony tshaj tawm hais tias lawv yuav nres qhov ntau lawm ntawm CRT lub computer cov lus. Samsung tsis paub tej CRT qauv rau cov 2008 qauv xyoo nyob rau 2008 Consumer Electronics Show, thiab nyob rau 4 Lub ob hlis ntuj 2008 Samsung tshem lawv 30 "dav screen CRTs los ntawm lawv cov North American website thiab tsis tau hloov lawv nrog tshiab qauv. [41]

Txawm li cas los, lub demise ntawm CRTs tau tshwm sim qeeb qeeb nyob hauv lub ntiaj teb loj hlob. Raws li iSupply, ntau lawm hauv cov pawg CRTs tsis tau dhau los ntawm LCDs cov khoom kom txog thaum 4Q 2007, tshuav ntau ntau rau CRT ntau lawm ntawm cov khoom nyob hauv Suav teb. Hauv tebchaws United Kingdom,   DSG (Dixons) , qhov loj tshaj plaws retailer ntawm domestic hluav taws xob khoom, tau qhia hais tias CRT qauv ua los 80-90% ntawm cov volume ntawm televisions muag thaum Christmas xyoo 2004 thiab 15-20% ib xyoos tom qab, thiab hais tias lawv yuav tsum muaj tsawg tshaj li 5% ntawm qhov kawg ntawm xyoo 2006. Dixons ceased muag CRT televisions nyob rau hauv 2006. [42]

Ua [ edit ]

CRTs, dua li cov kev kho tshiab tsis ntev los no, kuj tseem muaj hnyav thiab loj thiab siv ntau qhov chaw piv rau lwm cov duab yees. CRT cov ntxaij vab tshaus muaj ntau ntxaum ntxaum ntxig rau cov voj voog thiab cov nram qab-daim duab qhia txog ib qho screen loj, thiab yog li nws tau ua kom muaj CRTs loj tshaj 40 ntiv (102 cm). Lub CRT tsis zoo yog qhov tshwj xeeb tshaj yog qhov teebmeem ntawm cov kev siv technology sai   LCD   Thiab plasma tiaj-panels uas cia lawv mus tau yooj yim tshaj 40 ntiv (102 cm) thiab ua tau nyias thiab phab ntsa-mountable, ob lub ntsiab tseem ceeb uas tau nce rau kev thov los ntawm cov neeg tau txais kev pab.

Slimmer CRT [ edit ]

Ib qho kev sib piv ntawm 21-nti Superslim thiab Ultraslim CRT

Qee cov CRT manufacturers, ob qho tib si LG Display thiab Samsung Display, muaj kev sib tw CRT los ntawm kev tsim ib lub tshuab raj slimmer. Slimmer CRT muaj lub npe hu ua Superslim thiab Ultraslim. Lub 21-inch sib npaug CRT muaj 447.2 millimeter qhov tob. Qhov tob ntawm Superslim yog 352 millimetres thiab Ultraslim yog 295.7 millimeters.

Health kev txhawj xeeb [ edit ]

Ionizing tawg [ edit ]

CRTs yuav tawm tau me me   X-ray   Hluav taws xob tawg vim qhov tshwm sim ntawm cov nqaj hlau electron txoj kev cuam tshuam ntawm daim npog ntsej muag duab ntxoov ntxoo / aperture grille thiab phosphors. Tus nqi hluav taws xob tawm hauv ntej ntawm qhov ntsuas yog pom tias tsis yog teeb meem. Lub   Food and Drug Administration   Cov cai hauv   21 CFR   1020.10   Yog siv los txwv nruj me me, piv txwv tias, TV receivers mus rau 0.5   Milliroentgens   Ib moos (mR / h) (0.13 μC / (kg · h) los yog 36 pA / kg) ntawm qhov ntev ntawm 5 cm (2 tug) ntawm txhua qhov chaw sab nrauv; Txij li 2007, feem ntau CRTs muaj emissions uas poob zoo hauv qab no. [43]

Toxicity [ edit ]

Cov xim qub thiab monochrome CRTs yuav muaj tshuaj lom, xws li   cadmium , nyob rau hauv lub phosphors. [44] [45] [46]   Lub rear iav raj ntawm niaj hnub CRTs tej zaum yuav ua los ntawm leaded iav , uas sawv cev rau ib tug tej teeb meem yog tias pov tseg ntawm tsis ncaj ncees. [47]   By lub sij hawm tus kheej computers tau ua, iav nyob rau hauv pem hauv ntej vaj huam sib luag (cov viewable feem ntawm lub CRT) siv barium es lead, [ citation ntxiv ]   Txawm tias lub tsheb ntawm CRT yog tseem ua los ntawm leaded iav. Monochrome CRTs feem ntau tsis muaj cov iav txaus rau iav EPA TCLP. Thaum cov txheej txheem TCLP ua rau iav rau hauv cov nplua ntu kom txo tau lawv kom tsis muaj zog cov kua qaub (acid) rau leachate, CRT iav tsis leache (Cov kab no yog vitrified, hauv cov iav nws tus kheej, zoo ib yam li leaded iav crystalware).

