Fais fab mov Circuit Board layout technology cov cai thiab kev siv
Txij li thaum hloov cov khoom siv hluav taws xob tsim hluav taws xob hluav taws xob uas tuaj yeem cuam tshuam rau kev ua haujlwm zoo ntawm lawv cov khoom siv hluav taws xob, kev siv hluav taws xob zoo PCB cov txheej txheem ua qhov tseem ceeb heev.
Feem ntau, cov khoom siv hluav taws xob uas zoo kawg nkaus tsim rau ntawm daim ntawv yuav tsis ua haujlwm zoo thaum pib ua haujlwm vim muaj ntau yam teeb meem nrog PCB layout ntawm lub hwj chim mov. Piv txwv li, rau cov neeg siv khoom siv hluav taws xob ntawm cov kauj ruam-down hloov hluav taws xob schematic, tus tsim qauv yuav tsum muaj peev xwm paub qhov txawv ntawm cov khoom siv hluav taws xob hluav taws xob thiab cov khoom siv hluav taws xob tswj hluav taws xob ntawm daim duab hluav taws xob no, tab sis yog tias tus tsim qauv yuav yog tag nrho cov khoom ntawm cov khoom siv hluav taws xob. cov khoom siv hluav taws xob no zoo li lawv yog cov digital circuits, tib yam khoom, ces qhov teeb meem yuav loj heev. Hloov fais fab mov PCB layout thiab digital circuit PCB layout yog txawv kiag li. Hauv kev teeb tsa digital Circuit Court, ntau cov chips digital tuaj yeem raug teeb tsa los ntawm PCB software thiab cov kab txuas ntawm cov nti tuaj yeem txuas nrog PCB software. Nrog rau qhov tsis siv neeg layout ntawm layout ntawm lub switching fais fab mov yuav tsis ua hauj lwm zoo. Yog li ntawd, cov neeg tsim qauv yuav tsum paub thiab nkag siab txog qhov raug hloov hluav taws xob hloov hluav taws xob PCB layout technology txoj cai.
Hloov fais fab mov PCB layout technology txoj cai
Bypass ceramic capacitor muaj peev xwm tsis tuaj yeem loj dhau, thiab nws cov kab mob parasitic series inductance yuav tsum tsawg. Ntau lub capacitors nyob rau hauv parallel tuaj yeem txhim kho qhov siab zaus impedance yam ntxwv ntawm capacitor
Thaum lub capacitor khiav hauj lwm zaus hauv qab no fo, capacitance impedance Zc nrog rau qhov nce nyob rau hauv zaus thiab txo; thaum lub capacitor kev khiav hauj lwm zaus saum toj no fo, capacitance impedance Zc yuav ua zoo li inductive impedance nrog nce nyob rau hauv zaus thiab nce; Thaum lub capacitor khiav hauj lwm zaus ze rau fo, capacitance impedance yog sib npaug rau nws qhov sib npaug series kuj (RESR).
Electrolytic capacitors feem ntau muaj lub peev xwm loj thiab qhov sib npaug loj sib npaug ntawm cov inductance. Vim nws qhov tsawg resonant zaus, nws tsuas yog siv tau rau kev lim dej tsawg. Tantalum capacitors feem ntau muaj lub peev xwm loj thiab me me sib npaug series inductance, yog li lawv cov zaus resonant yuav siab dua li ntawm electrolytic capacitors, thiab lawv tuaj yeem siv rau hauv nruab nrab thiab siab zaus lim. Porcelain nti capacitor capacitance thiab sib npaug series inductance feem ntau me me, yog li nws cov zaus resonance ntau dua li electrolytic capacitors thiab tantalum capacitors, yog li nws tuaj yeem siv rau hauv high-frequency filtering thiab bypass circuits. Raws li lub resonant zaus ntawm me me capacitance ceramic capacitors yuav siab tshaj qhov resonant zaus ntawm loj capacitance ceramic capacitors, yog li nyob rau hauv Kev Xaiv ntawm bypass capacitors tsis tuaj yeem xaiv cov nqi capacitance yog siab dhau heev lawm ceramic capacitors. Txhawm rau txhim kho cov yam ntxwv siab ntawm cov capacitors, ntau lub capacitors nrog cov yam ntxwv sib txawv tuaj yeem siv ua ke.
