Isiteshi sokuhlinzeka nge-LUBANG yifekthri yokuqala kuphela kanye ne-ejenti esemthethweni yefekthri yokuqala, ingajabulela isevisi efanayo noma engcono nefektri yokuqala ngokwemibandela yokusekelwa kwezobuchwepheshe, ukuhlaziywa kokwehluleka kwesampula, ukuzinza kwe-supply chain nokunye.Umthombo nekhwalithi yezimpahla kungokoqobo, kusobala futhi kuthembekile.Uma ikhasimende lidinga, ubuchwepheshe be-Haohaixin bungahlinzeka ngamavawusha afanele nge-oda langempela lomphakeli we-ejenti esemthethweni.Ukulawula kwethu okuqinile kwamashaneli okuhlinzeka kungumnyombo wokulawula kwethu ikhwalithi.Inkampani isiphumelele isitifiketi se-ISO.Ukuqinisekisa ukuzinza kochungechunge lokuhlinzekwa kwamakhasimende, ukufinyelela okusheshayo kusampula nezidingo zokuthengwa kweqoqo elincane nezivumelwano zamanani okuthengwa kweqembu yinani esilinikeza amakhasimende.
I-ic chip iwuhlobo olukhethekile lwemiphumela yocwaningo lobuchwepheshe, inani elikhulu lokuthuthukiswa kwama-ic chips, langena ngokusemthethweni emkhakheni wokucwaninga kwe-chip yamandla, ukuthengwa kwempahla kudinga ukunakwa okuningi, abantu bayaqhubeka nokuphatha amandla ukuze balondoloze indlela yokuthenga ye-ic power chip, okulandelayo kubheka izici zokuthengwa kwe-ic chip ezidinga ukunaka nendlela eyisisekelo, yokukhetha.
1. Naka izindleko zokuthengwa kwama-ic chips
Okokuqala, i-ic chip iyi-chip enokuqukethwe okwengeziwe kobuchwepheshe, ukuthengwa kwe-ic chip kunaka ukuma kwemakethe kanye nokusetshenziswa kwezindleko zamandla, inani iphuzu lempahla, kodwa ayikwazi ukuchitha imali, ngolwazi lokuthenga ubuchwepheshe, ngemali. ngokumelene nezindleko, kuyisimo esidingekayo somhlaba.
2. Naka ukuhlukaniswa kokuthengwa kwe-ic chip
Kunezindlela eziningi zokuthenga ama-ic chips, ngoba izigaba ezahlukene, indlela yokuthenga iphinde ibe nomehluko ocashile, njengama-AD/DC modulation IC chips adinga i-low-voltage power control circuit, ngakolunye uhlangothi i-high-voltage control. shintsha i-transistor, uma kungenjalo vumelana nezinye izinhlobo zama-ic chips ezididekile, isici samandla ngokuvamile silawulwa endaweni efanele, ukuthengwa kwempahla kuyadingeka ukuze unake ukuze ubone.
3.ic abakhiqizi bokuthengwa kwe-chip ukukhetha ukunakwa
ukuthengwa kwe-ic chip ukusiza amabhizinisi ukuthi aqonde kangcono abakhiqizi abahlukene, anganaka umehluko phakathi kwabo, ukukhetha kuyinkinga, okokuqala ngokusho kwenhloko-dolobha yokusebenza komkhiqizi ukubona isikali sokukhiqiza, bese kuba yizisebenzi zezobuchwepheshe bona ikhwalithi ye-chip, ukuthengwa kwe-ic chip, abakhiqizi ukwenza ukuhlaziya okukhethekile.
Izici ezihlukene zokuthengwa kwe-ic chip zitholakala ngokuya ngezidingo zama-ic chips ahlukene, isimo esithile siyahlaziywa, ukukhetha kuhlukene, ukwethenjwa kukhulu, futhi isinqumo asikwazi ukwenziwa ngokungenasisekelo, sithinta umphumela wokusetshenziswa kwama-ic chips. .
I-chip yesekethe ehlanganisiwe iyingxenye ebalulekile yokwakhiwa kwemikhiqizo ye-elekthronikhi, ihlangabezana ne-chip elungisiwe noma i-chip embi, ukwehluleka kokusebenza komkhiqizo nezinye izinkinga zingase zenzeke.Ngakho-ke, yini yokuqala, entsha, evuselelwe kabusha?
1. Ukuthunyelwa kwangempela kubhekisela efektri yokuqala ekhiqiziwe, ihlukaniswe yaba eyokuqala evela kwamanye amazwe neyasekhaya.
