Hauv kev tsim ntawm hloov fais fab fais fab, yog tias PCB board tsis tsim nyog tsim nyog, nws yuav radiate ntau hauv hluav taws xob hluav taws xob. Tus PCB board tsim nrog ruaj khov ua haujlwm tam sim no tau ntsuas ntawm cov teeb meem uas xav tau kev mloog ntawm txhua kauj ruam, tus qauv PCB tuaj yeem yooj yim los ntawm kauj ruam!

1. Cov qauv tsim los ntawm Schematic rau PCB

Tsim cov khoom tiv thaiv -> cov tswv yim tswv yim NetList -> Tsim Kev Siv Hluav Taws Xob -> Phau Ntawv Xov Tooj -> Xyuas -> Cam Output.

2. Parameter chaw

Qhov kev ncua deb ntawm cov kav hlau uas nyob ib sab yuav tsum muaj peev xwm ua tau raws li kev nyab xeeb hluav taws xob, thiab txhawm rau pab txhawb kev ua haujlwm thiab ntau lawm, yuav tsum yog dav li sai tau. Qhov tsawg kawg nkaus spacing yuav tsum yog tsawg kawg yog tsim nyog rau lub voltage zam. Thaum cov cua sov yog qhov qis, qhov sib nrug ntawm cov paib yuav muaj peev xwm yuav tsum nce ntxiv. Rau cov teeb liab kab nrog qhov sib txawv loj ntawm cov siab thiab theem qis, qhov kev sib tw yuav tsum yog luv li sai tau thiab yuav tsum nce ntxiv. Feem ntau, teeb tsa txoj kab mus ncig kom ntau dua 1 hli los ntawm ntug ntawm lub ncoo rau ntawm cov khoom lag luam uas luam tawm, yog li kom zam dhau qhov tsis xws luag thaum lub sijhawm ua. Thaum cov kab sib txuas txuas nrog cov ntaub qhwv yog nyias, qhov sib txuas ntawm cov ntaub qhwv thiab cov kab yuav tsum tau tsim los rau hauv cov qauv poob. Qhov zoo dua ntawm qhov no yog tias cov ntaub qhwv tsis yooj yim rau tev, tab sis cov kab thiab cov ntaub qhwv tsis yooj yim txiav tawm.

3. Cov txheej txheem sib txawv

Kev xyaum tau ua pov thawj tias txawm tias tus sacuit schematic yog tsim kom raug thiab cov ntawv luam tawm kev ntseeg tau yog tsis tsim nyog rau kev ntseeg tau ntawm cov khoom siv hluav taws xob. Piv txwv li, yog tias ob txoj kab sib txuas ntawm cov ntawv luam tawm yog ze ua ke, nws yuav ua rau cov teeb liab WaveTs thiab lub suab nrov tiv thaiv kev sib tw ntawm qhov kawg ntawm tus kab mob kis; Kev cuam tshuam los ntawm kev txiav txim siab tsis raug hluav taws xob ntawm lub zog thiab hauv av yuav ua rau cov khoom kom raug kev txom nyem cov laug cam, thaum tsim qauv luam ntawv yuav tsum tau them rau qhov tseeb. Txhua lub pob hluav taws xob fais fab muaj plaub lub voj pib tam sim no:

(1) AC Circuit Coator ntawm Lub Zog Hloov
(2) Cov zis Rectifier AC Circuit Court

(3) Cov voj voos tam sim no ntawm cov paib teeb liab
(4) cov zis thauj khoom tam sim no lub voj Cov voj voog Voj them cov nqi ntawm cov ntawv sau cia los ntawm kev kwv yees DC tam sim no. Lub lim dej capacitor tseem ceeb pab ua qhov broadband cia khoom cia; Ib yam li ntawd, cov zis lim lim kuj tseem siv los khaws lub zog high-zaus los ntawm cov zis rectifier. Nyob rau tib lub sijhawm, lub zog DC ntawm cov zis hluav taws xob laim yog muab tshem tawm. Yog li no, cov terminals ntawm cov tswv yim thiab cov zis lim hluav taws xob muaj peev xwm tseem ceeb heev. Cov tswv yim thiab tawm cov loops tam sim no tsuas yog txuas nrog lub zog hluav taws xob los ntawm lub taub lim hluav taws xob ntawm lub lim dej feem ntau; Yog tias kev sib txuas ntawm cov lus qhia / tso tawm lub voj thiab lub zog hloov / Rectifier lub davhlau ya nyob twg tsis tuaj yeem txuas nrog lub tswv yim los ntawm cov tswv yim lossis cov khoom siv lim dej. AC voj ntawm lub hwj chim hloov thiab AC ntxoo ntawm lub rectifier muaj siab-amplitude trapezoidal. Cov dej tsaws no muaj cov harmonic Cheebtsam thiab lawv cov zaus yog ntau dua li cov muaj nuj nqi ntau zaus ntawm kev hloov pauv. Lub ncov siab heev tuaj yeem yog li 5 zaug cov tswv yim txuas ntxiv / tso tawm DC tam sim no amplitude. Lub sijhawm hloov pauv feem ntau yog 50ns. Ob lub voj feem ntau yog nquag siv rau electromagnetic cuam tshuam, yog li no ac loops yuav tsum muab tso ua ntej lwm cov ntawv luam tawm hauv lub zog. Peb lub ntsiab ntawm txhua lub voj yog cov lim capacitors, hluav taws xob hloov lossis rectifiers lossis rectifers, thiab inductors. Lossis cov hloov pauv yuav tsum muab tso rau ib sab ntawm ib leeg, thiab cov haujlwm sib xyaw yuav tsum tau hloov kho kom ua txoj kev tam sim no ntawm lawv kom luv.
Txoj hauv kev zoo tshaj plaws los txhim kho ib qho hloov hluav taws xob muab cov txheej txheem zoo ib yam li nws cov hluav taws xob tsim. Cov txheej txheem tsim qauv zoo tshaj plaws yog raws li hauv qab no:

◆ Muab lub transformer
Tsim Hluav Taws Xob Hloov Hluav Taws Xob
Destrier Desoures Desuction Tam sim Voj
◆ Tswj Circuit Court Txuas Nrog Power Cegruit
Tsim cov qauv tsim tawm tam sim no thiab cov lus tso tawm ntawm cov hluav taws xob, thaum tso tawm txhua cov hauv kev ua haujlwm ntawm Circuit Court, cov hauv paus ntsiab lus hauv qab no yuav tsum tau ua tiav:

(1) Ua ntej, xav txog lub PCB loj. Thaum tus PCB loj loj dhau lawm, cov ntawv luam tawm yuav ntev, lub ntsiab yuav nce ntxiv, cov suab nrov yuav txo qis, thiab tus nqi yuav nce ntxiv; Yog tias lub PCB loj me me me me heev, cov cua sov tsis zoo yuav tsis yog qhov zoo, thiab cov kab yuav yooj yim. Cov duab zoo tshaj plaws ntawm Circuit Coffe Board yog duab dhos, thiab cov kev sib piv yog 3: 2 lossis 4: 3. Cov Cheebtsam nyob ntawm ntug ntawm cov Circuit Court Board feem ntau tsis tsawg tshaj li ntug ntawm Circuit Court board

(2) Thaum tso cov cuab yeej, xav txog kev sib tw yav tom ntej, tsis tuab heev;
(3) Nqa cov tseem ceeb ntawm txhua qhov kev ua haujlwm raws li lub chaw nruab nrab thiab nteg tawm ib puag ncig nws. Cov Cheebtsam yuav tsum yog tusyees, zoo nkauj thiab txo qis ntawm cov PCB, txo qis ntawm cov khoom siv, thiab cov khoom siv tsis sib thooj yuav tsum kaw kom ze rau cov khoom siv
(4) Rau cov voj voog ua haujlwm ntawm cov haujlwm siab, cov faib tawm cov tsis muaj qee yam ntawm cov khoom siv yuav tsum tau txiav txim siab. Feem ntau, cov kev yuav tsum tau npaj rau hauv parallel kom ntau li ntau tau. Nyob rau hauv txoj kev no, nws tsis yog tsuas yog zoo nkauj, tab sis kuj yooj yim rau nruab thiab muab tshuaj Weld, thiab yooj yim rau cov khoom siv loj.
(5) Npaj txoj haujlwm ntawm txhua chav ua haujlwm Circuit Court raws li cov teeb tsa Circuit Court, yog li cov teeb liab yog khaws cia tib yam li ua tau.
(6) Thawj qhov tseem ceeb ntawm kev teeb tsa yog kom ntseeg tias cov xov hluav taws xob, them nyiaj rau kev txav lub cuab yeej thaum tsiv cov khoom siv nrog kev sib txuas ua ke.
(7) Txo cov voj thaj tsam kom ntau li ntau tau los ua kom duppress lub hluav taws xob cuam tshuam ntawm kev hloov fais fab tuag.

