Dab tsi yog diode?

Ib lub diode yog ob lub davhlau ya nyob twg hluav taws xob, txwv qhov ntws tam sim no nyob rau hauv ib qho kev taw qhia thiab tso cai rau nws ntws ywj siab nyob rau hauv opposite direction. Nws muaj ntau yam siv nyob rau hauv hluav taws xob circuits thiab yuav siv tau los tsim rectifiers, inverters, thiab generators.

Hauv tsab xov xwm no, peb yuav coj saib Dab tsi yog diode thiab nws ua haujlwm li cas. Peb kuj tseem yuav saib qee qhov ntawm nws cov kev siv hauv hluav taws xob circuits. Yog li cia peb pib!

Lub diode ua haujlwm li cas?

Lub diode yog ib qho khoom siv hluav taws xob uas nws tso cai rau tam sim no yuav tsum ntws mus rau hauv ib qho kev taw qhia. Lawv feem ntau pom nyob rau hauv hluav taws xob circuits. Lawv ua haujlwm raws li cov khoom siv semiconductor uas lawv tau tsim, uas tuaj yeem yog N-hom lossis P-hom. Yog tias lub diode yog N-hom, nws tsuas yog dhau tam sim no thaum qhov hluav taws xob siv nyob rau hauv tib txoj kev raws li lub xub ntawm lub diode, thaum P-hom diodes yuav tsuas dhau tam sim no thaum voltage yog thov nyob rau hauv lub opposite direction ntawm nws xub.

Cov khoom siv semiconductor tso cai rau tam sim no ntws, tsimdepletion tsam', qhov no yog thaj av uas txwv tsis pub electrons. Tom qab siv hluav taws xob, thaj tsam depletion ncav cuag ob qhov kawg ntawm lub diode thiab tso cai rau tam sim no ntws los ntawm nws. Cov txheej txheem no hu ua "pem hauv ntej bias".

Yog hais tias voltage yog siv rau hloov tshiab Cov khoom siv semiconductor, thim rov qab. Qhov no yuav ua rau thaj tsam depletion txuas ntxiv los ntawm ib qho kawg ntawm lub davhlau ya nyob twg thiab nres qhov tam sim no los ntawm kev ntws. Qhov no yog vim hais tias yog qhov hluav taws xob tau siv nyob rau tib txoj kev raws li tus xub ntawm P-hom semiconductor, P-hom semiconductor yuav ua zoo li N-hom vim nws yuav cia cov hluav taws xob txav mus rau qhov sib txawv ntawm nws xub.

Diode tam sim no ntws

Dab tsi yog diodes siv rau?

Diodes yog siv rau hloov direct tam sim no rau alternating tam sim no, thaum thaiv qhov rov qab conduction ntawm hluav taws xob nqi. Cov khoom tseem ceeb no tuaj yeem pom hauv dimmers, hluav taws xob motors, thiab hnub ci vaj huam sib luag.

Diodes yog siv nyob rau hauv computers rau tiv thaiv computer hluav taws xob Cheebtsam los ntawm kev puas tsuaj vim lub hwj chim surges. Lawv txo lossis thaiv qhov hluav taws xob ntau dhau ntawm qhov xav tau los ntawm lub tshuab. Nws kuj tseem txo tau lub khoos phis tawj siv hluav taws xob, txuag lub zog thiab txo cov cua sov tsim tawm hauv lub cuab yeej. Diodes yog siv rau hauv cov khoom siv siab kawg xws li qhov cub, tshuab ntxhua khaub ncaws, microwave ncu thiab tshuab ntxhua khaub ncaws. Lawv tau siv rau hauv cov khoom siv no los tiv thaiv kev puas tsuaj vim lub hwj chim surges los ntawm lub hwj chim tsis ua hauj lwm.

