Photocell
Ib qho khoom siv uas pom lub teeb.Siv rau cov duab teeb pom kev zoo, tsis siv neeg lub teeb thaum tsaus ntuj thiab lwm yam kev siv lub teeb pom kev zoo, lub photocell nws txawv ntawm nws ob lub terminals raws li tus naj npawb ntawm photons (lub teeb) nws tau txais.Kuj hu ua "photodetector," "photoresistor" thiab "light dependent resistor" (LDR).
Lub photocell cov khoom siv semiconductor feem ntau yog cadmium sulfide (CdS), tab sis lwm yam tseem siv tau.Photocells thiab photodiodes yog siv rau kev siv zoo sib xws;Txawm li cas los xij, lub photocell dhau tam sim no bi-directionally, whereas lub photodiode yog unidirectional.
Photodiode
Lub teeb sensor (photodetector) uas tso cai rau tam sim no ntws hauv ib qho kev taw qhia ntawm ib sab mus rau lwm qhov thaum nws nqus photons (lub teeb).Lub teeb ntau dua, tam sim no ntau dua.Siv los ntes lub teeb hauv lub koob yees duab sensors, optical fibers thiab lwm yam kev siv lub teeb pom kev zoo, photodiode yog qhov txawv ntawm lub teeb emitting diode (saib LED).Photodiodes ntes lub teeb thiab cia hluav taws xob ntws;LEDs tau txais hluav taws xob thiab tawm lub teeb.
Solar Cells yog Photodiodes
Lub hnub ci hlwb yog photodiodes uas muaj tshuaj kho mob (doped) txawv dua li cov photodiode siv los hloov lossis relay.Thaum lub hnub ci hluav taws xob raug ntaus los ntawm lub teeb, lawv cov khoom siv silicon zoo siab rau lub xeev uas muaj hluav taws xob me me.Muaj ntau cov arrays ntawm lub hnub ci cell photodiodes yuav tsum tau siv zog rau lub tsev.
Phototransistor
Lub transistor uas siv lub teeb es tsis yog hluav taws xob ua rau cov hluav taws xob tam sim no ntws los ntawm ib sab mus rau lwm qhov.Nws yog siv nyob rau hauv ib tug ntau yam ntawm sensors uas ntes lub xub ntiag ntawm lub teeb.Phototransistors muab cov photodiode thiab transistor ua ke los tsim cov zis tam sim no ntau dua li photodiode ntawm nws tus kheej.
Photoelectric
Hloov photons rau hauv electrons.Thaum lub teeb yog beamed mus rau ib tug hlau, electrons raug tso tawm los ntawm nws cov atoms.Qhov siab dua lub teeb zaus, lub zog hluav taws xob tso tawm ntau dua.Photonic sensors ntawm txhua yam ua haujlwm ntawm txoj cai no, piv txwv li photocell, thiab photovoltaic cell yog ib qho khoom siv hluav taws xob.Lawv hnov lub teeb thiab ua rau muaj hluav taws xob ntws.
kev tsim kho
photocell muaj ib lub iav evacuated raj uas muaj ob electrodes emitter thiab collector.lub emitter yog zoo li tus nyob rau hauv daim ntawv ntawm ib tug semi-hollow lub tog raj kheej.nws ib txwm khaws cia ntawm qhov tsis zoo.lub collector yog nyob rau hauv daim ntawv ntawm ib tug hlau pas nrig thiab tsau nyob rau hauv lub axis ntawm lub semi-cylindrical emitter.tus collector yeej ib txwm khaws cia ntawm lub peev xwm zoo.lub iav raj yog haum rau ntawm lub hauv paus tsis yog xim hlau thiab cov pins yog muab rau ntawm lub hauv paus rau kev sib txuas sab nraud.
wokring
lub emitter txuas nrog lub davhlau ya nyob twg tsis zoo thiab lub collector txuas nrog lub davhlau ya nyob twg zoo ntawm lub roj teeb.hluav taws xob ntawm zaus ntau tshaj qhov pib zaus ntawm cov khoom ntawm emitter yog tsim teeb meem ntawm lub emitter.yees duab-emission tshwm sim.Diam duab-electrons yog attracted rau collector uas yog zoo wrt lub emitter yog li tam sim no ntws nyob rau hauv lub Circuit Court.Yog hais tias qhov kev siv ntawm qhov teeb meem hluav taws xob yog nce lub photoelectric tam sim no nce.
Peb lwm tus photocontrol daim ntawv thov teeb meem
Txoj hauj lwm ntawm lub photocell hloov yog txhawm rau txheeb xyuas theem ntawm lub teeb los ntawm lub hnub, thiab tom qab ntawd qhib lossis tawm cov khoom siv uas lawv tau xa mus.Cov thev naus laus zis no tuaj yeem siv tau ntau txoj hauv kev, tab sis ib qho piv txwv feem ntau yuav yog txoj kev teeb.Ua tsaug rau photocell sensors thiab keyboards, lawv txhua tus tuaj yeem qhib thiab tawm tau thiab ntawm nws tus kheej raws li hnub poob thiab hnub tuaj.Qhov no tuaj yeem yog txoj hauv kev zoo rau kev txuag hluav taws xob, muaj lub teeb pom kev ruaj ntseg tsis siv neeg lossis txawm tias yooj yim kom koj lub vaj teeb pom kev rau koj txoj hauv kev thaum hmo ntuj yam tsis tas yuav tig rau.Muaj ntau ntau txoj hauv kev los siv photocells rau sab nraum zoov teeb, rau thaj chaw, kev lag luam lossis kev lag luam.Koj tsuas yog yuav tsum muaj ib lub photocell hloov wired rau hauv ib lub voj voog kom tswj tau tag nrho cov fixtures, yog li tsis tas yuav yuav ib lub teeb rau ib lub teeb.
Muaj ntau ntau hom photocell hloov thiab tswj, txhua yam zoo dua rau cov xwm txheej sib txawv thiab ntau yam perks.Qhov yooj yim hloov mus rau mount yuav yog lub qia mounting photocells.Cov kev tswj kev sib tw kuj tseem yooj yim rau nruab tab sis muaj kev hloov pauv ntau dua.Twist-Lock photocontrols yog ib qho nyuaj rau kev teeb tsa, txawm li cas los xij lawv muaj zog ntau dua thiab tsim los tiv thaiv kev vibrations thiab kev cuam tshuam me me yam tsis muaj kev tawg lossis ua rau muaj kev cuam tshuam hauv Circuit Court.Button photocells zoo haum rau sab nraum zoov teeb, tsim kom yooj yim ncej mounted.
Nrhiav tau cov ntaub ntawv qhov chaw:
1. www.pcmag.com/encyclopedia/term/photocell
2. lightbulbsurplus.com/parts-components/photocell/
3. learn.adafruit.com/photocells
4. thefactfactor.com/facts/pure_science/physics/photoelectric-cell/4896/
5. www.elprocus.com/phototransistor-basics-circuit-diagram-advantages-applications/
Post lub sij hawm: Lub Xya hli ntuj-16-2021