2. Igama elithi "izimpahla ezintsha ngobuningi" lisetshenziswa kakhulu engxenyeni yama-IC chips, futhi incazelo ingokuyinhloko ngale ndlela elandelayo:
a.Lo mkhiqizo awukhiqizwa yimboni yokuqala, ungase ukhiqizwe abanye abakhiqizi, kodwa ngomkhiqizo wangempela, okungukuthi, izimpahla zomgunyathi ezinophawu.
b.Izimpahla zikhiqizwa imboni yokuqala, ngoba ezinye izinto ezingafanelekile ezibangela ukuthi umkhiqizo wehluleke ukuhlangabezana nezinga, kodwa umsebenzi usalungile, ngalesi sikhathi ifektri yokuqala izokwehlisa intengo futhi iyilahle ngezinye iziteshi. .
c.Ukukhiqizwa kwasekuqaleni, okusetshenzisiwe, okupholishiwe, okufakwe ethini, bese kudayiswa, okubuye kwaziwe nge-SAN entsha.
I-3, izimpahla ezivuselelwe zibhekisela kumkhiqizo ovela embonini yasekuqaleni ngemva kokukhiqizwa, ngemva kokusetshenziswa, kukhona ukugqokwa okuthile, ngemva kokucubungula, ukuze ukubukeka kwayo kubuyiselwe eduze nefektri yokuqala esanda kukhiqizwa.
I-Triode iyingxenye evame ukusetshenziswa kumasekethe kagesi, kodwa ingase yehluleke ngesikhathi sokusetshenziswa.Amakhono asebenzayo nezindlela zokuxazulula iphutha le-triode zimi kanje:
1. Ungasebenzisa i-multimeter ukuhlola ukuze uhlole ukuthi i-polarity, i-amplification yamanje, ukuvuza kwamanje kanye neminye imingcele ye-transistor ijwayelekile.Uma kutholakala i-anomaly, ungacabanga ukufaka esikhundleni se-triode.
2. Ungasebenzisa i-oscilloscope ukuze ubone isimo sokusebenza se-transistor, hlola ukuthi isignali ijwayelekile, ukuthi kukhona ukuhlanekezela nezinye izinkinga.Uma inkinga itholakala, ungacabangela ukufaka esikhundleni se-triode noma ukulungisa amapharamitha wesifunda.
3. Ngaphezu kwalokho, ungasebenzisa futhi isibhamu sokushisa noma itafula lokushisela ukushisa ukuze uhlole ukuthi kukhona yini iphutha elishisayo ku-transistor.Uma uthola inkinga, ungacabanga ukufaka esikhundleni se-transistor noma ukuyilungisa.
Ukuze uxazulule iphutha le-triode, kuyadingeka ukucabangela izici eziningi ngokucophelela, futhi usebenzise izindlela ezifanele zokutholwa nokulungisa.
Abantu bangafaka izinhlelo ezithile ezimisiwe kudivayisi ye-MCU.Ikhompyutha ye-chip eyodwa ingathola ikhodi yohlelo enkumbulweni ngesikhathi senqubo yokusebenza, bese yenze imisebenzi enengqondo, ukuze ikwazi ukwenza imisebenzi ehlobene ngokuvumelana nezidingo zekhodi.Inqobo nje uma i-MCU ivaliwe, uhlelo ku-MCU luzovalwa.
Empilweni ehlakaniphile, i-MCU isibe uhlelo lokulawula oluyinhloko lwamadivayisi athile ahlakaniphile.Ezimpilweni zabantu nasezinsizeni zokukhiqiza, kungase kube nezilawuli ezincane yonke indawo, njengamadivaysi athile esikhathi, amathuluzi okulawula okuzenzakalelayo nokunye.I-SCM inomsebenzi wokulawula okuzenzakalelayo futhi isetshenziswa kabanzi.Yonke imikhiqizo eyimishini esetshenziswa empilweni yabantu izoqukatha i-SCM edidiyelwe.Isibonelo, omakhalekhukhwini esibasebenzisayo kanye namathoyizi athile ezingane azobe efakwe izilawuli ezincane ezi-1 kuya kwezi-2.
Emkhakheni wokufaka isicelo, ukusetshenziswa okuyinhloko kwe-single chip microcomputer enye imishini ezishintshayo, engasekelwe kubuchwepheshe be-chip microcomputer ukuguqula imishini yendabuko kanye nemishini kagesi, ukuze imishini ethile yendabuko nekagesi ifinyelele ukulawula okuzenzakalelayo. .Ngokwesibonelo, ukusetshenziswa kwamakhompiyutha ane-single-chip kungalawula iziphephetha-moya nama-air conditioner, okungawakhuthaza ukuba adlale indima eqinile, ukuze abantu bakwazi ukulawula kalula imishini ethile nekagesi.