Kev siv cov diodes

• kho
• Zoo li tus hloov
• Source Isolation Circuit
• Raws li kev siv voltage
• Zaus tov khoom
• Rov qab tiv thaiv tam sim no
• Rov qab polarity tiv thaiv
• Kev tiv thaiv Surge
• AM lub hnab ntawv ntes lossis demodulator (diode detector)
• Zoo li lub teeb ci
• Nyob rau hauv qhov zoo kub sensor Circuit Court
• Nyob rau hauv lub teeb sensor Circuit Court
• Hnub ci roj teeb lossis photovoltaic roj teeb
• Zoo li clipper
• Zoo li tus tuav

Keeb kwm ntawm lub diode

Lo lus "diode" los ntawm Греческий lo lus "diodous" los yog "diodos". Lub hom phiaj ntawm lub diode yog tso cai rau hluav taws xob khiav hauv ib qho kev taw qhia nkaus xwb. Ib lub diode tuaj yeem hu ua hluav taws xob valve.

Tau pom Henry Joseph Round los ntawm nws qhov kev sim nrog hluav taws xob hauv xyoo 1884. Cov kev sim no tau ua los ntawm kev siv lub tshuab nqus tsev iav raj, sab hauv uas muaj hlau electrodes ntawm ob qho kawg. Lub cathode muaj lub phaj nrog tus nqi zoo thiab lub anode muaj lub phaj nrog tus nqi tsis zoo. Thaum tam sim no dhau los ntawm lub raj, nws yuav teeb, qhia tias lub zog tau ntws los ntawm lub voj voog.

Leej twg invented lub diode

Txawm hais tias thawj semiconductor diode tau tsim nyob rau xyoo 1906 los ntawm John A. Fleming, nws tau txais txiaj ntsig rau William Henry Price thiab Arthur Schuster rau nws tus kheej tsim lub cuab yeej hauv xyoo 1907.

William Henry Preece thiab Arthur Schuster

Diode hom

• Me teeb liab diode
• Loj teeb liab diode
• Stabilitron
• Lub teeb emitting diode (LED)
• DC Diodes
• Schottky diode
• Shockley Diode
• Kauj ruam rov qab diodes
• qhov diode
• Varactor diode
• laser diode
• Transient suppression diode
• Kub doped diodes
• Super barrier diodes
• Peltier diode
• siv lead ua diode
• Avalanche Diode
• Silicon Controlled Rectifier
• Lub tshuab nqus tsev diodes
• PIN diode
• taw tes ntawm kev sib cuag
• Diode Hanna

Me teeb liab diode

Lub teeb liab me me diode yog cov khoom siv hluav taws xob semiconductor uas muaj peev xwm hloov tau sai thiab tsis tshua muaj hluav taws xob poob qis. Nws muab kev tiv thaiv siab tiv thaiv kev puas tsuaj vim electrostatic paug.

Loj teeb liab diode

Lub teeb liab diode loj yog ib hom diode uas xa cov teeb liab ntawm lub zog siab dua li lub teeb liab me me diode. Lub teeb liab loj diode feem ntau yog siv los hloov AC rau DC. Lub teeb liab diode loj yuav xa cov teeb liab uas tsis muaj hluav taws xob poob thiab pheej yig dua li electrolytic capacitor.

Lub decoupling capacitor feem ntau yog siv ua ke nrog lub teeb liab loj diode. Kev siv cov cuab yeej no cuam tshuam rau lub sijhawm teb cov lus teb ntawm lub voj voog. Lub decoupling capacitor pab txo qhov kev hloov pauv voltage tshwm sim los ntawm kev hloov pauv impedance.

Stabilitron

Lub Zener diode yog ib hom tshwj xeeb uas tsuas yog ua hluav taws xob hauv cheeb tsam ncaj qha hauv qab qhov hluav taws xob ncaj qha poob. Qhov no txhais tau hais tias thaum ib lub davhlau ya nyob twg ntawm ib lub zener diode yog energized, nws tso cai rau tam sim no txav los ntawm lwm lub davhlau ya nyob twg mus rau lub energized davhlau ya nyob twg. Nws yog ib qho tseem ceeb uas cov cuab yeej no siv tau zoo thiab yog hauv av, txwv tsis pub nws yuav ua rau koj lub voj voog puas tas mus li. Nws tseem yog ib qho tseem ceeb uas cov cuab yeej no siv sab nraum zoov, vim nws yuav ua tsis tiav yog tias muab tso rau hauv qhov chaw ntub dej.

