Lub simplest semiconductor component-lub diode -performs ntau yam hauj lwm pab cuam tshuam txog nws cov hom phiaj ntawm kev tswj cov kev coj ua ntawm khiav ntawm hluav taws xob tam sim no. Diodes cia tam sim no ntws los ntawm lawv nyob rau hauv ib txoj kev xwb.
Cov diodes txig zoo li yuav qhib circuits nrog lub qhov tsis muaj qhov tsis zoo thiab lawv zoo li cov circuits luv li. Tab sis vim cov xaim lees tau qee qhov kev cuam tshuam, lawv txoj kev sib raug ntawm qhov tam sim no yog nonlinear.
Raws li xws li, koj yuav xav nrog ib tug diode datasheet mus pom ib lub teeb ntawm lub nkhaus ntawm kev muab diode tus pem hauv ntej voltage txheeb ze rau nws tam sim no, kom koj tuaj yeem diode txoj kev rau koj qhov project.
Daim ntawv thov ntawm Diodes
Txawm hais tias yog ob yam yooj yim ntawm semiconductor pab kiag li lawm, cov diodes yog qhov tseem ceeb hauv cov niaj hnub electronics. Qee qhov kev siv cov diodes muaj xws li:
- Rectifying ib voltage, xws li xa AC rau DC voltages
- Kev tawm ntawm cov khoom tawm
- Tswj qhov luaj li cas ntawm lub teeb liab
- Nws cov teeb meem
Kev Siv Hwj Huam
Ib daim ntawv thov diodes tseem ceeb yog hloov AC zog rau DC zog. Ib qho diode los yog plaub lub voos diav siv tau los hloov ua kom muaj zog 110V rau DC los ntawm kev ua ib nrab hnub (ib qho cim ib qho) los yog ib lub voj voos (plaub plig). Ib qho diode ua qhov no los ntawm qhov tsuas yog ib nrab ntawm cov AC waveform taug kev los ntawm nws. Thaum siv qhov voltage mem tes siv los them tus nqi hluav taws xob, cov zis hluav taws xob zoo nkaus li yog ib qho kev ruaj khov DC nrog qhov muaj qhov me me hluav taws xob. Siv cov yeeb-yaj-kiab uas ua tiav txhua lub sijhawm ua haujlwm ntau dua ntawm AC pulses kom ob leeg zoo thiab tsis zoo los ntawm cov tswv yim tsis zoo ntawm cov tswv yim tsis muaj zog, pom tau tias tsuas yog qhov muaj suab thaj, cov khauj khaus ntawm cov tswv yim poob mus rau lub capacitor, uas yuav pab kom nws them thiab xa ib qho kev ruaj khov ruaj khov.
Diodes thiab capacitors tseem siv tau los ua kom muaj ntau hom voltage multipliers siv ib qho AC voltage me me thiab muab nws ua kom muaj hluav taws xob siab tshaj tawm. Ob qhov AC thiab DC cov khoom siv tau tsim nyog siv txoj cai ntawm cov capacitors thiab diodes.
Demodulation ntawm Pib Tshaj Tawm
Qhov feem ntau siv cov duab diav yog los tshem tawm cov khoom tsis zoo ntawm AC teeb liab. Vim tias qhov tsis zoo ntawm tus AC waveform feem ntau zoo tib yam rau qhov zoo ib nrab, cov lus qhia me me yog poob zoo hauv cov txheej txheem ntawm stripping nws mus, ua rau ntau lub teeb meem ua.
Qhov teeb meem tshwm sim hauv kev siv hluav taws xob feem ntau yog siv hauv xov tooj cua ua ib feem ntawm qhov kev lim dej kom pab tawm cov xov tooj cua ntawm lub cab kuj.
