EMI tiv thaiv kev hloov hluav taws xob
(1) Txo dv / dt thiab di / dt (txo nws lub ncov tus nqi thiab qeeb nws txoj kab nqes)
(2) Tsim nyog thov ntawm varistor kom txo qhov hluav taws xob surge.
(3) Damping network suppresses overshoot.
(4) Diodes nrog cov yam ntxwv zoo rov qab yog siv los txo qis EMI zaus.
(5) Kev kho lub zog muaj zog thiab lwm yam kev kho kom haum xeeb.
(6) Siv lub tshuab lim fais fab uas tsim nyog.
(7) Kev kho av tsim nyog
(8) Kev tiv thaiv kev tiv thaiv zoo
(9) Tsim nyog pCB tsim
EMI cuam tshuam qhov chaw hloov hluav taws xob
(1) Fais fab hloov raj
Lub hwj chim hloov raj ua haujlwm nyob rau hauv lub xeev ntawm On-Off ceev lub voj voog hloov, thiab ob qho tib si dv / dt thiab di / dt hloov pauv sai. Yog li ntawd, lub hwj chim hloov raj yog lub ntsiab cuam tshuam qhov chaw ntawm ob qho tib si hluav taws xob teb coupling thiab magnetic teb coupling.
（2）
EMI qhov chaw ntawm high-frequency transformer yog feem ntau xav txog nyob rau hauv lub ceev cyclic transformation ntawm di / dt sib xws rau to to inductance, high-frequency transformer yog ib qho tseem ceeb cuam tshuam qhov chaw ntawm magnetic teb coupling.
(3) Rectifier diode
EMI qhov chaw ntawm rectifier diode feem ntau yog tshwm sim hauv cov yam ntxwv rov qab, thiab qhov cuam tshuam ntawm qhov rov qab rov qab tam sim no yuav ua rau siab dv / dt hauv inductance (lead inductance, stray inductance, thiab lwm yam), uas yuav ua rau muaj zog electromagnetic cuam tshuam.
(4) PEB
Hais lus tseeb, pCB yog qhov sib txuas ntawm cov kev cuam tshuam saum toj no, thiab qhov zoo ntawm pCB ncaj qha cuam tshuam rau qhov zoo ntawm EMI kev tawm tsam.
Kev tswj cov dej xau inductance ntawm high zaus transformer
Cov xau inductance ntawm high-frequency transformer yog ib qho ntawm cov laj thawj tseem ceeb rau lub ncov voltage ntawm lub hwj chim hloov raj, yog li kev tswj cov dej ntws inductance tau dhau los ua qhov teeb meem tseem ceeb los daws EMI los ntawm high-frequency transformer.
Ob lub ntsiab lus tseem ceeb los txo cov xau inductance ntawm lub siab zaus transformer: hluav taws xob tsim thiab txheej txheem tsim!
(1) Xaiv cov tub ntxhais sib nqus kom zoo kom txo tau qhov inductance. Lub to taub inductance yog proportional rau lub square ntawm tus naj npawb ntawm cov lem nyob rau hauv thawj sab, thiab txo tus naj npawb ntawm lem yuav txo tau qhov to ntawm inductance.
(2) Txo cov txheej rwb thaiv tsev ntawm windings. Tam sim no muaj ib txheej insulating hu ua "kub nyias zaj duab xis" nrog ib tug tuab ntawm 20 ~ 100 μ m thiab ib tug pulse breakdown voltage ntawm ob peb txhiab volts.
(3) Ua kom cov coupling ntawm windings thiab txo qhov to inductance.