4. Cov kab hlau hloov hluav taws xob muaj cov ntsiab lus siab-zaus

Txhua kab ntawv luam tawm ntawm PCB tuaj yeem ua raws li tus kav hlau txais xov. Qhov ntev thiab dav ntawm cov ntawv luam tawm yuav cuam tshuam nws lub impedance thiab inductance, yog li cuam tshuam rau cov lus teb ntau zaus. Txawm luam tawm cov kab uas dhau cov cim qhia tau sib txuas xov tooj hluav taws xob ntawm cov kab kev sib tw thiab ua rau cov teeb meem sib tw (thiab txawm tias cuam tshuam nrog cov phiajcim). Yog li ntawd, tag nrho cov ntawv luam tawm ac tam sim no yuav tsum tau tsim los ua kom luv thiab dav li txhua yam txuas nrog cov kab luam tawm thiab lwm yam hluav taws xob yuav tsum tau muab tso rau. Qhov ntev ntawm cov ntawv luam tawm yog sib luag thiab kev cuam tshuam, thiab qhov dav yog qhov ua tau siab tshaj plaws rau kev ua txhaum thiab cuam tshuam ntawm cov kab ntawv luam tawm. Qhov ntev xav txog lub nthwv dej ntawm cov ntawv luam tawm. Qhov ntev ntev, qis dua ntawm cov kab ntawv luam tawm tuaj yeem xa thiab tau txais hluav taws xob tsis muaj zog, thiab nws tuaj yeem ua hluav taws xob ntau lub zog. Raws li qhov loj ntawm cov ntawv luam tawm cov boardcuit Court board tam sim no, sim nce qhov dav ntawm cov kab hluav taws xob kom txo lub voj tsis kam. Nyob rau tib lub sijhawm, ua cov kev taw qhia ntawm lub zog kab thiab cov kab hauv av sib txuas nrog cov kev taw qhia tam sim no, uas pab txhim kho cov suab nrov. Kev cog ntawv yog hauv qab ceg ntawm plaub tam sim no loops ntawm hloov lub tshuab hluav taws xob hloov. Nws ua lub luag haujlwm tseem ceeb heev raws li ib qho kev sib txuam nrog kev siv rau Circuit Court. Nws yog ib txoj hauv kev tseem ceeb kom tswj kev cuam tshuam. Yog li ntawd, qhov kev tso chaw ntawm cov xaim hluav taws xob yuav tsum ua tib zoo txiav txim siab hauv kev teeb tsa. Nws sib xyaw ua ke yuav ua rau tsis muaj peev xwm ua haujlwm.

Cov ntsiab lus hauv qab no yuav tsum tau them siab rau hauv av hlau tsim:

A. Muaj kev xaiv ib qho kev xaiv ib sab. Feem ntau, qhov kawg ntawm lub lim capacitor yuav tsum yog qhov txuas ntxiv rau lwm cov ntsiab lus hauv av rau ob peb lub siab tam sim no. Cov av hauv av ntawm tib qib Circuit Court yuav tsum tau sib sau ua ke ntawm cov hauv paus hniav uas tau hloov pauv, thiab cov impedance txoj kev hloov ntawm lub peev xwm ntawm txhua feem ntawm Circuit Court thiab ua kev cuam tshuam. Hauv qhov hloov hluav taws xob muab, nws cov hlau hluav taws xob thiab cov hluav taws xob muaj ntau lub voj rau hauv ob peb lub voos tam sim no muaj ntau lub zog ntawm cov xaim hluav taws xob Tias lub zog hluav taws xob yog ruaj khov thiab tsis yooj yim rau tus kheej-siab.

B. Thicken lub galloing hlau ntau li ntau tau. Yog tias cov kav hlau hauv av yog cov khoom siv hluav taws xob heev, cov av muaj peev xwm hloov pauv nrog cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob kom tsis ruaj khov, thiab cov tshuaj tiv thaiv kev ua suab nrov. Yog li no, xyuas kom meej tias txhua qhov chaw nres tsheb loj tam sim no siv cov kab luam tawm kom luv thiab dav dav li sai tau, thiab cov kab txuas ntxiv tau. Nws yog qhov zoo dua tias cov kab av yog dav dua li cov kab hluav taws xob. Lawv txoj kev sib raug zoo yog: Hauv av Kab> Fais Fab Kab> Kab cim kab. Yog tias ua tau, hauv av kab qhov dav yuav tsum muaj ntau dua 3mm, thiab ib txheej tooj liab loj kuj tseem siv tau los ua av hlau. Txuas cov chaw tsis siv rau ntawm cov ntawv luam tawm raws li cov xaim hauv av. Thaum ua yeeb yam thoob ntiaj teb, cov hauv paus ntsiab lus hauv qab no yuav tsum tau ua raws:

(1) Kev taw qhia kev taw qhia: Los ntawm cov kev pom ntawm lub vuam nto, kev npaj ntawm cov cheebtsam yuav tsum yog ua tau nrog cov qauv schemram. Cov kev taw qhia xaim yuav tsum tau ua ke nrog cov xaim hluav taws xob ntawm cov kab kev ncig ntawm hluav taws xob, vim tias muaj ntau yam tsis muaj nyob rau hauv vuam nto thaum lub tsev ntau lawm. Yog li ntawd, nws yooj yim rau kev tshuaj xyuas, debugging thiab txij nkawm nyob rau hauv ntau lawm (ceeb toom: nws hais txog lub tshuab hluav taws xob thiab cov kev xav tau ntawm cov tshuab teeb tsa thiab kev ua vaj huam sib luag).