Thaum txaus tam sim no siv rau zener diode, ib qho hluav taws xob poob yog tsim. Yog hais tias qhov hluav taws xob no nce mus txog lossis tshaj qhov tawg ntawm lub tshuab, ces nws tso cai rau tam sim no ntws los ntawm ib lub davhlau ya nyob twg.

Lub teeb emitting diode (LED)

Lub teeb emitting diode (LED) yog tsim los ntawm cov khoom siv hluav taws xob semiconductor uas tawm lub teeb thaum muaj cov hluav taws xob txaus dhau los ntawm nws. Ib qho ntawm cov khoom tseem ceeb tshaj plaws ntawm LEDs yog tias lawv hloov hluav taws xob hluav taws xob rau hauv lub zog kho qhov muag tau zoo heev. LEDs kuj tseem siv tau los ua qhov taw qhia teeb qhia lub hom phiaj ntawm cov khoom siv hluav taws xob xws li khoos phis tawj, moos, xov tooj cua, TV, thiab lwm yam.

LED yog ib qho piv txwv tseem ceeb ntawm kev txhim kho microchip thev naus laus zis thiab tau ua kom muaj kev hloov pauv tseem ceeb hauv thaj chaw teeb pom kev zoo. LEDs siv tsawg kawg yog ob txheej txheej semiconductor los tsim lub teeb, ib qho pn hlws ris los tsim cov nqa khoom (electrons thiab qhov), uas yog tom qab ntawd xa mus rau sab nraud ntawm "barrier" txheej uas ntes qhov ntawm ib sab thiab electrons ntawm lwm qhov. . Lub zog ntawm cov neeg nqa khoom ntim tau rov ua dua hauv "resonance" hu ua electroluminescence.

LED tau suav hais tias yog hom teeb pom kev zoo vim nws tawm me ntsis cua sov nrog rau nws lub teeb. Nws muaj lub neej ntev dua li cov roj teeb incandescent, uas tuaj yeem kav ntev txog 60 lub sijhawm ntev dua, muaj lub teeb pom kev zoo dua thiab tso tawm cov pa phem tsawg dua li cov teeb fluorescent.

Qhov zoo tshaj plaws ntawm LEDs yog qhov tseeb tias lawv xav tau lub zog me me los ua haujlwm, nyob ntawm seb hom LED. Tam sim no nws muaj peev xwm siv LEDs nrog cov khoom siv hluav taws xob xws li lub hnub ci hlwb mus rau cov roj teeb thiab txawm tias hloov pauv tam sim no (AC).

Muaj ntau ntau hom LEDs thiab lawv tuaj nyob rau hauv ntau yam xim xws li liab, txiv kab ntxwv, daj, ntsuab, xiav, dawb, thiab lwm yam. Niaj hnub no, LEDs muaj nyob nrog lub luminous flux ntawm 10 mus rau 100 lumens ib watt (lm / W), uas yog yuav luag tib yam li cov pa taws qhov chaw.

DC Diodes

Ib qho tam sim no diode, lossis CCD, yog hom hluav taws xob tswj hluav taws xob rau cov khoom siv hluav taws xob. Lub luag haujlwm tseem ceeb ntawm CCD yog txhawm rau txo qhov tso zis hluav taws xob poob thiab txhim kho qhov muaj zog tiv thaiv hluav taws xob los ntawm kev txo nws cov kev hloov pauv thaum lub load hloov. CCD kuj tseem siv tau los kho DC input fais fab theem thiab tswj DC qib ntawm cov khoom tso tawm.

Schottky diode

Schottky diodes tseem hu ua kub cab kuj diodes.

Lub Schottky diode tau tsim los ntawm Dr. Walter Schottky hauv xyoo 1926. Lub tswv yim ntawm Schottky diode tau tso cai rau peb siv LEDs (lub teeb emitting diodes) raws li cov teeb liab txhim khu kev qha.

