CRT-saib: hauj lwm, lub ntsiab ntsiab ntawm lub ntaus ntawv

CRT-saib - ib tug ntaus ntawv, uas yog raws li nyob rau hauv ib tug cathode txoj sab ci raj. Qhov no technology yog tsim nyob rau hauv 1897 los ntawm German paub txog F. Brown. Chiv nws tau tsim raws li ib tug tshwj xeeb kev ntsuas tsim ntsuas alternating tam sim no (oscilloscope).

CRT-saib thiab nws tsim

Cov yooj yim caij ntawm no ntaus ntawv yog ib tug kinescope. Nws muaj ib tug hermetically kaw iav raj los ntawm cov huab cua yog muab tshem tawm (i.e., lub tshuab nqus tsev hauv nws). Ib kawg ntawm tus raj yog tiaj tus thiab dav - yog lub screen, thiab lwm yam - ntev thiab nqaim - nws yog lub caj dab. Lub pem hauv ntej sab ntawm lub sab hauv ntawm lub raj yog coated nrog ib tug phosphor muaj pes tsawg leeg (raws li nyob rau hauv yttrium thiab erbium). Cov tom ntej no lub caij yog ib tug CRT-saib electron phom, los ntawm uas nyob rau hauv qhov kev txiav txim ntawm lub electrostatic teb yoojyim lub khiav ntawm electrons, li no ib tug duab zoo nkaus li nyob rau hauv lub screen. Elementary hais dhau los ntawm ib tug hlau grille thiab ntaus hauv lub khob screen loj nrog phosphor dots ntawm cov xim txawv. Tshwj xeeb deflection system muab ib tug zoo ib yam hit lub beam ntawm qhov screen teb. Deflecting systems yog ob hom: eeb thiab toroidal. Lub system muaj inductors, muab tso rau hauv lub caj dab ntawm lub kinescope.

Tom ntej no lub caij defining CRT-saib, ib ntu ncej thiab kab PP. Qhov no node yog qhov tseem ceeb ntawm cov suab nrov nyob rau hauv lub khiav hauj lwm ntau zaus. Lub hwj chim noj los ntawm cov ntshav - ib yam ntawm cov loj yam tseem ceeb uas yuav tsum raug xam tias yog thaum tsim ib CRT saib. Cov tom ntej no neeg yog cov kev siv modulator, uas ua ke nrog rau cov accelerating system ua hauj lwm nyob rau hauv lub hauv paus ntsiab lus ntawm tej sib txawv. Vim cov ntshav electrons tau zog, ib feem ntawm uas siv rau luminescence ntawm lub phosphor.

RGB-technology

Feem ntau cov xim CRT-saib muaj peb electron phom, thiab monochrome - ib tug. Cov xov phom thawj xim: ntsuab, liab thiab xiav. Lawv ua ke yuav tsim ib txhis tus naj npawb ntawm ntxoov thiab xim. Yuav kom tswj cov CRT yuav tsum tau tswj electronics, uas txiav txim qhov zoo tshaj ntawm tus saib. Uas txawv li electronics, ua los ntawm ntau yam manufacturers, yog lub kauj rau kev txiav txim rau qhov sib txawv ntawm CRT-saib, txawm lub fact tias lub cathode txoj sab ci raj nyob rau hauv lawv yog tib yam. Yog li, txhua rab phom emits ib tug kwj uas influences point ntawm txawv xim phosphor. Lub electron nqaj ntawm tib xim yuav tsum tau tsuas muaj feem xyuam rau lub ntsiab ntawm tib xim. Yuav kom ua tau raws nraim qhov kev txiav txim beam siv ib tug tshwj xeeb daim npog qhov ncauj, cov qauv ntawm cov uas nyob ntawm lub hom daim duab raj.

Kho CRT-saib

Cov yooj yim CRT-ntaus ntawv malfunctions yog fais fab mov malfunction. Feem ntau cov feem ntau qhov no yog vim los muaj hwj chim surges. Yog hais tias nws tsis lub hwj huam mov, ces cov yuav tshwm sim thiab cov accompanying kev puas tsuaj rau lwm modules, piv txwv li, ib tug ua txhaum ntawm cov xim, cov duab distortion. Tsis tas li ntawd surges, ua rau tsis ua hauj lwm ntawm cov saib feem ntau mechanically puas (ntaus) tej yam uas qhov chaw ntawm electromagnetic tawg, plua tshauv saib overheating, laus hlwb. Kev ua txhaum kub yuav ua tau kom ua hauj lwm ntawm cov kev yees duab teeb liab ua board thiab cov qauv system. Kev ua txhaum kab rov tav PP efficiency yog vim lub neej puas nyob rau hauv lub high voltage circuits thiab TDKS. Ib tug ntawm cov yog vim li cas hais phenomenon sawv hmoov av.