Nyob rau hauv Lub Kaum Hlis Ntuj 2001, tus   Teb Chaws Meskas Lub Chaw Saib Xyuas Kev Nyab Xeeb   Tsim cov cai hais tias CRTs yuav tsum raug coj los tshwj xeeb   Ua dua tshiab   Cov chaw. Thaum lub Kaum Ib Hlis Ntuj xyoo 2002, lub EPA tau pib nyiaj txiag cov lag luam uas muab cov CRTs los ntawm   Qhov chaw pov tseg   Los yog   incineration . Cov koom haum ntxawg, hauv zos thiab thoob lub xeev, saib xyuas qhov pov tseg ntawm CRTs thiab lwm lub tshuab computer. [48]

Nyob hauv Tebchaws Europe, pov tseg ntawm CRT televisions thiab cov saib yog them los ntawm   WEEE tswj . [49]

Flicker [ edit ]

Main tsab xov xwm:   Flicker (screen)

Thaum qes   Hloov tshiab   (60 Hz   Thiab qis dua), lub sij hawm thaij ntawm daim duab yuav tsim tau ib lub tsho uas qee cov neeg pom tau yooj yim dua lwm tus, tshwj xeeb tshaj yog thaum pom nrog   peripheral . Flicker feem ntau cuam tshuam nrog CRT li cov TV tshaj plaws ntawm 50 Hz (PAL) los yog 60 Hz (NTSC), tab sis muaj qee tus 100 Hz PAL TV uas yog   flicker-free . Feem ntau tsuas yog cov ntsuas cua qis rau cov qis qis xwb, nrog rau ntau lub computer saib xyuas qhov tsawg kawg 75 Hz thiab siab kawg saib xyuas tau 100 Hz los yog ntau dua kom tshem tawm cov kev xav ntawm lub plab. [50]   Tsis yog lub computer CRTs los yog CRT rau   Sonar   Los yog   Radar   Tej zaum yuav muaj ntev   Persistence   Phosphor thiab yog li no flicker dawb. Yog tias qhov persistence ntev dhau ntawm ib qho video, tsiv cov duab yuav plooj.

High-zaus audible suab nrov [ edit ]

50 Hz / 60 Hz CRTs siv rau TV khiav lag luam nrog horizontal kev xa frequencies ntawm 15,734 Hz (rau   NTSC   Systems) los yog 15,625 Hz (rau   PAL   Systems). [51]   Cov kev frequencies no yog nyob rau theem siab   Tib neeg lub rooj sib hais   Thiab tsis lees paub rau ntau tus neeg; Txawm li cas los xij, qee cov neeg (tshwjxeeb yog cov menyuam yaus) yuav pom cov suab nrov ntawm lub siab nyob ze ntawm lub lag luam ua haujlwm CRT. [52]   Lub suab yog vim   Magnetostriction   Hauv cov hauv paus hlau sib nqus thiab lub caij nyoog ncig ntawm cov cua ntawm cov   flyback transformer .

Qhov teeb meem no tsis tshwm sim ntawm 100/120 Hz TVs thiab rau cov lus tsis yog CGA lub computer, vim lawv siv ntau dua horizontal scanning frequencies (22 kHz mus tshaj 100 kHz).

Implosion [ edit ]

Siab   Nqus tsev   Hauv iav-walled cathode ray tshav pub rau electron beams fly fly- tsis colliding ua molecules pa los yog lwm cov roj. Yog hais tias lub iav puas lawm, atmospheric siab tuaj yeem ua rau lub tshuab nqus tsev nqus mus rau hauv cov thooj phom sij uas ua rau sab hauv thiab tom qab ntawd tsuag tsuag ntawm txhua qhov kev qhia. Lub implosion zog yog proportional rau cov ntim evacuated ntawm lub CRT. Txawm hais tias niaj hnub cathode txoj hlua hluav taws xob siv hauv xov tooj cua thiab computer qhia tau   epoxy -bonded face-plates or other measures to prevent shattering of the envelope, CRTs must be handled carefully to avoid personal injury. [53]