Lub diode muaj txiaj ntsig zoo heev thaum siv hauv cov khoom siv hluav taws xob ntau. Schottky diode feem ntau muaj peb yam; P, N thiab hlau-semiconductor hlws ris. Tus tsim ntawm cov cuab yeej no yog xws li qhov kev hloov pauv ntse yog tsim nyob rau hauv cov khoom semiconductor. Qhov no tso cai rau cov neeg nqa khoom hloov pauv ntawm semiconductor mus rau hlau. Nyob rau hauv lem, qhov no yuav pab kom txo tau lub pem hauv ntej voltage, uas nyob rau hauv lem yuav txo tau lub hwj chim poob thiab tsub kom lub switching ceev ntawm cov cuab yeej siv Schottky diodes los ntawm ib tug loj heev margin.

Shockley Diode

Shockley diode yog ib qho khoom siv semiconductor nrog asymmetric txheej txheem ntawm electrodes. Lub diode yuav ua tam sim no nyob rau hauv ib qho kev taw qhia thiab ntau tsawg dua yog tias lub polarity thim rov qab. Yog hais tias ib qho hluav taws xob sab nraud raug tswj xyuas thoob plaws Shockley diode, ces nws yuav maj mam mus rau pem hauv ntej-bias raws li cov ntaub ntawv siv hluav taws xob nce, mus txog rau lub ntsiab lus hu ua "cut-off voltage" uas tsis muaj txiaj ntsig tam sim no raws li tag nrho cov electrons recombine nrog lub qhov. . Tshaj li qhov txiav tawm hluav taws xob ntawm cov duab sawv cev ntawm cov yam ntxwv tam sim no-voltage, muaj thaj tsam ntawm qhov tsis zoo. Lub Shockley yuav ua raws li amplifier nrog qhov tsis zoo kuj tseem ceeb hauv qhov ntau.

Shockley txoj haujlwm tuaj yeem nkag siab zoo tshaj plaws los ntawm kev tawg mus rau hauv peb qhov chaw hu ua cheeb tsam, tam sim no nyob rau hauv qhov kev taw qhia rov qab los ntawm qab mus rau sab saum toj yog 0, 1 thiab 2 raws.

Nyob rau hauv cheeb tsam 1, thaum muaj qhov zoo voltage yog thov rau pem hauv ntej bias, electrons diffuse mus rau hauv n-hom semiconductor los ntawm p-hom khoom, qhov twg ib tug "depletion zone" yog tsim los ntawm kev hloov ntawm feem ntau cov cab kuj. Lub cheeb tsam depletion yog thaj tsam uas cov cab kuj raug tshem tawm thaum siv hluav taws xob. Lub cheeb tsam depletion nyob ib ncig ntawm pn hlws ris tiv thaiv tam sim no los ntawm kev ntws mus rau pem hauv ntej ntawm lub unidirectional ntaus ntawv.

Thaum cov hluav taws xob nkag mus rau n-sab los ntawm p-hom sab, ib qho "depletion zone" yog tsim nyob rau hauv kev hloov ntawm hauv qab mus rau sab saum toj mus txog rau thaum lub qhov tam sim no txoj kev raug thaiv. Qhov txav ntawm sab saum toj mus rau hauv qab recombine nrog electrons txav los ntawm hauv qab mus rau sab saum toj. Ntawd yog, nruab nrab ntawm thaj chaw depletion ntawm cov khoom siv hluav taws xob thiab cov valence band, ib qho "recombination zone" tshwm, uas tiv thaiv qhov txuas ntxiv ntawm cov neeg nqa khoom tseem ceeb los ntawm Shockley diode.

Tam sim no ntws tam sim no tswj los ntawm ib tus neeg nqa khoom, uas yog cov neeg nqa khoom tsawg, piv txwv li cov khoom siv hluav taws xob hauv qhov no rau ib qho n-hom semiconductor thiab qhov rau cov khoom siv p-hom. Yog li peb tuaj yeem hais tias ntawm no qhov ntws ntawm tam sim no yog tswj los ntawm cov neeg nqa khoom feem ntau (qhov thiab cov hluav taws xob) thiab qhov ntws ntawm tam sim no yog ywj siab ntawm qhov siv hluav taws xob ntev npaum li muaj cov neeg nqa khoom txaus txaus los ua.

