Qhov teeb meem ntawm Pulse Swarm Suppression hauv Switching Fais Fab Khoom
Hloov cov khoom siv hluav taws xob tuaj yeem siv sib cais raws li cov khoom siv hluav taws xob, tab sis ntau zaus, lawv tau siv los ua cov khoom sib txuas nrog txhua yam khoom siv hluav taws xob. Yog li ntawd, switching fais fab mov muaj nws qhov tshwj xeeb. EMC kev ua tau zoo ntawm kev hloov hluav taws xob yog cuam tshuam nrog kev siv ib txwm siv ntawm txhua yam khoom siv hluav taws xob. Vim li no, EMC kev ua tau zoo ntawm cov khoom siv hluav taws xob nyob ntawm qhov ua ntej ntawm EMC kev ua haujlwm ntawm kev hloov hluav taws xob.
① Teeb meem ntawm Pulse Swarm Suppression hauv Hloov Cov Khoom Siv Hluav Taws Xob
Raws li kev hloov cov khoom siv hluav taws xob, ib sab ntawm cov khoom siv lim dej ntawm cov khoom siv hluav taws xob hloov, hloov
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 pab pawg mem tes cuam tshuam yog kev cuam tshuam ntau zaus, thiab cov lim capacitors nyob rau hauv cov kab hluav taws xob hloov hluav taws xob tau teeb tsa kom tsis txhob muaj kev cuam tshuam tsawg zaus sib txawv. Lub Electrolytic capacitor muaj kev cuam tshuam tsis txaus ntawm lub ripple ntawm lub zog hloov pauv ntawm nws tus kheej, Tsis txhob hais txog kev cuam tshuam ntawm cov pab pawg mem tes cuam tshuam nrog cov khoom sib haum xeeb saum toj no 60MHz, yog li ntawd, thaum saib cov pab pawg pulse waveform ntawm cov tswv yim thiab cov zis kawg ntawm kev hloov. fais fab mov nrog lub oscilloscope, tsis muaj kev cuam tshuam kev cuam tshuam kev cuam tshuam.
Xav tias pab pawg pulse cuam tshuam yog kev cuam tshuam ntau hom.
Raws li kev hloov cov khoom siv hluav taws xob, kev siv cov ntxaij lim dej tawm yog qhov kev ntsuas tseem ceeb los cuam tshuam cov pab pawg mem tes cuam tshuam tau txais los ntawm kev hloov cov khoom siv hluav taws xob.
Qhov thib ob, tus tsim ntawm high-frequency transformers nyob rau hauv switching fais fab mov circuits, 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, lub jumper capacitance nruab nrab ntawm lub hauv paus Circuit Court thiab theem nrab Circuit Court ntawm switching fais fab mov tuaj yeem muab txoj hauv kev rau Common-mode cuam tshuam los ntawm thawj Circuit Court mus rau theem nrab Circuit Court kom rov qab mus rau thawj circuits.
Nws kuj muaj qee yam inhibitory cuam tshuam ntawm pab pawg pulse cuam tshuam.
Thaum kawg, ntxiv ib hom hom lim circuit (hom hom inductor thiab hom hom capacitor) ntawm 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 muaj qhov cuam tshuam me ntsis ntawm kev cuam tshuam ntawm pab pawg pulse, tab sis yog tias lub voj voog ntawm lub zog hloov hluav taws xob tsis zoo, nws tuaj yeem ua rau muaj kev cuam tshuam ntau ntxiv ntawm kev cuam tshuam ntawm pab pawg pulse cuam tshuam rau hauv lub zog hloov hluav taws xob. Tshwj xeeb tshaj yog cov ntsiab lus ntawm pulse pab pawg cuam tshuam yog kev sib xyaw ua ke thiab cuam tshuam hluav taws xob. Txawm hais tias kev siv cov ntxaij lim dej tawm tsam cov khoom ntawm kev cuam tshuam, qhov cuam tshuam hluav taws xob uas muaj nyob ib puag ncig cov kab sib txuas tseem muaj. Nws tseem tuaj yeem nkag mus rau qhov * * layout ntawm lub zog hloov hluav taws xob (thaum thawj lossis theem nrab qhov teeb tsa ntawm lub zog hloov hluav taws xob qhib dhau lawm, tsim lub "loj lub kav hlau txais xov") txhawm rau cuam tshuam cov hluav taws xob hluav taws xob hauv pab pawg pulse cuam tshuam, Qhov no nyob rau hauv lem cuam tshuam cov kev cuam tshuam kev cuam tshuam ntawm tag nrho cov cuab yeej.
② Hais txog qhov teeb meem ntawm pab pawg pulse txwv ntawm kev hloov cov khoom siv hluav taws xob, kev ceev faj yuav tsum tau coj mus rau hauv pab pawg pulse kuaj ntawm cov khoom siv hluav taws xob.
Thaum ua cov pab pawg pulse tiv thaiv kev cuam tshuam ntawm lub zog ntawm cov khoom siv hluav taws xob, peb yeej muaj tseeb
Kev saib xyuas yuav tsum tau them rau kev tiv thaiv kev cuam tshuam kev ua haujlwm ntawm cov khoom siv hluav taws xob, tab sis peb yuav tsum tsis txhob hnov qab qhov tseeb tias kev cuam tshuam ntawm pab pawg mem tes yog qhov tseem ceeb ntawm kev sib txuas ua ke thiab cuam tshuam hluav taws xob. Yog li ntawd, thaum muaj kev ntsuas txaus los ntawm cov khoom siv hluav taws xob thiab qhov kev ntsuam xyuas tseem tsis dhau, peb yuav tsum xav txog seb qhov kev cuam tshuam tuaj yeem nkag mus rau cov cuab yeej siv los ntawm lwm txoj kev.