Tshaj Tawm Ntawm Qhov Tiv Thaiv
Diodes kuj ua tau zoo raws li kev tiv thaiv rau cov cuab yeej hluav taws xob. Thaum siv raws li kev tiv thaiv hluav taws xob, cov diodes yog tsis yog cov tsis ua haujlwm nyob rau hauv kev khiav hauj lwm tab sis tam sim ntawd luv luv txhua qhov siab-voltage spike rau hauv av uas nws tsis tuaj yeem ua rau muaj kev cuam tshuam cov khoom siv hluav taws xob. Cov cim tshwj xeeb uas hu ua cov cim hluav taws xob uas muaj lub npe hu ua hluav taws xob tiv thaiv tau hluav taws xob thiab muaj peev xwm ua haujlwm loj heev rau cov sij hawm luv luv, cov yam ntxwv ntawm qhov hluav taws xob los sis hluav taws xob, uas feem ntau yuav ua kev puas tsuaj thiab txo lub neej ntawm ib qho khoom hluav taws xob.
Ib yam li ntawd, ib qho diode tuaj yeem tswj cov kev taw hluav taws xob los ntawm kev ua ib qho khoom siv los yog tus cwj pwm-lub tshwj xeeb lub hau kev uas muaj qhov hluav taws xob uas dhau los ntawm nws ntawm ib qho chaw.
Kev Ruaj Ntseg Tam Sim No
Daim ntawv sau qhia cov diodes yog coj ncaj qha mus thiab xyuas kom tseeb tias nws tsuas yog ntws mus raws li kev coj ua. Ib cheeb tsam uas tam sim no muaj peev xwm ntawm txoj kev siv lub diode siv rau qhov txiaj ntsig yog qhov hloov ntawm lub hwj huam los ntawm lub hwj huam kom khiav tawm ntawm lub roj teeb. Thaum ib lub cuab yeej txuas thiab them nyiaj-piv txwv, ib lub xov tooj ntawm tes los yog lub hwj huam ntawm lub ncoo tsis-lub ntaus ntawv yuav tsum kos cov hluav taws xob nkaus xwb los ntawm cov hluav taws xob sab nraud thiab tsis yog lub roj teeb, thiab thaum lub cuab yeej txuas rau hauv lub roj teeb yuav tsum kos duab thiab rov qab ua dua tshiab. Thaum lub hwj chim muab tshem tawm, lub roj teeb yuav tsum siv lub hwj chim kom tsis txhob cuam tshuam los ntawm tus neeg siv.
Ib qho piv txwv zoo ntawm txoj kev tig kauj yog tam sim no los ntawm kev tiv thaiv tam sim no. Xav txog, piv txwv, koj lub tsheb. Thaum koj lub roj teeb tuag thiab ib tus neeg caij passerby muaj kev pabcuam nrog cov kab ntswj jumper, yog tias koj sib tov ntawm cov kab liab thiab dub cab koj yuav tsis kib koj lub xov tooj hluav taws xob vim cov diodes nyob ib sab rau lub roj teeb thaiv qhov tsis ncaj ncees lawm.
Cov Rooj Vag Logic
Cov computers khiav lag luam nyob rau hauv binary-ib qho tsis kawg kev hiav txwv ntawm zeroes thiab ones. Cov kev txiav txim binary hauv kev xam yog raws li cov rooj vag log ntawm cov diodes uas tswj tau qhov kev hloov yog nyob ntawm ("1") lossis tawm ("0"). Txawm hais tias pua pua lab ntawm cov duab pom hauv cov txheej txheem niaj hnub no, lawv ua haujlwm zoo ib yam li cov duab uas koj yuav tom khw electronics-ntau me me.
Diodes thiab teeb
Ib qho teeb nyem LED yog lub teeb khoos nkaus xwb uas nws lub qhov muag pom tau los ntawm lub teeb tawm ntawm lub teeb tawm. Nyob rau hauv muaj qhov zoo voltage, LEDs glow.
Ib qho duab, ntawm qhov sib txawv, lees txais lub teeb los ntawm ib lub collector (zoo li lub hnub ci me me vaj huam sib luag) thiab hloov cov teeb ci mus rau ib qho me me tam sim no.