Dab tsi yog 5 hom diodes?

1, Rectifying diode: lub caj qaum ntawm lub zog hloov dua siab tshiab
Raws li lub npe qhia, rectifier diodes feem ntau yog siv los hloov pauv tam sim no (AC) mus rau tam sim no ncaj qha (DC). Qhov no yog ua tiav los ntawm tus yam ntxwv ntawm lub diode conducting nyob rau hauv pem hauv ntej bias thiab txiav tawm nyob rau hauv rov qab bias. Rectifiers yog dav siv nyob rau hauv cov khoom siv hluav taws xob xws li fais fab adapters, lub xov tooj ntawm tes chargers, roj teeb chargers, thiab lwm yam., muab lub zog DC ruaj khov rau cov khoom siv no.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm rectifier diodes yog nyob ntawm unidirectional conductivity ntawm PN junctions. Thaum lub sij hawm zoo ib nrab voj voog ntawm AC zog, lub diode nyob rau hauv ib tug pem hauv ntej biased lub xeev, tso cai rau tam sim no mus txog; Nyob rau hauv qhov tsis zoo ib nrab voj voog, lub diode yog nyob rau hauv lub rov qab bias lub xeev thiab tam sim no raug thaiv. Nyob rau hauv txoj kev no, tsuas yog qhov zoo ib nrab ntawm lub voj voog tam sim no tuaj yeem dhau los ntawm diode, yog li ua tiav kev ua haujlwm rectification. Kev xaiv ntawm rectifier diodes feem ntau yuav tsum tau txiav txim siab ntawm qhov tsis xws li qhov siab tshaj plaws rectification tam sim no, qhov siab tshaj plaws rov qab ua haujlwm voltage, thiab rov qab lub sij hawm rov qab los xyuas kom meej tias lawv ruaj khov thiab kev ntseeg siab hauv cov ntawv thov tshwj xeeb.
2, Zener diode: tus saib xyuas ntawm Circuit Court stability
Zener diode, tseem hu ua Zener diode, yog ib hom tshwj xeeb ntawm silicon diode nrog ib qho kev sib tw nrawm heev hauv cheeb tsam thim rov qab. Qhov no txhais tau hais tias nyob rau hauv ib tug loj ntau yam ntawm tam sim no variations, lub voltage regulator diode tsuas pom qhov tsawg voltage hloov. Cov yam ntxwv no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tsim hluav taws xob siv hluav taws xob hauv circuits.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm qhov hluav taws xob tswj hluav taws xob diode yog ua raws li cov yam ntxwv rov qab ntawm PN kev sib tshuam. Thaum qhov rov qab voltage nce mus rau ib qho nqi, qhov voltage regulator diode nkag mus rau hauv lub xeev tawg, thiab tam sim no nce sharply, tab sis qhov voltage hloov me me heev. Los ntawm kev kho qhov tawg voltage ntawm qhov voltage regulator diode, kev ruaj ntseg ntawm cov zis hluav taws xob tuaj yeem tswj tau qhov tseeb. Zener diodes tau siv dav hauv cov hluav taws xob hluav taws xob, cov khoom siv hluav taws xob tswj hwm, hluav taws xob ballasts, thiab lwm yam kev lag luam kom ntseeg tau tias cov khoom siv hluav taws xob tseem tuaj yeem ua haujlwm ib txwm muaj txawm tias muaj qhov hloov pauv voltage.
3, Lub Teeb Emitting Diodes (LEDs): Innovators hauv Teeb pom kev zoo thiab zaub
Lub teeb emitting diode (LED) yog ib qho khoom siv hluav taws xob uas tuaj yeem hloov hluav taws xob rau hauv lub teeb lub zog. Zoo ib yam li cov diodes zoo tib yam, LEDs kuj muaj unidirectional conductivity, tab sis lawv cov yam ntxwv tshwj xeeb muaj xws li lub teeb teb ceev ceev, nplua nuj xim, thiab tsawg zog noj. Cov yam ntxwv no tau ua rau LED tau dav siv hauv thaj chaw xws li teeb pom kev zoo, kev siv thev naus laus zis, thiab cov teeb liab qhia.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm LED yog ua raws li cov txheej txheem recombination ntawm electrons thiab qhov nyob rau hauv PN hlws ris. Thaum tam sim no dhau los ntawm LED, cov hluav taws xob thiab qhov sib txuas ua ke hauv PN kev sib tshuam, tso lub teeb lub zog. Cov xim ntawm LED nyob ntawm lub wavelength emission los ntawm nws cov khoom semiconductor. Piv txwv li, cov ntaub ntawv xws li gallium phosphide (GaP) thiab gallium arsenide phosphide (GaAsP) tso tawm photons thaum electrons thiab qhov recombine, tsim lub teeb ntawm cov xim sib txawv. Nrog rau kev txhim kho txuas ntxiv ntawm LED thev naus laus zis, nws cov kev ua haujlwm luminous thiab xim saturation tau txhim kho tas li, thiab nws daim ntawv thov teb kuj nthuav dav, xws li LED teeb pom kev zoo, LED cov ntxaij vab tshaus, LED backlighting, thiab lwm yam.