Hauv cheeb tsam 2, cov khoom siv hluav taws xob tso tawm los ntawm thaj chaw depletion recombine nrog qhov nyob rau sab nraud thiab tsim cov neeg nqa khoom tshiab tshiab (electrons hauv cov khoom siv p-hom rau n-hom semiconductor). Thaum cov qhov no nkag mus rau thaj tsam depletion, lawv ua tiav txoj hauv kev tam sim no los ntawm Shockley diode.

Hauv cheeb tsam 3, thaum qhov hluav taws xob sab nraud tau thov rau kev thim rov qab, thaj chaw them nqi lossis thaj chaw depletion tshwm nyob rau hauv kev sib tshuam, suav nrog cov neeg nqa khoom feem ntau thiab cov neeg tsawg. Cov khub electron-qhov sib cais vim qhov kev thov ntawm qhov hluav taws xob hla lawv, uas ua rau muaj kev cuam tshuam tam sim no los ntawm Shockley. Qhov no ua rau me me ntawm tam sim no ntws los ntawm Shockley diode.

Kauj ruam rov qab diodes

Ib kauj ruam rov qab diode (SRD) yog cov khoom siv hluav taws xob semiconductor uas tuaj yeem muab lub xeev ruaj khov, tsis muaj qhov xwm txheej ntawm kev coj ua ntawm nws cov anode thiab cathode. Kev hloov pauv ntawm lub xeev tawm mus rau hauv lub xeev tuaj yeem tshwm sim los ntawm qhov tsis zoo voltage pulses. Thaum nyob rau, SRD coj zoo li lub diode zoo meej. Thaum tawm, SRD feem ntau tsis muaj kev cuam tshuam nrog qee qhov xau tam sim no, tab sis feem ntau tsis txaus ua rau lub zog poob tseem ceeb hauv ntau daim ntawv thov.

Daim duab hauv qab no qhia cov kauj ruam rov qab waveforms rau ob hom SRDs. Qhov nkhaus sab sauv qhia txog hom kev rov qab sai, uas emits ntau lub teeb thaum mus rau hauv lub xeev tawm. Nyob rau hauv sib piv, qhov qis nkhaus qhia tau hais tias ib tug ultra-ceev rov qab diode optimized rau kev kub ceev kev khiav hauj lwm thiab exhibiting tsuas negligible pom hluav taws xob thaum lub sij hawm hloov mus rau-tawm.

Txhawm rau tig rau SRD, qhov hluav taws xob anode yuav tsum tshaj lub tshuab pib voltage (VT). SRD yuav tua thaum lub peev xwm anode tsawg dua lossis sib npaug ntawm cov peev xwm cathode.

qhov diode

Lub qhov diode yog ib daim ntawv ntawm quantum engineering uas siv ob daim ntawm ib lub semiconductor thiab koom nrog ib daim nrog rau sab nraud. Lub qhov diode yog tshwj xeeb nyob rau hauv uas cov electrons ntws los ntawm lub semiconductor es tsis txhob nyob ib ncig ntawm nws. Qhov no yog ib qho ntawm cov laj thawj tseem ceeb vim li cas cov txheej txheem no yog qhov tshwj xeeb, vim tias tsis muaj lwm yam kev thauj mus los ntawm electron mus txog qhov no tau ua tiav qhov kev ua haujlwm zoo li no. Ib qho ntawm cov laj thawj vim li cas qhov diodes thiaj li nrov yog tias lawv siv qhov chaw tsawg dua li lwm hom quantum engineering thiab tseem tuaj yeem siv rau hauv ntau daim ntawv thov hauv ntau qhov chaw.

