Lub rhiab heev ntawm cov khoom siv hluav taws xob tau nce siab dua, uas yuav tsum muaj cov cuab yeej siv kom muaj peev xwm tiv thaiv kev cuam tshuam. Yog li ntawd, PCB tsim tau ua nyuaj dua. Yuav ua li cas txhawm rau txhim kho kev tiv thaiv kev cuam tshuam ntawm PCB tau dhau los ua ib qho ntawm cov teeb meem tseem ceeb uas ntau tus engineers tau saib xyuas. Kab lus no yuav qhia qee cov lus qhia txog kev txo cov suab nrov thiab kev cuam tshuam electromagnetic hauv PCB tsim.

Cov hauv qab no yog 24 lub tswv yim los txo cov suab nrov thiab electromagnetic cuam tshuam hauv PCB tsim, sau tseg tom qab xyoo tsim:

(1) Cov chips ceev ceev tuaj yeem siv los hloov cov chips ceev. High-speed chips yog siv rau hauv qhov chaw tseem ceeb.

(2) Ib qho resistor tuaj yeem txuas rau hauv series kom txo tau qhov dhia ntawm cov npoo sab sauv thiab qis ntawm cov tswj Circuit Court.

(3) Sim muab qee hom damping rau relays, thiab lwm yam.

(4) Siv lub moos qis tshaj plaws uas ua tau raws li qhov xav tau ntawm lub system.

(5) Lub tshuab hluav taws xob moos yog ze li sai tau rau lub cuab yeej siv lub moos. Lub plhaub ntawm lub quartz siv lead ua oscillator yuav tsum tau grounded.

(6) Kaw lub moos nrog cov xaim hauv av thiab khaws lub moos kom luv li sai tau.

(8) Qhov kawg ntawm MCD yuav tsum tau txuas nrog siab, lossis hauv av, lossis txhais tau tias yog qhov kawg ntawm cov zis, thiab qhov kawg ntawm qhov sib xyaw ua ke uas yuav tsum tau txuas nrog lub zog hluav taws xob hauv av yuav tsum tau txuas nrog, thiab yuav tsum tsis txhob tso tseg. .

(9) Tsis txhob tawm ntawm qhov chaw tawm tswv yim ntawm lub rooj vag Circuit Court uas tsis siv. Qhov zoo tshaj plaws input davhlau ya nyob twg ntawm lub unused operational amplifier yog grounded, thiab qhov tsis zoo input davhlau ya nyob twg yog txuas nrog rau cov zis davhlau ya nyob twg.

(10) Rau cov ntawv luam tawm, sim siv 45-fold kab es tsis txhob 90-fold kab kom txo tau cov emissions sab nraud thiab coupling ntawm high-frequency signals.

(11) Cov ntawv luam tawm tau muab faib raws li qhov zaus thiab qhov hloov pauv tam sim no, thiab cov khoom siv suab nrov thiab cov khoom tsis muaj suab nrov yuav tsum sib nrug deb.

(12) Siv ib qho taw tes fais fab thiab ib qho taw tes hauv av rau ib leeg thiab ob chav vaj huam sib luag. Cov kab hluav taws xob thiab kab hauv av yuav tsum yog tuab li ua tau. Yog tias kev lag luam pheej yig, siv lub rooj tsav xwm multilayer los txo cov capacitive inductance ntawm lub hwj chim mov thiab hauv av.

(13) Lub moos, tsheb npav, thiab nti xaiv cov cim yuav tsum nyob deb ntawm I / O kab thiab cov khoom sib txuas.

(14) Cov kab hluav taws xob analog hluav taws xob thiab cov khoom siv hluav taws xob siv hluav taws xob yuav tsum nyob deb li deb tau ntawm cov kab hluav taws xob digital, tshwj xeeb tshaj yog lub moos.

(15) Rau cov khoom siv A / D, cov khoom siv digital thiab qhov analog yuav zoo dua ua ke dua li hla.

(16) Lub moos kab perpendicular mus rau I / O kab muaj kev cuam tshuam tsawg dua li cov kab I / O thaum uas tig mus, thiab lub moos tiv thaiv pins nyob deb ntawm I / O cable.

(17) Cov pins tivthaiv yuav tsum yog luv li sai tau, thiab tus pins capacitor decoupling yuav tsum luv li sai tau.

(18) Cov kab tseem ceeb yuav tsum tuab li ua tau, thiab cov av tiv thaiv yuav tsum tau ntxiv rau ob sab. Txoj kab siab ceev yuav tsum yog luv thiab ncaj.

(19) Cov kab rhiab rau lub suab nrov yuav tsum tsis txhob sib npaug mus rau qhov siab tam sim no, kev kub ceev hloov kab.

(20) Tsis txhob siv cov xov hlau hauv qab quartz siv lead ua thiab nyob rau hauv cov khoom siv suab nrov.

(21) Rau cov teeb liab tsis muaj zog, tsis txhob tsim cov voj voog tam sim no nyob ib ncig ntawm cov kab hluav taws xob tsawg.

(22) Tsis txhob tsim lub voj voog ntawm lub teeb liab. Yog tias nws tsis tuaj yeem zam tau, ua kom lub voj voog me me li sai tau.

(23) Ib qho decoupling capacitor rau ib qho kev sib xyaw ua ke. Ib tug me me high-frequency bypass capacitor yuav tsum tau ntxiv rau txhua tus electrolytic capacitor.

(24) Siv lub peev xwm loj tantalum capacitors lossis juku capacitors es tsis txhob siv cov khoom siv hluav taws xob electrolytic kom them thiab tso tawm lub zog cia khoom. Thaum siv tubular capacitor, rooj plaub yuav tsum tau grounded.