4, Photodiode: Tus Neeg xa xov liaison teeb pom kev hloov pauv
Photodiode yog ib qho khoom siv semiconductor uas tuaj yeem hloov lub teeb lub zog rau hauv hluav taws xob hluav taws xob raws li qhov siv ntawm qhov teeb meem teeb meem. Nws ua haujlwm raws li lub hauv paus ntsiab lus ntawm photoelectric effect ntawm PN hlws ris, uas yog, thaum photons sib tsoo nrog PN hlws ris, electron qhov khub yog generated, yog li tsim photocurrent. Cov yam ntxwv no ua rau photodiodes muaj cov ntawv thov tseem ceeb hauv thaj chaw xws li kev tshawb pom lub teeb, kev sib txuas lus kho qhov muag, thiab cov duab sensors.
Cov hom kev ua haujlwm ntawm photodiodes muaj xws li photovoltaic hom thiab photoconductive hom. Nyob rau hauv hom photovoltaic, lub photodiode ua haujlwm ntawm xoom bias thiab tsim cov photocurrent proportional rau qhov teeb meem lub teeb siv. Nyob rau hauv lub photoconductive hom, lub photodiode ua hauj lwm nyob rau hauv lub reverse bias, thaum lub sij hawm uas lub photocurrent nce nrog lub zog ntawm teeb meem teeb meem, thaum lub tsaus nti tam sim no (xws li tam sim no nyob rau hauv tsis muaj lub teeb) yog suppressed. Photodiodes muaj qhov zoo ntawm rhiab heev, cov lus teb ceev ceev, thiab kev siv hluav taws xob tsawg, thiab ua lub luag haujlwm tseem ceeb hauv kev lag luam xws li kev sib txuas lus kho qhov muag, kho qhov muag pom, thiab ntsuas qhov muag.
5, Schottky diode: qhov kev xaiv zoo tshaj plaws rau kev kub ceev hloov
Schottky diode yog ib hom diode nrog hlau semiconductor kev sib cuag, uas muaj lub sij hawm rov qab luv luv, mus txog ob peb nanoseconds, thiab qis conduction voltage, feem ntau yog qis dua 0.4V. Cov yam ntxwv no muab Schottky diodes muaj txiaj ntsig zoo hauv kev kub ceev hloov hluav taws xob, hloov hom khoom siv hluav taws xob ruaj khov, thiab inverters.
Lub hauv paus ntsiab lus ua haujlwm ntawm Schottky diodes yog raws li Schottky barrier ntawm hlau thiab semiconductors. Thaum ib qho hluav taws xob rau pem hauv ntej siv rau Schottky diode, cov hluav taws xob dawb hauv cov hlau tuaj yeem hla lub peev xwm thaiv thiab nkag mus rau hauv cov khoom siv hluav taws xob, tsim cov khoom siv tam sim no. Nyob rau hauv qhov rov qab voltage, lub peev xwm barrier tiv thaiv electrons nkag mus rau hauv cov hlau los ntawm semiconductor, yog li thaiv qhov tam sim no. Qhov qis conduction voltage thiab ceev rov qab lub sij hawm ntawm Schottky diodes ua rau lawv zoo heev nyob rau hauv high-frequency switching circuits, thaum txo hwj chim noj thiab kub tiam. Qhov no ua rau Schottky diodes nyiam cov khoom nyob rau hauv high-speed electronic systems, wireless kev sib txuas lus, thiab lub hwj chim electronics systems.
https://www.trrsemicon.com/diode/smd-diode/schottky-diodes-sk12.html