Electric shock [ edit ]

Mus ceev cov electrons ntawm lub cathode mus rau qhov screen nrog txaus tshaj tawm, ib tug heev   High voltage   (EHT los yog ntxiv High Nro) yog yuav tsum tau, [54]   Los ntawm ob peb txhiab volts rau ib qho oscilloscope me me mus rau kaum ntawm kV rau ib qho loj screen xim TV. Qhov no muaj ntau zaus ntau tshaj qhov muaj hluav taws xob hauv tsev. Txawm tias tom qab lub hwj chim muab tua lawm, qee cov kab mob sib kis kab mob thiab CRT nws tus kheej yuav khaws tau tus nqi rau qee lub sijhawm.

Security kev txhawj xeeb [ edit ]

Hauv qab qee qhov teeb meem, qhov teeb liab tawm ntawm lub   electron phom , PP circuitry, thiab txuam thaiv ntawm ib tug CRT yuav tau yuav remotely thiab siv los sis dab tsi yog muaj nyob rau ntawm lub CRT siv ib tug txheej txheem uas hu   Van Eck phreaking . [55]   Tshwj xeeb   TEMPEST   Shielding mitigate no cov nyhuv. Tej tawg ntawm ib tug uas exploitable teeb liab, txawm li cas los, tshwm sim kuj nrog rau lwm cov zaub technologies [56]   Thiab nrog electronics feem ntau. [ Citation ntxiv ]

Recycling [ edit ]

Raws li   hluav taws xob pov tseg , CRTs yog xam tau tias yog ib lub yam hom rau nqa. [57]   CRTs muaj feem ntau cov hmoov txhuas thiab phosphors (tsis muaj phosphorus), ob qho tib si uas tsim nyog rau cov zaub. Muaj ntau lub chaw lag luam hauv Tebchaws Meskas uas them tus nqi tsawg tsawg los sau CRTs, ces pab txhawb lawv txoj haujlwm los ntawm kev muag cov tooj liab, xaim, thiab   luam Circuit Court laug cam . Lub   Teb Chaws Meskas Lub Chaw Saib Xyuas Kev Nyab Xeeb   (EPA) muaj xws li muab pov tseg CRT saib nyob rau hauv nws cov qeb ntawm "tej neeg hauv tsev neeg pov tseg" [58]   Tab sis suav tias CRTs tau npaj tseg rau kev sim kuaj khoom yog tias tsis muab pov tseg, speculatively accumulated, los yog sab laug tiv thaiv huab cua thiab lwm yam kev puas tsuaj.

Ua rau CRT iav raug muag kom raug muab tshem tawm mus rau lwm qhov CRTs, los yog tawg thiab siv hauv kev tsim kho. [59]

Saib kuj [ edit ]

·          Icon Electronics portal

Cov hauv paus ntawm cathode rays thiab paug hauv qhov qis-roj:

·          Cathode txoj sab ci

·          Nqus plua plav

Lub teeb zus ntawm cathode rays:

·          Cathodoluminescence

·          Crookes raj

·          Phosphor

·          Scintillation (physics)

Manipulating tus nqaj hlau electron:

·          Npau taws (yeeb yaj kiab)

·          Kab rov tav ploj

·          Vertical blanking interval

·          Deflection cuab khuam

·          Electron nqaj zauv

·          Electrostatic deflection

·          Electrostatic lens

·          Sib nqus deflection

·          Sib nqus lens

Thov CRT hauv ntau lub ntsiab-lub hom phiaj:

·          Analog TV

·          Analog telescopic # Displaying tus duab

·          Kev sib piv ntawm CRT, LCD, ntshav, thiab OLED

·          Sib piv ntawm kev siv tshuab

·          Lub computer saib

·          CRT projector

·          Image dissector

·          Monochrome saib

·          Monoscope

·          Oscilloscope

·          Oscilloscope # Cathode-txoj sab ci oscilloscope (CRO)

·          Overscan

·          Raster scan

·          Luam theej duab

Lwm yam phenomena:

·          Nrov nrov (video)

Keeb kwm kev nruj:

·          Direct-saib bistable cia tube

·          Vaj huam sib luag pav ca

·          Keeb kwm ntawm kev siv tshuab

·          Image dissector

·          LCD TV ,   LED-backlit LCD ,   LED zaub

·          Penetron

·          Deg-conduction electron-emitter zaub

·          Trinitron

Kev Nyab Xeeb thiab Kev Tiv Thaiv:

·          Saib lim

·          Cov duab cwj pwm txawv

·          TCO Daim Ntawv Tso Cai