(2) Thaum tsim cov duab hluav taws xob, cov xaim yuav tsum tsis txhob khoov kom ntau li ntau tau, lub ces kaum ntawm cov xaim yuav tsum ≥90 degrees, thiab cov kab yuav tsum yooj yim thiab meej.

(3) Kev hla kev hla hauv cov ntawv luam tawm. Rau cov kab uas yuav hla, koj tuaj yeem siv "Drilling" thiab "winding" los daws lawv. Ntawd yog, cia ua "Laum" los ntawm kev sib txawv nyob rau hauv lwm cov deedors, capacitors, thiab "cua" los ntawm ib kawg ntawm cov hlau uas muaj tus ntoo khaub lig. Hauv cov xwm txheej tshwj xeeb, yuav ua li cas nyuaj ntawm Circuit Court yog, nws tseem tso cai los ua kom yooj yim tus qauv. Siv cov xov hlau rau choj los daws cov teeb meem hla ciam teb. Vim tias cov rooj tsavxwm sab-pawg tau saws, cov khoom siv hauv kab nyob rau saum npoo av thiab cov khoom sib thooj yog nyob hauv qab. Yog li ntawd, cov cuab yeej hauv kab tuaj yeem sib tshooj nrog cov khoom sib dhos saum npoo av thaum lub sijhawm layout, tab sis sib tshooj ntawm cov ntaub qhwv yuav tsum tau zam.

C. Cov tswv yim hauv av thiab tso zis hauv av Qhov no hloov fais fab tuag yog qhov ntsuas hluav taws xob tsawg-dC. Yog tias koj xav tawm tswv yim cov zis voltage rov qab mus rau thawj lub transformer, yog li tom qab ntawv sau tooj liab ntawm ob sab, lawv yuav tsum tau txuas nrog ua ke rau ib qho chaw.

5. Kuaj

Tom qab cov ntaub ntawv xov hluav taws xob tiav lawm, nws yog ib qho tsim nyog los xyuas seb cov cai tswj kev ua raws li cov cai uas tau tsim tsa cov cai uas tau tsim tsa cov qauv luam tawm. Feem ntau kuaj cov kab thiab kab, kab thiab cov ntaub qhwv ntsej muag, los ua qhov tsis sib xws los ntawm qhov, los ntawm qhov tsim nyog, thiab lawv yuav tsum tau tsim nyog. Txawm hais tias qhov dav ntawm cov kab hluav taws xob thiab cov kab hauv av yog qhov tsim nyog, thiab seb yog qhov chaw ua kom pom cov kab hauv av hauv PCB. Nco tseg: qee qhov yuam kev tuaj yeem tsis quav ntsej. Piv txwv li, ib feem ntawm cov qauv piav qhia ntawm qee cov txuas tau muab tso rau sab nraud pawg thawj coj ntawm cov kab ke, thiab cov yuam kev yuav tshwm sim thaum kuaj xyuas cov kab ke; Ib qho ntxiv, txhua zaus cov xaim hluav taws xob thiab Vias tau hloov kho, tus tooj liab yuav tsum tau rov ua tau.

6. Rov xyuas dua raws li "PCB daim ntawv txheeb"

Cov ntsiab lus suav nrog cov cai tsim, txheej ntsiab lus, kab dav, txuas, ntaub, thiab ntawm chaw. Nws tseem yog ib qho tseem ceeb kom rov saib lub zog ntawm cov txheej txheem ntaus ntawv, cov hlau hluav taws xob, cov xaim hluav taws xob, cov ntaub qhwv thiab kev sib txuas ntawm capacation thiab kev sib txuas ntawm capacitors, thiab lwm yam.

7. Cov teeb meem xav tau mloog hauv kev tsim qauv thiab tawm cov ntaub ntawv gerber

a. Cov khaubncaws sab nraud povtseg txheej (hauv qab txheej)
b. Thaum teeb tsa cov duab kab xev silk, tsis txhob xaiv cov txheej txheej saum toj kawg nkaus (txheej saum toj kawg nkaus (txheej hauv qab) thiab kab, cov kab ntawv, kab ntawv, kab ntawv ntawm cov kab xev silk. Thaum teeb txheej txheej ntawm txhua txheej, xaiv Pawg Thawj Coj. Thaum teeb tsa cov duab kab xev silk, tsis txhob xaiv cov zauv sib tham, xaiv hom phiaj, kab ntawv, kab, txheej ntawm txheej saum toj kawg nkaus (hauv qab. Thaum tsim cov ntaub ntawv dr drilling, siv cov chaw teeb tsa ntawm PowerPCB thiab tsis hloov pauv.