Thermosetting SB578F/AU4V110X jerin gubar solenoid bawul nada

Kada a manta da inductance parasitic, inductance coil, electromagnetic coil

1. An gabatar da cewa inductance na parasitic wanda ba za a iya watsi da shi ba shine rabi na inductance na parasitic wanda ya kamata a yi la'akari da shi a cikin PCB ta hanyar tsarawa.

A cikin shirye-shiryen da'irori masu sauri na dijital, lalacewar da ke haifar da inductance na vias yawanci yakan fi wanda ƙarfin ƙarfin parasitic ke haifarwa. Inductance ta parasitic jerin inductance zai raunana gudunmawar capacitor na kewaye da kuma tasirin tacewa na dukkan tsarin samar da wutar lantarki.

2. Za mu iya amfani da dabarar da ke gaba don ƙididdige ƙimar inductance na parasitic na ta hanyar:

L=5.08h[In(4h/d)+1] inda l ke nufin inductance na via, h shine tsayin ta, kuma d shine diamita na rami na tsakiya. Ana iya gani daga ma'anar cewa diamita na ta hanyar rami yana da tasiri kadan akan inductance, amma tsawon ta hanyar rami yana da tasiri mafi girma akan inductance. Har yanzu ana amfani da misalin da ke sama, ana iya ƙididdige inductance na rami kamar: l = 5.08 x 0.050 [a (4x0.050/0.010)+1] = 1.015 NH. Idan lokacin tashin siginar shine 1nS, madaidaicin madaidaicin shine XL=TL/T10-90=3.190. Ba za a iya yin watsi da wannan nau'in tawaya ba lokacin da akwai babban mitar halin yanzu. Yana da mahimmanci a lura cewa capacitor na kewayawa yana buƙatar wucewa ta hanyoyi biyu lokacin haɗa layin wutar lantarki da stratum, don haka inductance parasitic na vias zai ƙaru sosai.

Abubuwan da ke haifar da dumama inductance

Gabatarwa da bayyana dalilin dumama inductance.

1. Wayar tana da bakin ciki sosai, wanda zai haifar da juriya na inductor ya zama babba. A ƙarƙashin yanayin cewa ƙimar inganci na yanzu ta tabbata, yana da al'ada don sandar ta yi zafi.

2, shagwaba ya cika, irin wannan zazzabi ma ya yadu sosai.

3. Akwai babban ƙarfin girgizawa a duka ƙarshen inductor, don haka an canza ainihin ainihin ya zama mafi girma, wanda zai iya rage yawan juyawa kuma ya rage tsawon layin. Juyin gaba, ƙaramar ripple halin yanzu, ƙaramar asarar maganadisu, galibi juriya zafi.