Varactor diode

Lub varactor diode yog ib qho khoom siv hluav taws xob siv nyob rau hauv qhov ntsuas hluav taws xob hloov pauv hloov pauv. Lub varactor diode muaj ob qhov kev sib txuas, ib qho ntawm sab anode ntawm PN kev sib tshuam thiab lwm qhov ntawm sab cathode ntawm PN kev sib tshuam. Thaum koj siv qhov hluav taws xob rau lub varactor, nws tso cai rau lub chaw hluav taws xob los ua qhov hloov qhov dav ntawm nws cov txheej txheem depletion. Qhov no yuav zoo hloov nws capacitance.

laser diode

Lub laser diode yog ib lub semiconductor uas emits coherent lub teeb, kuj hu ua laser teeb. Lub laser diode emits ncaj qha mus rau lub teeb kab teeb nrog qhov sib txawv tsawg. Qhov no yog qhov sib piv rau lwm qhov chaw teeb pom kev zoo, xws li cov qauv LEDs, uas nws lub teeb pom kev sib txawv heev.

Laser diodes yog siv rau optical cia, laser printers, barcode scanners thiab fiber optic kev sib txuas lus.

Transient suppression diode

Transient voltage suppression (TVS) diode yog ib lub diode tsim los tiv thaiv cov hluav taws xob hluav taws xob thiab lwm yam kev hloov pauv. Nws kuj tseem muaj peev xwm sib cais qhov hluav taws xob thiab tam sim no los tiv thaiv cov hluav taws xob siab dhau los ntawm kev nkag mus rau hauv cov khoom siv hluav taws xob. TVS diode yuav tsis ua haujlwm thaum lub sijhawm ua haujlwm, tab sis tsuas yog ua thaum lub sijhawm hloov pauv. Thaum lub sijhawm hloov hluav taws xob, TVS diode tuaj yeem ua haujlwm nrog ob qho tib si ceev dv / dt spikes thiab loj dv / dt peaks. Cov cuab yeej no feem ntau pom muaj nyob rau hauv cov input circuits ntawm microprocessor circuits, qhov twg nws ua cov kev kub ceev hloov cov teeb liab.

Kub doped diodes

Kub diodes tuaj yeem pom hauv capacitors, rectifiers, thiab lwm yam khoom siv. Cov diodes no feem ntau yog siv hauv kev lag luam hluav taws xob vim tias lawv tsis xav tau ntau qhov hluav taws xob los ua hluav taws xob. Diodes doped nrog kub tuaj yeem ua los ntawm p-type lossis n-hom semiconductor cov ntaub ntawv. Cov kub-doped diode ua hluav taws xob zoo dua ntawm qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv n-hom diodes.

Kub tsis yog ib qho khoom siv zoo tshaj plaws rau doping semiconductors vim hais tias kub atoms loj heev kom yooj yim haum rau hauv semiconductor crystals. Qhov no txhais tau hais tias feem ntau kub tsis diffuse zoo heev rau hauv semiconductor. Ib txoj hauv kev los nce qhov loj ntawm cov atoms kub kom lawv tuaj yeem sib txawv yog ntxiv nyiaj lossis indium. Txoj kev siv ntau tshaj plaws siv rau dope semiconductors nrog kub yog siv sodium borohydride, uas pab tsim cov hlau alloy ntawm kub thiab nyiaj nyob rau hauv lub semiconductor siv lead ua.

Diodes doped nrog kub yog feem ntau siv nyob rau hauv high zaus zog daim ntaub ntawv. Cov diodes no pab txo qhov hluav taws xob thiab tam sim no los ntawm kev rov ua kom lub zog rov qab EMF ntawm lub diode lub zog sab hauv. Kub-doped diodes yog siv nyob rau hauv cov cav tov xws li resistor networks, lasers, thiab qhov diodes.

Super barrier diodes

Super barrier diodes yog ib hom diode uas tuaj yeem siv rau hauv kev siv hluav taws xob siab. Cov diodes no muaj tsawg rau pem hauv ntej voltage ntawm high zaus.

