Zoo siab txais tos rau peb lub vev xaib.

Vim li cas thiaj yuav tsum muaj cov kab mob serpentine ntawm PCB pawg thawj coj saib

Ib qho kab ntawm PCB yuav ua rau ncua sijhawm rau lub teeb liab thaum nws dhau lub teeb liab ntau zaus. Lub luag haujlwm tseem ceeb ntawm kab ntsig nab yog txhawm rau them nyiaj rau qhov qeeb me me ntawm "tib pab pawg muaj feem cuam tshuam" kab teeb liab. Cov ntu no Feem ntau tsis muaj lossis tsawg dua li lwm lub cim qhia los ntawm lwm qhov kev ua logic; qhov feem ntau yog kab ntawv kab, feem ntau nws tsis tas yuav mus rau lwm qhov kev ua haujlwm logic, yog li nws qhov kev ncua yuav tsawg dua li lwm cov cim cuam tshuam.

Why should there be serpentine traces on the PCB board

Qhov sib npaug ntawm qhov ntev ntawm qhov kev kub ceev digital PCB board yog txhawm rau ncua qhov sib txawv ntawm txhua lub teeb liab nyob rau hauv ib puag ncig kom ntseeg tau tias qhov siv tau ntawm cov ntaub ntawv nyeem los ntawm cov kab ke hauv tib lub voj voog (thaum qhov sib txawv qeeb dhau ib teev dhau los, Lub voj voog tom ntej yuav nyeem tsis raug. Cov ntaub ntawv), feem ntau xav tau tias qhov sib txawv qeeb tsis pub dhau 1/4 lub voj voog ncig, kab ncua sib txawv ntawm ib chav ntev kuj tseem raug kho, ncua sijhawm cuam tshuam nrog kab dav, kab ntev, tooj liab tuab , thiab txheej txheej, tab sis ntev dhau ib txoj kab yuav ua rau cov peev txheej faib tawm thiab faib tawm inductance, yog li lub teeb liab zoo, yog li lub moos IC pins feem ntau txuas nrog rau RC txiav, tab sis kab laum serpentine tsis ua lub luag haujlwm ntawm inductance, ntawm qhov tsis sib xws, qhov inductance yuav ua rau muaj kev sib haum xeeb siab dua theem hloov pauv hauv qhov nce ntawm lub teeb liab, Ua rau muaj kev puas tsuaj ntawm cov teeb liab zoo, yog li cov kab sib txuas kab sib txuas yuav tsum muaj tsawg kawg ob zaug ntawm kab dav , qhov me me lub teeb liab nce lub sijhawm, muaj kev cuam tshuam ntau dua rau kev faib khoom muaj peev xwm thiab faib khoom inductance.

Vim tias cov ntawv thov sib txawv muaj lub luag haujlwm sib txawv, yog tias cov kab lus serpentine tshwm hauv lub khoos phis tawj tswj hwm, nws feem ntau yog ua lub lim inductor txhawm rau txhim kho kev tiv thaiv kev cuam tshuam kev muaj peev xwm ntawm Circuit Court. Serpentine kab hauv computer motherboard.

Feem ntau siv hauv qee lub moos cim, xws li CIClk, AGPClk, nws muaj ob txoj haujlwm:

1. Impedance txuam.

2. Lim inductance.

Rau qee qhov cim tseem ceeb, xws li HUBLink hauv INTEL HUB architecture. Muaj 13 kab khiav ntawm 233MHz. Qhov ntev yuav tsum nruj me ntsis sib npaug kom tshem tawm qhov phom sij uas tshwm sim los ntawm lub sijhawm qeeb. Winding yog qhov kev daws teeb meem nkaus xwb. Feem ntau hais lus, kab kev sib nrug ntawm cov kab ntsig nab yog> = 2 npaug ntawm kab dav. Cov kab nab ntawm PCI pawg thawj coj yog ua kom tau raws kab kev xav tau ntawm PCI 33MHzClock. Yog tias nws yog qhov ntsuas qhov faib tawm LC lim nyob rau hauv ib qho PCB zoo tib yam, nws kuj tseem tuaj yeem siv ua qhov inductance kauj ntawm lub xov tooj cua kav hlau txais xov, thiab luv thiab nqaim serpentine kab tuaj yeem siv ua fuse thiab lwm yam.


Sijhawm Tshaj Tawm: Aug-06-2021