Lokacin da ake buƙatar maye gurbin IC a cikin zanen IC na PCB, bari mu raba wasu shawarwari yayin maye gurbin masu zanen kaya su zama cikakke mai tsara PCB.
1. Canji kai tsaye
Canji kai tsaye yana nufin maye gurbin na asali iC tare da sauran ics ba tare da wani canji ba, kuma mahimmin aikin ba zai shafa bayan musayar injin ba bayan musayar na'ura.
Tsarin sauyawa shine: aikin aiki, samar da kayan aikin, amfani da PIN, lambar PIN da tazara na mai sauyawa IC iri ɗaya ne. Guda ɗaya na IC ba wai kawai yana nufin aiki iri ɗaya ba, har ma da dabaru iri ɗaya, wato, fitarwa da kuma amplitude na yanzu dole ne ɗaya. Alamar wasan kwaikwayon na Aiwatarwa suna nufin manyan sigogin lantarki (ko kuma babban halaye na IC), mafi girman ƙarfin iko, mafi girman ƙarfin iko, yawan ƙarfin haɓaka, kewayon da aka daidaita da fitarwa waɗanda suke kama da na asali IC. Abubuwan da ke canzawa tare da karancin iko ya kamata ya ƙara nutsuwa mai zafi.
01
Canji na wannan nau'in ic
Sauyawa na wannan nau'in IC gaba ɗaya amintacce ne. Lokacin shigar da haɗin PCB ɗin da aka haɗa, kada kuyi kuskure a cikin shugabanci, in ba haka ba, ana iya ƙone kewaya PCB lokacin da aka kunna wutar. Wasu abubuwa masu amfani da wutar lantarki guda ɗaya suna da samfurin iri ɗaya, aiki, da halayya, amma shugabanci na tsarin tsarin fil ya bambanta. Misali, tashar wutar lantarki ta hanyar ruwa ta hanyar ruwa ta hanyar ruwa mai kyau "tabbatacciya" da "mara kyau" ta farko: misali, da sauransu, misali) suna cikin daban-daban Hanyoyi: Misali na farko) suna cikin bangarori daban-daban: Misali) suna cikin bangarori daban-daban: Misali) suna cikin bangarori daban-daban: Misali) suna cikin bangarori daban-daban: Misali) suna cikin daban-daban Hanyoyi: Misali na farko) suna cikin daban-daban Hanyoyi: Misali na farko) suna cikin daban-daban
02
Canji ocs tare da wasiƙar prefix iri ɗaya da lambobi daban-daban
Muddin ayyukan PIN na irin wannan canjin daidai iri-iri ne, mai zagaye na ciki na ciki na lantarki sun sha ɗan ɗan bambanci da juna. Misali: ICLA1363 da LA1365 an sanya LA1365 a cikin sauti, na karshen yana ƙara ɗan zaɓi a cikin fil 5 fiye da na farko, kuma wasu dai daidai suke.
Gabaɗaya, wasiƙar prefix tana nuna masana'anta da kuma rukuni na da'irar PCB. Lambobin bayan wasiƙar prefix iri ɗaya ne, kuma yawancinsu za a iya maye gurbinsu kai tsaye. Amma akwai wasu ƙarin lokuta na musamman. Kodayake lambobin iri ɗaya ne, ayyukan sun bambanta gaba ɗaya. Misali, ha1364 sauti ne mai kyau, da UPC1364 launi ne na launi mai kyau; Lambar ita ce 4558, 8-PIN shine Replifier NJM4558, kuma 14-PIN ne CD4558 Digital PCB Cirluit; Don haka, ba za a maye gurbinsu biyu ba kwata-kwata. Don haka dole ne mu kalli aikin PIN.
Wasu masana'antun suna gabatar da kwakwalwan kwamfuta marasa amfani kuma a aiwatar da su zuwa samfuran da aka saƙa bayan masana'antar, da wasu ingantattun samfura don inganta wasu sigogi. Waɗannan samfuran sau da yawa suna tare da samfura daban-daban ko rarrabe ta hanyar ƙididdigar ƙira. Misali, An380 da UPC1380 za a iya maye gurbinsu kai tsaye, kuma an5620, Dg5620, da sauransu maye gurbinsu kai tsaye.
2. Canza
Canza wurin kai tsaye yana nufin hanyar da IC ɗin da ba za a iya maye gurbin kai tsaye ba ko ƙara ko cire kayan aikin PIN, da sauransu, don sanya shi mai maye gurbin IC.
Canji ka'idodi: IC din da aka yi amfani da shi a cikin sauya ICTU na iya zama daban da na asali IC tare da ayyukan PIN daban-daban, amma ya zama ya zama iri ɗaya kuma halaye ya kamata ya zama iri ɗaya; Ba a taɓa samun aikin asali na asali ba bayan musayar.
01
Canji na daban-daban ics
Ga iC kwakwalwan kwamfuta iri ɗaya, amma tare da siffofin kunshin daban-daban, kawai fil na sabon na'urar suke buƙatar sake fasalin da tsarin filayen na asali. Misali, AFTPCB Circuit CA3064 da ca306e, tsohon kunshin filastik ne tare da filayen radial, kuma ana iya haɗa su bisa ga aikin PIN. Dual-Row ican7114, An7115 da LA4100, LA4110, LA4102 sune iri ɗaya a cikin tsarin kunshin, kuma jagoran da kuma zafi da zafi nutse daidai ne 180 digiri daban-daban. A duorentioned An5620 dual dual in-line kunshin 16-PIN na PIN tare da zafi mai zafi da shayi na5620 dual a-line kunshin 18-PIN. Pin 9 da 10 suna kan gefen dama na hadewar PCB, wanda yayi daidai da zafin wanki na An5620. Sauran fil na biyu an shirya su a cikin wannan hanyar. Haɗa fil na 9 da 10 zuwa ƙasa don amfani.
