1: Lub hauv paus rau xaiv qhov dav ntawm cov ntawv luam tawm: qhov tsawg kawg nkaus qhov dav ntawm cov ntawv luam tawm muaj feem cuam tshuam rau qhov tam sim no ntws los ntawm cov xaim: cov kab dav me dhau, qhov tsis kam ntawm cov ntawv luam tawm yog loj, thiab qhov hluav taws xob poob. ntawm txoj kab yog loj, uas cuam tshuam rau kev ua haujlwm ntawm lub voj voog. Cov kab dav dav dav heev, cov xov hlau ceev tsis siab, lub rooj tsavxwm cheeb tsam nce, ntxiv rau kev nce nqi, nws tsis yog qhov tsim nyog rau miniaturization. Yog hais tias lub load tam sim no yog xam raws li 20A / mm2, thaum lub thickness ntawm cov tooj liab clad ntawv yog 0.5 MM, (feem ntau yog li ntau), tam sim no load ntawm 1MM (txog 40 MIL) kab dav yog 1 A, yog li cov kab dav yog noj li 1-2.54 MM (40-100 MIL) tuaj yeem ua tau raws li kev thov dav dav. Cov xaim hauv av thiab cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob muaj zog tuaj yeem tsim nyog ntxiv raws li lub zog loj. Ntawm cov hluav taws xob hluav taws xob qis qis, txhawm rau txhim kho cov kab hluav taws xob, qhov tsawg kawg kab dav tuaj yeem txaus siab los ntawm kev noj 0.254-1.27MM (10-15MIL). Nyob rau hauv tib lub rooj tsavxwm, lub hwj huam qaum. Cov xaim hauv av yog tuab dua li lub teeb liab xaim.

2: Kab nrug: Thaum nws yog 1.5MM (kwv yees li 60 MIL), lub rwb thaiv tsev ntawm cov kab ntau dua 20 M ohms, thiab qhov siab tshaj plaws ntawm cov kab tuaj yeem ncav cuag 300 V. Thaum kab sib nrug yog 1MM (40 MIL. ), qhov siab tshaj plaws voltage ntawm cov kab yog 200V Yog li ntawd, nyob rau hauv Circuit Court board ntawm nruab nrab thiab tsawg voltage (qhov voltage ntawm cov kab tsis ntau tshaj 200V), cov kab sib nrug yog npaum li 1.0-1.5 MM (40-60 MIL) . Hauv cov hluav taws xob tsis tshua muaj hluav taws xob, xws li cov tshuab hluav taws xob digital, nws tsis tas yuav xav txog qhov kev puas tsuaj hluav taws xob, raws li cov txheej txheem ntau lawm tso cai, tuaj yeem ua me me heev.

3: Pad: Rau 1 / 8W resistor, lub ncoo txhuas txoj kab uas hla yog 28MIL txaus, thiab rau 1 / 2 W, txoj kab uas hla yog 32 MIL, cov hlau lead lub qhov loj dhau, thiab lub ncoo tooj liab nplhaib dav kuj txo, Ua rau txo qhov adhesion ntawm lub ncoo. Nws yog ib qho yooj yim kom poob tawm, lub qhov taub yog me me heev, thiab qhov kev tso kawm ntawm cov khoom yog qhov nyuaj.

4: Kos lub voj voog ciam teb: Qhov luv tshaj plaws ntawm txoj kab ciam teb thiab cov khoom siv tus pin ncoo tsis tuaj yeem tsawg dua 2MM, (feem ntau 5MM yog qhov tsim nyog) txwv tsis pub, nws nyuaj rau txiav cov khoom.

5: Lub hauv paus ntsiab lus ntawm cov txheej txheem kev teeb tsa: A: Lub hauv paus ntsiab lus: Hauv PCB tsim, yog tias muaj ob qho tib si digital circuits thiab analog circuits hauv cov kab ke. Raws li cov high-tam sim no circuits, lawv yuav tsum tau nteg tawm nyias kom txo tau coupling ntawm systems. Nyob rau hauv tib hom Circuit Court, cov khoom raug muab tso rau hauv cov blocks thiab partitions raws li cov teeb liab ntws kev taw qhia thiab kev ua haujlwm.

6: Input signal processing unit, tso zis teeb liab tsav lub caij yuav tsum nyob ze rau ntawm lub rooj tsav xwm Circuit Court, ua rau cov tswv yim thiab cov zis teeb liab kab kom luv li sai tau, txhawm rau txo qhov cuam tshuam ntawm cov tswv yim thiab cov zis.

7: Component placement direction: Cheebtsam tsuas yog tuaj yeem teem rau hauv ob qho kev qhia, kab rov tav thiab ntsug. Txwv tsis pub, plug-ins tsis raug tso cai.

8: Element spacing. Rau nruab nrab ceev cov laug cam, qhov kev sib tw ntawm cov khoom sib xyaw me xws li cov khoom siv me me, kev txiav txim siab, thiab lwm cov txheej txheem txiav txim siab muaj feem xyuam rau cov plug-hauv thiab vuam txheej txheem. Thaum lub sij hawm yoj soldering, qhov sib nrug ntawm cov khoom yuav yog 50-100MIL (1.27-2.54MM). Loj dua, xws li noj 100MIL, kev sib xyaw ua ke hauv Circuit Court nti, feem ntau yog 100-150MIL.

9: Thaum lub peev xwm sib txawv ntawm cov khoom siv loj, qhov sib txawv ntawm cov khoom yuav tsum loj txaus los tiv thaiv kev tawm.

10: Nyob rau hauv IC, lub decoupling capacitor yuav tsum nyob ze rau lub hwj chim mov av pin ntawm lub nti. Txwv tsis pub, cov nyhuv lim dej yuav phem dua. Hauv cov kab hluav taws xob digital, txhawm rau ua kom ntseeg tau tias kev ua haujlwm txhim khu kev qha ntawm cov tshuab hluav taws xob digital, IC decoupling capacitors tau muab tso rau nruab nrab ntawm cov khoom siv hluav taws xob thiab hauv av ntawm txhua lub digital integrated circuit chip. Decoupling capacitors feem ntau siv ceramic nti capacitors nrog lub peev xwm ntawm 0.01 ~ 0.1 UF. Kev xaiv ntawm decoupling capacitor muaj peev xwm feem ntau yog raws li qhov sib txuam ntawm qhov kev ua haujlwm zaus F. Tsis tas li ntawd, 10UF capacitor thiab 0.01 UF ceramic capacitor kuj tseem xav tau ntawm cov kab hluav taws xob thiab hauv av ntawm qhov nkag ntawm lub zog hluav taws xob.

11: Lub moos tes hluav taws xob tivthaiv yuav tsum nyob ze li sai tau rau lub moos teeb liab tus pin ntawm ib nti microcomputer nti kom txo tau qhov txuas ntev ntawm lub moos Circuit Court. Thiab nws yog qhov zoo tshaj kom tsis txhob khiav cov hlau hauv qab no.