Thermosetting SB578F / AU4V110 X PRINES txhuas solenoid valve coil

Tsis txhob raug tsis saib xyuas Parasitic Inductance, inductance coil, electromagnetic kauj

1. Nws tau qhia txog qhov uas cov parasitic inductance uas tsis tuaj yeem tsis quav ntsej yog ib nrab ntawm Parasitic Inductance uas yuav tsum tau txiav txim siab hauv PCB ntawm kev npaj.

Hauv kev npaj siab ntawm cov kev ua kom siab digital regripits, kev puas tsuaj los ntawm Parasitic Inductance ntawm kev ua haujlwm feem ntau yog tshwm sim los ntawm parasitic capacitance. Nws cov parasitic series inductance yuav ua rau lub zog ntawm bypass Capacitor thiab cov nyhuv lim ntawm tag nrho cov kab ke hluav taws xob.

2. Peb tuaj yeem siv cov mis nram qab no los xam cov kwv yees kwv yees kev lag luam inductance ntawm ib qho ntawm:

L = 5.08h [hauv (4H / d) +1] nyob qhov twg yog hais txog qhov tsis muaj nqis ntawm kev ua haujlwm ntawm, h yog qhov ntev ntawm ntawm, thiab d yog txoj kab uas hla ntawm nruab nrab lub qhov. Nws tuaj yeem pom los ntawm cov qauv uas cov cheeb ntawm lub qhov ntawm qhov cuam tshuam me ntsis ntawm kev ua haujlwm me me, tab sis qhov ntev ntawm lub qhov muaj qhov cuam tshuam loj tshaj plaws ntawm kev ua txhaum. Tseem siv cov piv txwv saum toj no, qhov tsis muaj peev xwm ntawm lub qhov tuaj yeem suav raws li: l = 5.08 x 0.0.050) = 1.015 nh. Yog hais tias lub sijhawm nce ntawm lub teeb liab yog 1ns, qhov sib npaug ntawm cov imporance yog xl = TL / T10-90 = 3.190. Qhov kev ua tsis tau zoo no tsis tuaj yeem tsis quav ntsej thaum muaj qhov tseem ceeb tam sim no. It is especially important to note that the bypass capacitor needs to pass through two vias when connecting the power layer and the stratum, so the parasitic inductance of the vias will increase exponentially.

Ua rau Kev Ua Cua Sov

Qhia thiab piav qhia qhov ua rau muaj cua sov inductance.

1. Cov hlau yog cov hlau dhau lawm, uas yuav ua rau cov tsis kam ntawm inductor kom loj heev. Raws li cov xwm txheej uas muaj txiaj ntsig zoo ntawm qhov tam sim no yog qhov tseeb, nws yog ib txwm rau tus ncej kom ua kom sov.

2, Qhov tsis tseem ceeb yog tag nrho, thiab hom kub taub hau yog tseem ntau heev.

3. Muaj kev co loj colration voltage ntawm ob qho kawg ntawm inductor, yog li cov tub ntxhais tau hloov pauv kom loj dua, uas tuaj yeem txo tus lej ntawm cov kab thiab luv cov kab ntev. Tom ntej hloov dua siab tshiab, cov me me ripple tam sim no, kev sib nqus me me, feem ntau tsis kam tiv thaiv tshav kub.