Lub luag haujlwm tiv thaiv dab tsi yog lub diode ua si hauv cov khoom siv tshuaj xyuas?

1, Kev tiv thaiv zoo li qub: "kev tiv thaiv kev nyab xeeb" uas tiv thaiv cov kab hluav taws xob zoo
Cov cuab yeej saib xyuas kev kho mob sib xyaw ua ke ntau ntawm cov kev sib koom ua ke thiab kev ua haujlwm tsis tshua muaj hluav taws xob ua haujlwm semiconductor, xws li microprocessors, sensors, thiab lwm yam, sab hauv. Cov khoom siv no tsis tshua muaj siab rau electrostatic paug (ESD), thiab qhov hluav taws xob zoo li qub tuaj yeem ncav cuag ntau txhiab volts, uas tuaj yeem rhuav tshem cov khoom siv tam sim no, ua rau cov cuab yeej tsis ua haujlwm lossis kev puas tsuaj. Diodes, tshwj xeeb tshaj yog ESD tiv thaiv diodes, tau dhau los ua cov ntsiab lus tseem ceeb ntawm kev tiv thaiv - zoo li qub vim lawv cov lus teb ceev ceev thiab cov yam ntxwv tsis tshua muaj hluav taws xob.

Ua ib qho piv txwv ntawm electrocardiogram, nws cov teeb liab electrocardiogram tau txais pem hauv ntej-kawg feem ntau suav nrog cov khoom siv hluav taws xob siab impedance amplifier, uas yog rhiab heev rau hluav taws xob zoo li qub. Thaum siv lub cuab yeej, cov neeg ua haujlwm kho mob lossis cov neeg mob tuaj yeem tsim hluav taws xob zoo li qub vim muaj kev sib txhuam. Yog tias nws ncaj qha ua haujlwm ntawm lub cuab yeej interface, nws yuav ua rau muaj kev hem thawj rau kev nyab xeeb ntawm lub hauv paus. Nyob rau ntawm lub sijhawm no, ESD tiv thaiv diode txuas nrog rau tib lub sijhawm rau lub teeb liab input davhlau ya nyob twg. Thaum cov hluav taws xob hluav taws xob hluav taws xob ntau tshaj nws qhov hluav taws xob tawg, lub diode ua haujlwm sai sai, qhia cov hluav taws xob hluav taws xob tam sim no rau hauv av xaim thiab clamping qhov hluav taws xob nyob rau hauv qhov chaw nyab xeeb, yog li tiv thaiv cov hluav taws xob tom ntej los ntawm electrostatic puas. Cov txheej txheem tiv thaiv no yog qhov tseem ceeb rau kev ua kom ntseeg tau tias muaj tseeb thiab kis tau tus kab mob electrocardiogram, tsis txhob muaj kev cuam tshuam ntawm waveform distortion lossis cov ntaub ntawv poob los ntawm electrostatic cuam tshuam.

2, Kev tiv thaiv Surge: "cov ntaub thaiv ruaj khov" tiv thaiv xob laim thiab lub zog hloov pauv
xob laim ntaus thiab lub zog hloov pauv yog lwm qhov kev hem thawj loj uas tau ntsib los ntawm cov cuab yeej tshuaj xyuas. Cov hluav taws xob hluav taws xob tuaj yeem ua rau muaj hluav taws xob ntau dhau los ntawm lub zog lossis cov kab teeb liab, thaum lub zog hloov pauv yuav ua rau muaj kev cuam tshuam dhau los vim yog kab sib chaws ua txhaum lossis cov khoom pib nres. Cov surge voltages no yuav nyob deb tshaj lub peev xwm ntawm lub internal circuits ntawm cov khoom, ua rau cov khoom puas los yog cov ntaub ntawv yuam kev. Diodes, tshwj xeeb tshaj yog transient voltage suppression (TVS) diodes, tau dhau los ua ib qho kev xaiv zoo tshaj plaws rau kev tiv thaiv kev tiv thaiv vim lawv cov lus teb nanosecond ceev thiab meej clamping muaj peev xwm.

Nyob rau hauv lub hwj chim module ntawm cov cuab yeej saib xyuas kev kho mob, TVS diodes feem ntau txuas nrog nyob rau hauv parallel ntawm lub hwj chim input davhlau ya nyob twg. Thaum xob laim los yog hluav taws xob hloov pauv ua rau muaj qhov hluav taws xob tawm tam sim ntawd, TVS diode ua haujlwm nyob rau lub sijhawm luv luv, clamping qhov voltage ntawm qhov kev nyab xeeb thiab tiv thaiv siab -voltage pulses los ntawm kev nkag mus rau sab hauv ntawm cov khoom siv. Piv txwv li, lub hwj chim module ntawm ib qho qauv ntawm ntau qhov ntsuas ntsuas siv SMAJ5.0CA TVS diode, uas muaj qhov siab tshaj plaws clamping voltage ntawm tsuas yog 6.5V. Thaum cov input voltage dheev nce mus rau ntau pua volts, TVS diode tuaj yeem txwv qhov hluav taws xob sai sai hauv qhov chaw nyab xeeb, kom ntseeg tau tias cov khoom tseem ceeb xws li DC / DC converter thiab microprocessor tsis puas. Cov txheej txheem tiv thaiv no yog qhov tseem ceeb rau kev ua haujlwm ruaj khov ntawm cov khoom siv hauv qhov hnyav electromagnetic ib puag ncig.

