Hloov hom fais fab mov EMI technology Transmission channel
EMI kev siv tshuab hluav taws xob hloov hluav taws xob
(1) Txo dv / dt thiab di / dt (txo lawv lub ncov thiab qeeb lawv txoj kab nqes)
(2) Tsim nyog thov ntawm varistors kom txo qhov hluav taws xob surge
(3) Damping network suppresses overshoot
(4) Siv diodes nrog cov yam ntxwv zoo rov qab los txo qis EMI zaus
(5) Kev kho lub zog zoo thiab lwm yam kev kho kom haum xeeb
(6) Kev siv lub tshuab lim fais fab zoo tsim
(7) Kev kho av tsim nyog
(8) Kev tiv thaiv kev tiv thaiv zoo
(9) Tsim nyog pCB tsim
Hloov fais fab mov EMI technology cuam tshuam qhov chaw
(1) Fais fab hloov raj
Lub hwj chim hloov ua haujlwm nyob rau hauv On Off ceev cycling xeev, nrog rau ob qho tib si dv / dt thiab di / dt sai hloov. Yog li ntawd, lub hwj chim hloov tsis yog tsuas yog lub ntsiab cuam tshuam ntawm hluav taws xob teb coupling, tab sis kuj yog lub ntsiab cuam tshuam qhov chaw ntawm magnetic teb coupling.
(2) EMI qhov chaw ntawm high-frequency transformers feem ntau yog tshwm sim hauv kev hloov pauv sai ntawm di / dt sib haum rau cov xau inductance, ua rau cov khoom siv hluav taws xob ntau zaus yog qhov tseem ceeb cuam tshuam rau kev sib nqus teb sib txuas.
(3) Rectifier diode
EMI qhov chaw ntawm rectifier diodes yog feem ntau cuam tshuam nrog cov yam ntxwv rov qab. Qhov cuam tshuam ntawm qhov rov qab rov qab tam sim no yuav ua rau muaj qhov siab dv / dt hauv inductance (lead inductance, stray inductance, thiab lwm yam), uas ua rau muaj zog electromagnetic cuam tshuam.
(4) PEB
Ntau qhov tseeb, pCB yog qhov sib txuas ntawm cov kev cuam tshuam tau hais los saum no, thiab qhov zoo ntawm pCB ncaj qha cuam tshuam rau kev ua tau zoo ntawm kev tawm tsam EMI qhov tau hais tseg.
Kev tswj cov dej xau inductance hauv high-frequency transformers
Cov xau inductance ntawm high-frequency transformers yog ib qho ntawm cov laj thawj tseem ceeb rau lub cim ncov voltage thaum lub hwj chim hloov hluav taws xob raug tua. Yog li ntawd, kev tswj cov dej xau inductance tau dhau los ua qhov teeb meem tseem ceeb los daws qhov EMI tshwm sim los ntawm high-frequency transformers.
txo
Ob lub ntsiab lus nkag rau cov dej xau inductance ntawm me me high-frequency transformers: hluav taws xob tsim thiab txheej txheem tsim!
(1) Xaiv qhov tsim nyog cov tub ntxhais sib nqus kom txo qis inductance. Lub to taub inductance yog proportional rau lub square ntawm thawj ntug lem, thiab txo cov lem yuav ho txo qhov to inductance.
(2) Txo cov txheej rwb thaiv tsev ntawm windings. Tam sim no muaj ib txheej rwb thaiv tsev hu ua "golden film" nrog lub thickness ntawm 20-100um, thiab ib tug mem tes tawg voltage ntawm ob peb txhiab volts.
(3) Ua kom qhov sib txuas ntawm qhov sib txuas ntawm cov windings thiab txo qis inductance.