02
Ayyukan da'irar PCB iri ɗaya ne amma mutum ɗaya na PIN daban ne mai canzawa lc
Za a iya aiwatar da musanya gwargwadon takamaiman sigogi da umarnin kowane irin iC. Misali, AGC da kuma siginar siginar bidiyo a cikin TV suna da bambanci tsakanin ingantacciyar polarity da mara kyau, muddin an haɗa shi da tashar fitarwa, ana iya maye gurbinsa.
03
Canji na octs tare da filastik iri ɗaya amma ayyukan fil daban-daban
Irin wannan yanayin yana buƙatar sauya canza ɓangaren ɓangare na yanki da kuma tsarin PIN, wanda ke buƙatar wasu ilimin ɓoye, cikakken bayani, da amfani da fasaha.
04
Wasu ƙafafunku ba za su zama ƙasa ba tare da izini ba
Wasu daga cikin kananan kansu a cikin na ciki daidai na ciki da kuma aikace-aikacen PCB da'irar ba alama. Lokacin da akwai filayen da ke haifar da kai, bai kamata su zama ƙasa ba tare da izini ba. Wadannan dabbobin gwangwani suna da musanya ko tanadin fil, wani lokacin kuma ana amfani dasu azaman haɗi na ciki.
05
Hade canzawa
Haɗin maye zai sake farfado da sassan PCB da ba shi da izini na Pics iri ɗaya na samfurin guda ɗaya don maye gurbin mara kyau na IC. An zartar sosai lokacin da asalin IC ba ya samuwa. Amma ana buƙatar kyakkyawar da'irar PCB a cikin IC amfani dole ne ta sami PIN na dubawa.
Makullin don daidaitaccen tsari shine don gano asalin sigogi na lantarki na OCs guda biyu waɗanda aka musanya su ga junan su, daidai na ciki na ciki, da alaƙar haɗin kai, da alaƙar haɗin kai tsakanin kayan IC. Yi hankali da ainihin aiki.
(1) jerin adadin da aka haɗa da pins na haɗin PCB kewaye bai kamata a haɗa shi ba;
(2) Don daidaita da halayen da aka maye gurbin IC, abubuwan haɗin na ɓangarorin ɓangarorin ɓangarorin ɓangaren haɗin da aka haɗa da shi ya kamata a canza shi daidai ba;
(3) Sojan wadatar wutar lantarki ya kamata ya yi daidai da wanda zai maye gurbin IC. Idan wutar lantarki ta wadataccen wutar lantarki a cikin da'irar PCB ta asali, yi ƙoƙarin rage ƙarfin lantarki; Idan wutar lantarki tayi ƙasa, ta dogara da ko sauyawa na IC na iya aiki;
(4) Bayan sauyawa, da Quiescent Ana aiki da aiki a halin yanzu na IC. Idan halin yanzu ya fi girma fiye da ƙimar al'ada, wannan yana nufin cewa da'irar PCB na iya zama da farin ciki. A wannan lokacin, ana buƙatar daidaitawa da daidaitawa. Idan riba ta bambanta da asalin, ana iya daidaita juriya game da karfin ra'ayin martani;
(5) Bayan sauyawa, shigar da fitarwa da fitarwa mai ban sha'awa na iC dole ne ya dace da asalin PCB; duba ikonsa na;
(6) Yi cikakken amfani da ramuka na PCB da ke jagorantar hukumar ta PCB yayin yin canje-canje na gaba da baya da hana kaifin kai na kai, musamman don hana kaifin kai mai ban sha'awa;
(7) Zai fi kyau a haɗa DC na yanzu a cikin jerin hanyoyin samar da wutar lantarki a gaban Power-On, kuma lura da canjin jimlar da aka haɗa da al'ada daga ƙanana.
06
Maye gurbin ici tare da abubuwan da aka gyara
Wani lokaci ana iya amfani da kayan haɗin gwiwar don maye gurbin ɓangaren da aka lalata na iC don mayar da aikinta. Before replacement, you should understand the internal function principle of the IC, the normal voltage of each pin, the waveform diagram and the working principle of the PCB circuit with peripheral components. Hakanan la'akari:
(1) Ko za a iya fitar da siginar daga aikin C kuma an haɗa shi da shigarwar tashar PCB:
(2) Ko dai siginar ta sarrafa shi ta hanyar zagaye na PCB na gaba ana iya haɗa shi zuwa matakin na gaba a cikin haɗin sigari da aikin bai kamata ya shafi manyan sigogi da aikin ba). Idan matsakaiciyar amplifier ic ya lalace, daga saba aikace-aikace na aikace-aikacen PCB, yana ƙunshe da bambancin Audio da mitar miji. Ana iya amfani da hanyar shigarwar siginar don nemo sashin da ya lalace. Idan sashin sauti amplifier ya lalace, ana iya amfani da kayan sirri maimakon.