Ndi Cathode Ray chubu Kodi

Mwina palibe munthu ngati ameneyu adzakhala mu moyo wake anakumana ndi zipangizo, kamangidwe ka womwenso uli cathode ray chubu (kapena CRT). Tsopano njira zofanana zikukangalika m'malo mwa anzawo zambiri zamakono zochokera kusonyezedwa madzi galasi (LCD). Komabe, pali zingapo chimene cathode ray chubu akadali singasiyanitsidwe. Mwachitsanzo, mkulu-mwatsatanetsatane oscilloscopes LCD sangathe ntchito. Komabe, chinthu chimodzi momveka bwino - patsogolo mfundo anasonyeza chipangizo adzakhala mapeto okwana kulephera kwa CRT lapansi. Ndi nkhani ya nthawi.

Cathode ray chubu: mbiri ya yatsoka

The anatulukira akhoza kuganiza Yu Plucker, umene chaka 1859, kuphunzira khalidwe la zitsulo ndi zotsatira zosiyanasiyana zakunja chodabwitsa ndi anapeza cheza (umuna) particles pulayimale - ma elekitironi. Anaumba tinthu matabwa ankatchedwa cheza cathode. Iye anafotokoza kuti maonekedwe a kuonekera umuna zinthu zina (phosphor) anakumana ndi matabwa izi elekitironi. Modern CRT amatha kulenga fano chifukwa atulukira awiriwa.

Patatha zaka 20, wapezeka empirically kuti zoyenda malangizo a ma elekitironi panamveka akhoza lizilamuliridwa ndi minda kunja maginito. Izi mosavuta anafotokoza ngati ife kumbukirani kuti zoipa mlandu zonyamulira yodziwika ndi anasamutsa mphamvu ya maginito ndi magetsi.

Mu 1895, Karl F. Braun woyengedwa kasamalidwe mu chubu, motero anatha kusintha vekitala wa tinthu otaya malangizo si munda wa dongosolo, komanso galasi wapadera kuti akhoza zimayenda wotsegulira ziyembekezo zatsopano ntchito anatulukira lapansi. Mu 1903 godu Venelt anaika mkati elekitirodi chubu cathode mu mawonekedwe a yamphamvu ndi kukhala kotheka kulamulira mphamvu ya kamwazi panamveka.

Mu 1905, Einstein anakonza anthu aone kuti pali chifukwa kuwerengetsa zotsatira photoelectric, ndipo patapita zaka 6 wasonyeza akuthamanga chithunzi kutengerapo chipangizo chapatali. Mtengo unali m'manja ndi maginito, ndi mlandu capacitor phindu kuwala.

Pa chiyambi cha ulimi wa zitsanzo woyamba wa makampani CRT kuti sanali wokonzeka kulenga zowonetsera ndi akuluakulu opendekera, kotero kubukitsa magalasi ntchito ngati kukondera a.

Zida cathode ray chubu

Popeza chipangizo chasinthidwa, koma kusintha ndi zamoyo zinachita mu chilengedwe, monga palibe wachibadidwe latsopano mu njira ya ntchito kuwonjezera.

Galasi thupi imayamba ndi conical chubu kutambasuka kupanga chophimba. Zipangizo mtundu image, pamwamba mkati TACHIMATA ndi sitepe ena mitundu itatu phosphors (Red, Green, Blue), kupereka luminescence mtundu pa elekitironi mtengo akulowa. Choncho, pali atatu cathode (mfuti). Pofuna kulimira ndi ma elekitironi defocus ndi kupereka ankafunila mtengo panopa kulowa mfundo anakhumba pa nsalu yotchinga pakati pa cathode ndi phosphor wosanjikiza dongosolo anakonza zitsulo zitsulo - chigoba. Iwo angayerekezedwe ndi osindikizira, ndi kudula onse zosafunika.

Pa pamwamba pa mkangano cathode elekitironi umuna ayamba. Iwo amathamangira kwa anode (elekitirodi ndi mlandu zabwino), olumikizidwa kwa gawo conical a chubu. Komanso, matabwa kwambiri za koyilo wapadera ndi kugwera mu munda wa dongosolo kuchimwa. Adapyola kabati kugwa pa mfundo anakhumba pa zenera, kuchititsa kutembenuka a mphamvu kayendedwe mu kuwala.

makompyuta

Oyang'anira ndi cathode-ray chubu ankagwiritsa ntchito mu makompyuta. Kuphweka kulengedwa, mkulu kudalirika mtundu zolondola, ndipo palibe kuchedwa (yemweyo millisecond ayankhe masanjidwewo LCD) - uyu ndi mwayi kwambiri. Koma posachedwapa, monga tanenera kale, CRT ndi osamukira kwambiri ndalama ndipo ergonomic LCD oyang'anira.