Pulse pab pawg tiv thaiv teeb meem ntawm kev hloov fais fab mov
Cov khoom siv hluav taws xob hloov pauv tuaj yeem siv ib leeg los ua cov khoom siv hluav taws xob, tab sis feem ntau cov khoom siv hluav taws xob hloov pauv tau siv los ua ib feem ntawm txhua yam khoom siv hluav taws xob. Yog li ntawd, lub zog hloov hluav taws xob muaj nws qhov tshwj xeeb. Qhov kev ua tau zoo ntawm electromagnetic compatibility ntawm kev hloov hluav taws xob muaj feem xyuam nrog kev siv ib txwm siv ntawm txhua yam khoom siv hluav taws xob. Vim li no, qhov kev ua tau zoo ntawm electromagnetic compatibility ntawm cov khoom siv hluav taws xob yog nyob ntawm qhov ua tau zoo ntawm electromagnetic compatibility ntawm kev hloov hluav taws xob.
① Pulse pawg tiv thaiv teeb meem ntawm kev hloov fais fab mov
Raws li kev hloov pauv cov khoom siv hluav taws xob muaj kev txhawj xeeb, tawm hauv ib sab ntawm cov khoom siv lim ntawm cov khoom siv hluav taws xob hloov hluav taws xob, cov khoom siv hluav taws xob hloov pauv.
Cov kab hluav taws xob nws tus kheej muaj qhov cuam tshuam tsawg heev ntawm cov pab pawg pulse cuam tshuam. Qhov laj thawj tseem ceeb yog qhov tseem ceeb ntawm kev cuam tshuam ntawm pab pawg mem tes yog kev cuam tshuam ntau zaus, thiab cov lim capacitors hauv kev hloov hluav taws xob cov kab hluav taws xob tau tsim los txhawm rau txo qis zaus sib txawv hom cuam tshuam. Txawm li cas los xij, lub electrolytic capacitor tsis txaus los cuam tshuam cov ripple ntawm lub zog hloov pauv ntawm nws tus kheej, cia nyob ib leeg txwv cov pab pawg mem tes cuam tshuam nrog cov khoom sib haum xeeb saum 60MHz. Yog li ntawd, siv lub oscilloscope los soj ntsuam cov tswv yim thiab cov zis ntawm lub zog hloov hluav taws xob. Thaum cov pab pawg pulse waveform yog qhov kawg, tsis pom kev cuam tshuam kev cuam tshuam qhov cuam tshuam.
Xav txog tias kev cuam tshuam tawg yog kev cuam tshuam ntawm ib hom xwm txheej.
Raws li kev hloov pauv cov khoom siv hluav taws xob muaj kev txhawj xeeb, kev siv cov ntxaij lim dej tawm tswv yim yog qhov tseem ceeb rau kev hloov hluav taws xob hloov hluav taws xob txhawm rau txhawm rau cuam tshuam cov pab pawg pulse.
Qhov thib ob, tus tsim ntawm high-frequency transformer nyob rau hauv lub switching fais fab mov kab, tshwj xeeb tshaj yog cov kev siv ntawm shielding ntsuas, muaj ib tug tej yam inhibitory nyhuv ntawm pulse pab pawg neeg cuam tshuam.
Tsis tas li ntawd, qhov cross-connect capacitance nruab nrab ntawm lub hauv paus Circuit Court thiab theem nrab Circuit Court ntawm lub zog hloov hluav taws xob tuaj yeem muab txoj hauv kev rau kev cuam tshuam los ntawm thawj Circuit Court mus rau theem nrab Circuit Court kom rov qab mus rau thawj Circuit Court, uas yog.
Nws kuj muaj qee yam inhibitory cuam tshuam ntawm pab pawg pulse cuam tshuam.
Thaum kawg, ntxiv ib hom kev lim dej (common-mode inductor thiab common-mode capacitor) rau qhov kawg ntawm cov khoom siv hluav taws xob hloov pauv tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev cuam tshuam cov pab pawg mem tes.
Tsis tas li ntawd, qhov hloov hluav taws xob hloov hluav taws xob nws tus kheej tsis muaj qhov cuam tshuam rau kev cuam tshuam ntawm pab pawg mem tes, tab sis yog tias lub teeb ci ntawm lub zog hloov hluav taws xob tsis zoo, nws yuav ua rau muaj kev cuam tshuam ntxiv rau kev cuam tshuam ntawm pab pawg mem tes cuam tshuam rau hauv lub zog hloov hluav taws xob. Hauv particular, lub ntsiab ntawm pulse tawg cuam tshuam yog kev sib xyaw ua ke thiab kev cuam tshuam hluav taws xob. Txawm hais tias qhov kev cuam tshuam cuam tshuam ntawm kev cuam tshuam yog cuam tshuam vim kev siv lub lim dej tawm, cov hluav taws xob cuam tshuam uas muaj nyob ib puag ncig cov kab sib txuas tseem muaj, thiab cov khoom siv hluav taws xob hloov pauv tseem tuaj yeem xa mus. Qhov kev teeb tsa ntawm lub zog hloov hluav taws xob (qhov kev teeb tsa thawj lossis theem nrab ntawm lub zog hloov hluav taws xob qhib dhau lawm, tsim lub "loj lub kav hlau txais xov"), induces hluav taws xob Cheebtsam hauv pab pawg mem tes cuam tshuam.
② Hais txog qhov teeb meem ntawm pab pawg pulse suppression ntawm kev hloov hluav taws xob, dab tsi yuav tsum tau them sai sai rau thaum lub sij hawm pulse pab pawg kuaj cov khoom siv fais fab
Thaum ua cov pab pawg pulse tiv thaiv kev cuam tshuam ntawm lub zog hluav taws xob ntawm cov khoom siv hluav taws xob, peb yeej
Peb yuav tsum tau xyuam xim rau kev tiv thaiv kev cuam tshuam ntawm cov khoom siv hluav taws xob, tab sis peb yuav tsum tsis txhob hnov qab qhov tseeb tias kev cuam tshuam ntawm cov mem tes tawg yog qhov tseem ceeb ntawm kev sib txuas ntawm kev cuam tshuam thiab hluav taws xob cuam tshuam. Yog li ntawd, yog tias cov khoom siv hluav taws xob tseem tsis dhau qhov kev sim no tom qab siv cov kev ntsuas txaus, nws yuav tsum tau hloov. Kuv xav paub yog tias muaj kev cuam tshuam tuaj yeem nkag mus rau hauv cov cuab yeej siv los ntawm lwm txoj kev, ua rau cov khoom siv hluav taws xob kab hluav taws xob pulse pab pawg kev tiv thaiv tsis ua tiav.
