Kev cai tswj kev cai thiab kev siv pcb teeb tsa rau hloov fais fab mov
Tam sim no, vim muaj hluav taws xob hluav taws xob tsim los ntawm kev hloov cov khoom siv hluav taws xob, uas yog cov khoom siv hluav taws xob kom raug rau cov khoom siv fais fab tau dhau los ua qhov tseem ceeb heev.
Feem ntau, lub zog mov tsim tau zoo kawg nkaus ntawm daim ntawv yuav tsis ua haujlwm zoo thaum lub sijhawm pib kev deb ntawm ntau yam teeb meem nrog nws cov PCB teeb meem. Piv txwv li, rau ib kauj ruam-down hloov fais txheej ntawm cov neeg siv khoom siv hluav taws xob, tus tsim qauv yuav tsum muaj peev xwm kom muaj peev xwm paub cov khoom siv hluav taws xob hauv lub zog tswj hwm ntawm Circuit Court ntawm Circuit Court. Txawm li cas los xij, yog tus tsim qauv kho txhua yam hauv lub zog hluav taws xob uas muaj cov khoom siv digital, qhov teeb meem yuav yog qhov hnyav heev. Qhov txheej txheem ntawm kev hloov fais fab mov pcb yog txawv kiag li ntawm cov kab mob digital pcb. Hauv cov txheej txheem Circuit Digout, ntau cov chips digital tuaj yeem raug txiav tawm los ntawm PCB software, thiab cov kab txuas ntawm cov chips tuaj yeem txuas tau los ntawm PCB software. Hloov lub zog hluav taws xob tsim los ntawm cov tanetting yuav tsis ua haujlwm zoo. Yog li, cov tsim qauv yuav tsum tau tswv yim thiab nkag siab cov kev cai kom raug rau PCB txheej txheem ntawm hloov cov khoom siv fais fab.
Cov cai tswj kev cai rau PCB txheej ntawm kev mus hloov fais fab mov
Lub peev xwm capacitance ntawm bypass ceramic ceracitors yuav tsum tsis txhob loj dhau, thiab lawv txoj kev ua kom muaj kev ua rau txhua qhov kev ua rau txhua tus. Parallel kev sib txuas ntawm ntau capacitors tuaj yeem txhim kho lub zog loj customerance tus yam ntxwv ntawm capacitors
Thaum kev ua haujlwm ntau ntawm lub capacitor yog qis dua cov fo, lub peev xwm capactrance dassance zc txo qis nrog kev nce ntau zaus; Thaum cov kev ua haujlwm ntawm lub capacitor yog saum toj no fo, lub peev xwm capactrance dc. Thaum kev ua haujlwm ntau ntawm lub capacitor ua rau cov neeg muaj peev xwm, lub peev xwm immactrance yog sib npaug ntawm nws cov lus sib npaug sib luag (resr).
Electrolytic capacitors feem ntau muaj kev muaj peev xwm loj thiab muaj kev sib npaug loj sib npaug. Vim tias nws cov kev rov qab muaj zaus tsawg zaus, nws tsuas siv tau rau cov lim dej tsawg zaus. TANTALUM capacitors feem ntau muaj kev muaj peev xwm loj thiab muaj peev xwm sib npaug ntau dua li cov hluav taws xob hluav taws xob thiab tuaj yeem siv rau hauv nruab nrab kom muaj zog siab. Ceramic capacitors feem ntau muaj cov cim hluav taws xob me me, yog li lawv cov peev txheej tantolitors thiab tantalum capacitors thiab tantalum capacitors thiab tantalum capacitors thiab tantalum capacitors thiab tantorum fulting thiab bypass circuits. Vim tias qhov tseeb uas lub zaus uas muaj ib zaug ntawm cov ceramic Capacitors Ceramic yog siab tshaj qhov uas muaj Capacitance cericic cericicitors, yog li ntawd
Thaum xaiv Bypass Capacitors, nws tsis yog xav tau tsuas yog xaiv cov ceramic capacitors nrog ntau ntau capensivance muaj txiaj ntsig. Txhawm rau txhim kho cov kev nquag ntawm cov capacitors, ntau capacitors nrog cov yam ntxwv sib txawv tuaj yeem siv nyob rau hauv parallel. Daim duab 1 (a) qhia cov nyhuv txhim kho tau tom qab ntau capinitors nrog cov yam ntxwv sib txawv tau txuas nrog thaum mus sib txuas. Nws tsis yog qhov nyuaj kom nkag siab txog qhov tseem ceeb ntawm txoj cai txheej txheem no los ntawm kev soj ntsuam. Daim duab 1 (B) Qhia cov txheej txheem sib txawv rau kev siv hluav taws xob sib txawv (vin) kom thauj khoom (RL) ntawm PCB. Txhawm rau kom txo cov ESL ntawm lub taub lim capacitor (c), cov xaim ntawm lub capacters yuav tsum tau ua kom tau: thiab vin tsis zoo rau rl yuav tsum tau ze li sai tau.