3, Kev Tshaj Tawm thiab Kev Tiv Thaiv: Tus "Zoo Craftsman" Ua kom cov ntaub ntawv raug
Cov cuab yeej saib xyuas kev kho mob yuav tsum tau sau, txheej txheem, thiab xa tawm ntau yam kab mob lom neeg, xws li electrocardiogram, ntshav siab, ntshav oxygen, thiab lwm yam. Cov cim no feem ntau tsis muaj zog thiab raug cuam tshuam rau sab nraud. Diodes ua lub luag haujlwm hauv kev txwv, kuaj pom, thiab kho cov teeb liab ua cov khoom siv hluav taws xob, ua kom muaj qhov tseeb thiab ruaj khov ntawm cov teeb liab.

Nyob rau hauv electrocardiogram teeb liab ua circuits, diodes feem ntau yog siv nyob rau hauv amplitude limiting circuits los tiv thaiv kev puas tsuaj rau cov amplifiers tom ntej los yog analog - rau - digital converters vim ntau dhau amplitude ntawm lub teeb liab electrocardiogram. Lub caij no, diodes kuj tseem siv tau rau hauv kev tshawb nrhiav circuits kom rho tawm tsawg- zaus electrocardiogram cov cim los ntawm siab- zaus hloov pauv cov cim, ua kom yooj yim rau kev ua thiab kev soj ntsuam tom qab. Tsis tas li ntawd, nyob rau hauv cov ntshav ntsuas ntsuas Circuit Court, diodes tau ua ke nrog cov resistors, capacitors, thiab lwm yam khoom siv los tsim ib lub voj voog rectification, uas hloov AC ntshav siab cov cim rau hauv DC cov cim rau cov ntaub ntawv ua thiab tso tawm los ntawm microprocessors. Cov teeb liab ua thiab kev tiv thaiv cov txheej txheem no yog qhov tseem ceeb rau kev ua kom ntseeg tau tias cov cuab yeej saib xyuas kev kho mob tuaj yeem sau thiab xa cov teeb liab lom neeg, muab pov thawj kev kuaj pom tseeb rau cov kws kho mob.

4, Kev Tswj Xyuas Hluav Taws Xob: Tus Neeg Saib Xyuas Kev Txawj Ntse rau Kev Txhim Kho Cov Khoom Siv Hluav Taws Xob thiab Kev Ntseeg
Cov cuab yeej saib xyuas kev kho mob feem ntau yuav tsum tau ua haujlwm ntev - lub sijhawm ua haujlwm tas mus li, nrog rau cov kev xav tau siab heev rau kev ruaj ntseg thiab kev siv hluav taws xob hauv kev tswj fais fab. Diodes ua lub luag haujlwm hauv kev hloov kho, kev tswj hluav taws xob, thiab hloov pauv hauv kev tswj hwm hluav taws xob, kom ntseeg tau tias cov khoom siv tuaj yeem tau txais cov khoom siv hluav taws xob ruaj khov nyob rau hauv kev ua haujlwm sib txawv.

Nyob rau hauv lub hwj chim rectification Circuit Court, diodes hloov AC zog rau hauv pulsating DC zog, muab ruaj khov input voltage rau DC / DC converters tom ntej. Nyob rau tib lub sijhawm, qhov voltage regulator diode stabilizes Circuit Court voltage los ntawm nws cov yam ntxwv rov qab, tiv thaiv cov khoom siv txawv txav los ntawm cov khoom siv hluav taws xob hloov pauv. Nyob rau hauv lub switching fais fab mov Circuit Court, diodes thiab switching tubes ua hauj lwm ua ke kom ua tau zoo zog kis tau tus mob thiab hloov dua siab tshiab, kev txhim kho lub zog efficiency piv ntawm cov khoom. Tsis tas li ntawd, diodes kuj tuaj yeem siv rau hauv cov hluav taws xob sib cais hluav taws xob los tiv thaiv kev sib cuam tshuam ntawm cov khoom siv hluav taws xob sib txawv thiab txhim kho kev ntseeg tau ntawm tag nrho cov khoom siv.