Lub rooj tsavxwm PCB tiav yuav tsum mus dhau ntau cov txheej txheem los ntawm kev tsim mus rau cov khoom tiav. Thaum tag nrho cov txheej txheem nyob rau hauv qhov chaw, nws yuav nws thiaj li nkag mus rau qhov kev soj ntsuam txuas. Tsuas yog cov ntawv kuaj PCB yuav raug siv rau cov khoom lag luam, yog li yuav ua li cas thiaj li ua haujlwm ntawm PCB Circuit Board board tshuaj xyuas, Qhov no yog lub ntsiab lus uas txhua tus neeg txhawj xeeb heev. Cov nram qab no editor ntawm Jinhong Circuit Court yuav qhia rau koj txog cov kev paub txog ntawm Circuit Court board xeem!
1. Thaum ntsuas qhov ntsuas hluav taws xob lossis ntsuas lub waveform nrog kev sojntsuam oscilloscope, tsis txhob ua rau luv luv ntawm cov pins ntawm lub voj voog sib txuas vim yog zawv zawg ntawm cov khoom siv lead ua los yog kev sojntsuam, thiab ntsuas ntawm lub peripheral printed Circuit Court ncaj qha rau tus pin. Txhua lub sijhawm luv luv tuaj yeem ua rau kev puas tsuaj rau kev sib txuas ua ke. Koj yuav tsum tau ceev faj ntau dua thaum kuaj lub tiaj-pob CMOS integrated circuits.
2. Nws tsis raug tso cai siv cov hlau soldering rau soldering nrog lub hwj chim. Xyuas kom tseeb tias cov hlau soldering tsis raug them. Ground lub plhaub ntawm cov hlau soldering. Ceev faj nrog MOS Circuit Court. Nws muaj kev nyab xeeb dua los siv 6-8V qis-voltage circuit hlau.
3. Yog tias koj yuav tsum tau ntxiv cov khoom siv sab nraud los hloov qhov puas ntawm qhov sib xyaw ua ke, cov khoom me me yuav tsum tau siv, thiab cov xaim yuav tsum tsim nyog kom tsis txhob muaj cov kab mob parasitic coupling, tshwj xeeb tshaj yog lub hwj chim amplifier integrated circuit thiab preamplifier circuit yuav tsum yog. tuav tau zoo. Hauv av terminal.
4. Nws yog nruj me ntsis txwv tsis pub ncaj qha mus kuaj TV, suab, video thiab lwm yam khoom siv yam tsis muaj lub hwj chim cais transformer nrog cov twj paj nruag thiab cov khoom siv nrog cov plhaub hauv av. Txawm hais tias cov xov tooj cua dav dav hauv xov tooj cua muaj lub zog hloov hluav taws xob, thaum koj tuaj yeem ntsib nrog ntau lub TV tshwj xeeb lossis cov khoom siv suab, tshwj xeeb tshaj yog cov khoom siv hluav taws xob lossis cov khoom siv hluav taws xob siv, koj yuav tsum xub paub seb lub chassis ntawm lub tshuab puas raug them. , txwv tsis pub nws yog qhov yooj yim heev Lub TV, suab thiab lwm yam khoom siv uas raug them nrog lub phaj hauv qab ua rau lub zog luv luv ntawm cov khoom siv hluav taws xob, uas cuam tshuam rau kev sib xyaw ua ke, ua rau muaj kev cuam tshuam ntxiv ntawm qhov txhaum.
5. Ua ntej tshuaj xyuas thiab kho cov kev sib txuas ua ke, koj yuav tsum xub paub txog kev ua haujlwm ntawm kev sib xyaw ua ke siv, lub hauv paus Circuit Court, lub ntsiab hluav taws xob tsis zoo, lub luag haujlwm ntawm txhua tus pin, thiab qhov qub voltage ntawm tus pin, lub waveform thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm Circuit Court tsim los ntawm peripheral Cheebtsam. Yog tias cov xwm txheej saum toj no tau ua tiav, kev tshuaj xyuas thiab tshuaj xyuas yuav yooj yim dua.
6. Tsis txhob txiav txim siab tias qhov kev sib xyaw ua ke yuav puas yooj yim. Vim tias feem ntau cov kab hluav taws xob sib xyaw ua ke ncaj qha, ib zaug ib lub voj voog txawv txav, nws yuav ua rau muaj ntau yam kev hloov pauv, thiab cov kev hloov no tsis tas yuav tshwm sim los ntawm kev puas tsuaj ntawm cov kev sib txuas. Tsis tas li ntawd, qee zaum, qhov ntsuas qhov ntsuas hluav taws xob ntawm txhua tus pin yog qhov sib txawv ntawm qhov qub Thaum cov nqi sib tw los yog nyob ze rau ib leeg, nws tsis tas yuav txhais tau tias qhov sib xyaw ua ke zoo. Vim tias qee qhov ua txhaum cai yuav tsis ua rau muaj kev hloov pauv hauv DC voltage.