Super barrier diodes yog ntau hom diode raws li lawv tuaj yeem ua haujlwm dhau ntau qhov ntau zaus thiab qhov hluav taws xob. Lawv tsuas yog siv nyob rau hauv hluav taws xob hloov hluav taws xob rau hluav taws xob faib tshuab, rectifiers, lub cev muaj zog tsav inverters thiab cov khoom siv hluav taws xob.

Lub superbarrier diode yog tsim los ntawm silicon dioxide nrog tooj liab ntxiv. Lub superbarrier diode muaj ntau qhov kev xaiv tsim, suav nrog cov phiaj xwm germanium superbarrier diode, hlws ris superbarrier diode, thiab cais superbarrier diode.

Peltier diode

Peltier diode yog semiconductor. Nws tuaj yeem siv los tsim hluav taws xob tam sim no hauv kev teb rau thermal zog. Cov cuab yeej no tseem tshiab thiab tseem tsis tau nkag siab tag nrho, tab sis zoo li nws yuav muaj txiaj ntsig zoo rau kev hloov hluav taws xob rau hluav taws xob. Qhov no tuaj yeem siv tau rau lub tshuab rhaub dej lossis txawm nyob hauv tsheb. Qhov no yuav tso cai rau kev siv cov cua sov uas tsim los ntawm lub tshuab hluav taws xob sab hauv, uas feem ntau yog siv hluav taws xob. Nws kuj tseem yuav tso cai rau lub cav khiav kom zoo dua, vim nws yuav tsis tas yuav tsim hluav taws xob ntau (yog li siv roj tsawg), tab sis hloov lub Peltier diode yuav hloov cov khib nyiab pov tseg rau hauv lub zog.

siv lead ua diode

Crystal diodes feem ntau yog siv rau nqaim band lim, oscillators lossis voltage tswj amplifiers. Crystal diode suav hais tias yog ib daim ntawv thov tshwj xeeb ntawm cov nyhuv piezoelectric. Cov txheej txheem no pab tsim hluav taws xob thiab cov teeb liab tam sim no siv lawv cov khoom siv hauv paus. Crystal diodes kuj feem ntau ua ke nrog lwm cov circuits uas muab kev nthuav dav lossis lwm yam haujlwm tshwj xeeb.

Avalanche Diode

Ib qho avalanche diode yog ib qho khoom siv hluav taws xob uas tsim cov avalanche los ntawm ib qho hluav taws xob los ntawm cov khoom siv hluav taws xob mus rau valence band. Nws yog siv los ua rectifier nyob rau hauv high-voltage DC fais fab circuits, raws li ib tug infrared radiation detector, thiab raws li ib tug photovoltaic tshuab rau ultraviolet hluav taws xob. Cov nyhuv avalanche ua rau kom qhov hluav taws xob poob rau pem hauv ntej hla lub diode kom nws tuaj yeem ua kom tsawg dua qhov hluav taws xob tawg.

Silicon Controlled Rectifier

Silicon Controlled Rectifier (SCR) yog peb-terminal thyristor. Nws tau tsim los ua zoo li lub qhov cub microwave kom tswj tau lub zog. Nws tuaj yeem tshwm sim los ntawm qhov tam sim no lossis qhov voltage, lossis ob qho tib si, nyob ntawm qhov chaw tso tawm qhov rooj. Thaum lub rooj vag tus pin tsis zoo, nws tso cai rau tam sim no ntws los ntawm SCR, thiab thaum nws zoo, nws thaiv tam sim no los ntawm ntws los ntawm SCR. Qhov chaw ntawm lub rooj vag tus pin txiav txim seb tam sim no dhau los lossis raug thaiv thaum nws nyob hauv qhov chaw.

Lub tshuab nqus tsev diodes

Lub tshuab nqus tsev diodes yog lwm hom diode, tab sis tsis zoo li lwm hom, lawv tau siv hauv lub tshuab nqus tsev kom tswj tau tam sim no. Lub tshuab nqus tsev diodes tso cai rau tam sim no ntws ntawm qhov hluav taws xob tas li, tab sis kuj muaj cov kab hluav taws xob tswj uas hloov qhov voltage. Nyob ntawm qhov voltage nyob rau hauv daim phiaj tswj, lub tshuab nqus tsev diode yog tso cai los yog nres tam sim no. Lub tshuab nqus tsev diodes yog siv los ua amplifiers thiab oscillators hauv xov tooj cua receivers thiab transmitters. Lawv kuj ua hauj lwm raws li rectifiers uas hloov AC rau DC siv los ntawm cov khoom siv hluav taws xob.

