CRT-monitor: description, waxyaalaha ugu muhiimsan ee qalabka

CRT-monitor - qalab, taas oo ku salaysan yahay tube ray cathode ah. technology waxa loo sameeyay 1897 by cilmiga Jarmal F. Brown. Markii hore waxaa la abuuray sida qalab gaar ah oo loogu talagalay lagu qiyaaso talantaalli ah ee hadda (oscilloscope).

CRT-monitor iyo design

element aasaasiga ah ee qalab this waa kinescope ah. Waxay ka kooban tahay tuubo hermetically laga shaabadeeyey laba galaas oo ka kaas oo hawada laga saaro (i.e., vacuum waxaa gudaha). Mid ka mid ah dhammaadka tuubada waa guri oo ballaadhan - waa shaashadda, oo tan kalena waxay - dheer oo dhuuban - waa qoorta. Kooxda hore ee gudaha tube la dahaarka leh kula Halabuurka phosphor ah (ku salaysan yttrium iyo erbium). element xigta waa qori electron CRT-monitor ah, kaas oo ka yar tallaabada ee duurka ku electrostatic baxo socodka electrons, oon sanam u muuqda shaashadda. Qurub Elementary dhex mari biruhu bir ah oo ka dhacay gudaha ee shaashadda galaas dahaarka leh dhibicyo phosphor mid ah midabo kala duwan. nidaamka darbo Gaarka ah waxay bixisaa hit a joogto ah dogobka garoonka shaashadda. nidaamyada Deflecting waxaa ka mid ah laba nooc: koore iyo toroidal. Nidaamka wuxuu ka kooban yahay inductors, meeleeyay qoorta kinescope ah.

element Next qeexaya CRT-monitor, jir block a iyo iskaanka line. Guntin Tani waa isha ugu muhiimsan ee qaylada kala duwan inta jeer qalliinka. Awoodda baabba'nay qanjidhada kuwan - mid ka mid ah arrimaha ugu waaweyn ee ay tahay in la tixgeliyo marka la qorshaynayo monitor CRT ah. xubin ka xigta waa modulator xoogga, taas oo si wadajir ah ula nidaamka dardar-shaqeeya on mabda'a ah ee farqiga iman kara. Sababo la qanjidhada kuwaas electrons helaan tamarta, qayb ka mid ah oo ku qaataan on luminescence of phosphor ah.

RGB-technology

Sida caadiga ah ee midabka CRT-monitor ka kooban yahay saddex qoryaha electron, iyo monochrome - mid ka mid ah. Waxay u dhigantaa qoriga aasaasiga ah midabo: cagaaran, oo cas oo buluug ah. Waxay isku darka abuuri karaan tiro aan la koobi karayn ah oo midabo iyo midabo kala. Si loo xakameeyo CRT loo baahan yahay ay gacanta ku elektarooniga, taas oo go'aan ka tayada kormeeraha. Farqiga in sida korantada, soo saaray by saarayaasha kala duwan, waa kala bixiyc ee go'aaminta farqiga u dhexeeya CRT-ilaaliyeyaal, inkastoo xaqiiqda ah in tube ray cathode ah iyaga oo ku waa isku mid. Sayidka, qoriga kasta shanqarta durdur in saamaysaa dhibic ka mid ah phosphor midabka kala duwan. dogobka electron midabka la mid ah waa in ay saamayn kaliya waxyaalaha aasaaska ah ee midab isku mid ah. Si aad si sax ah loo gaaro dogob tallaabadan la isticmaalayo maaskaro gaar ah, qaab dhismeedka of taas oo ku xiran nooca tube sawirka.

Repair CRT-ilaaliyeyaal

The ayna qalab CRT-aasaasiga ah waa cillad korontada. Inta badan tani waa ay sabab u tahay mawjadahaa awood. Haddii ay diido sahayda ay xoog u, ka dibna ay u badan tahay in ay dhacaan iyo dhaawac la socota si ay u modules kale, tusaale ahaan, xadgudub ku ah midab, image dhalanrog. Intaas waxaa sii dheer korodha, sababa failure of kormeerayaasha waxaa inta badan mashiin ay waxyeello (weerar) saamaynta ilaha shucaaca electromagnetic, boodhka monitor kulayl, da 'ah unugyada. heerkulka Violation waxay keeni kartaa failure of guddiga processing signal video iyo nidaamka imaging ah. Xadgudubka oolnimada iskaanka siman waxaa sabab u ah burburka ee wareeggeedii danab sare iyo TDKS. Mid ka mid ah sababaha ku xusan arrin taagan ciidda.