PIN diode

PIN diodes yog ib hom pn junction diode. Feem ntau, PINs yog ib qho khoom siv hluav taws xob uas pom muaj qhov tsis zoo thaum muaj hluav taws xob siv rau nws. Qhov kev tiv thaiv qis no yuav nce ntxiv raws li qhov siv hluav taws xob nce ntxiv. Cov lej PIN muaj qhov ntsuas hluav taws xob ua ntej lawv ua haujlwm. Yog li, yog tias tsis muaj hluav taws xob tsis zoo siv, lub diode yuav tsis dhau tam sim no kom txog thaum nws ncav cuag tus nqi no. Tus nqi tam sim no ntws los ntawm cov hlau yuav nyob ntawm seb qhov sib txawv lossis qhov hluav taws xob ntawm ob lub terminals, thiab yuav tsis muaj qhov xau los ntawm ib lub davhlau ya nyob twg mus rau lwm qhov.

Point Contact Diode

Lub point diode yog ib qho khoom siv ib-txoj kev uas muaj peev xwm txhim kho lub teeb liab RF. Point-Contact kuj yog hu ua non-junction transistor. Nws muaj ob lub xov hlau txuas nrog cov khoom siv semiconductor. Thaum cov xov hlau no kov, ib qho "pinch point" yog tsim qhov twg cov electrons tuaj yeem hla. Hom diode no yog siv tshwj xeeb nrog AM xov tooj cua thiab lwm yam khoom siv los pab kom lawv ntes RF teeb liab.

Diode Hanna

Lub Gunn diode yog ib lub diode uas muaj ob qho tib si anti-parallel pn junctions nrog asymmetric barrier qhov siab. Qhov no ua rau muaj kev txwv tsis pub muaj zog ntawm kev khiav ntawm electrons nyob rau hauv kev taw qhia pem hauv ntej, thaum lub sij hawm tam sim no tseem ntws nyob rau hauv txoj kev rov qab.

Cov khoom siv no feem ntau yog siv los ua microwave generators. Lawv tau tsim nyob rau xyoo 1959 los ntawm J. B. Gann thiab AS Newell ntawm Royal Post Office hauv UK, los ntawm lub npe los ntawm: "Gann" yog cov ntawv luv ntawm lawv lub npe, thiab "diode" vim tias lawv ua haujlwm ntawm cov khoom siv roj (Newell yav dhau los ua haujlwm. ntawm Edison Institute of Communications). Tswb Laboratories, qhov chaw nws ua haujlwm ntawm cov khoom siv semiconductor).

Thawj daim ntawv thov loj ntawm Gunn diodes yog thawj tiam ntawm British tub rog UHF cov khoom siv xov tooj cua, uas tau siv nyob rau xyoo 1965. Tub rog AM xov tooj cua kuj tau siv dav siv Gunn diodes.

Tus yam ntxwv ntawm Gunn diode yog tias tam sim no tsuas yog 10-20% ntawm cov pa roj carbon diode. Tsis tas li ntawd, qhov hluav taws xob poob thoob plaws lub diode yog kwv yees li 25 npaug tsawg dua li cov pa diode, feem ntau 0 mV ntawm chav tsev kub rau XNUMX.

Video Tutorial

Dab tsi yog diode - Electronics Tutorial Rau Beginners

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Peb cia siab tias koj tau kawm tias lub diode yog dab tsi. Yog tias koj xav paub ntau ntxiv txog yuav ua li cas cov khoom zoo no ua haujlwm, mus saib peb cov ntawv ntawm nplooj ntawv diodes. Peb cia siab tias koj yuav siv txhua yam koj tau kawm nyob rau lub sijhawm no thiab.