Amapharamitha wokusebenza we-TDK capacitor ayizinkomba ezibalulekile zokuhlola ikhwalithi yawo nokusetshenziswa okuvamile, futhi ngale mingcele, angasiza abantu ukuba bakhethe futhi basebenzise imikhiqizo kagesi noma kagesi ngendlela efanele.
Amapharamitha okusebenza abalulekile we-TDK capacitor ikakhulukazi afaka izici ezilandelayo:
1. I-voltage yokusebenza elinganiselwe: ibhekisela ku-voltage ephezulu yokusebenza okuqhubekayo endaweni ebekiwe yokusetshenziswa.Le parameter inquma i-voltage ephezulu i-capacitor engakwazi ukumelana nayo kumjikelezo, ukweqa le voltage kungabangela umonakalo ku-capacitor.
2. Amandla okuzisholo kanye nokuchezuka okuvumelekile: Umthamo omakiwe amandla okuzisholo we-capacitor, kodwa kukhona iphutha phakathi komthamo we-capacitance, ngakho-ke kuyadingeka ukuqonda ubudlelwano phakathi kokuchezuka nomthamo we-capacitance.Le parameter ibaluleke kakhulu ukuqinisekisa ukusebenza okunembile kwe-capacitor kumjikelezo.
3. Amandla e-Dielectric: ikhono le-capacitor ukumelana namandla kagesi ngaphandle kokubhujiswa.Lena ipharamitha eyinhloko yokuhlola ukuthi ama-capacitor angasebenza ngokuzinza ezindaweni zamandla kagesi aphezulu.
4. Ukulahlekelwa: Amandla adliwe yi-capacitor ngenxa yokushisa abizwa ngokuthi ukulahlekelwa kwe-chip capacitor.Le parameter ibonisa ukulahlekelwa kwamandla kwe-capacitor ohlelweni lokusebenza, okubaluleke kakhulu ekuhloleni ukusebenza kahle nempilo yesevisi ye-capacitor.
5. Ukusebenza kwe-insulation: ikakhulukazi kuhlanganisa ukumelana nokufakwa kwe-insulation, isikhathi esingashintshi kanye nokuvuza kwamanje.Ukumelana nokufakwa kwe-insulation kubonisa inani lokumelana le-insulation material ngaphakathi kwe-capacitor, futhi iyinkomba ebalulekile yokuhlola isimo sokuvuza se-capacitor.Ukungaguquguquki kwesikhathi kanye nokuvuza kwamanje nakho kuyimingcele ebalulekile yokuhlola ukusebenza kokufakwa kwama-capacitor.
6. I-temperature coefficient: Ubudlelwano phakathi kokushintsha kwezinga lokushisa nokushintsha kwe-capacitance.Le parameter ibonisa ukuzinza kokusebenza kwama-capacitor ezindaweni ezihlukene zokushisa, okubaluleke kakhulu ukuqinisekisa ukusebenza okuthembekile kwama-capacitor ezindaweni eziyinkimbinkimbi.
Okungenhla kuyinkomba yokuhlola ukusebenza kwama-capacitor e-TDK.Kunconywa ukuthi uhlole ngokucophelela imanuwali yomkhiqizo kanye neshidi lokucaciswa lapho uthenga ama-capacitor ukuze uqonde inani elithile kanye nobubanzi bokusetshenziswa kwamapharamitha okusebenza ahlukahlukene ukuze uqinisekise ukuthi ama-capacitor angakwazi ukuhlangabezana nezidingo zangempela zokusetshenziswa.
Lapho ukhetha i-on-board capacitor yemoto efanelekile, izici ezilandelayo eziyinhloko zidinga ukucatshangelwa:
1. Umthamo: Khetha umthamo ofanele we-capacitance ngokusho kwezidingo zesistimu ye-electronic yemoto ukuze uqinisekise ukuthi i-capacitor inganikeza umthamo owanelisayo wokugcina amandla ukuze uhlangabezane nezidingo zesifunda.
2. I-Voltage: I-voltage elinganiselwe ye-capacitor kufanele ihambisane ne-voltage yesistimu ye-electronic yemoto ukuze kuqinisekiswe ukuthi i-capacitor ingasebenza ngokujwayelekile ngaphakathi kobubanzi be-voltage yesistimu.
3. Ububanzi bokushisa: Ngenxa yokuthi indawo yokusebenza ngaphakathi kwemoto ingase ibe yinkimbinkimbi, kuyadingeka ukuqinisekisa ukuthi i-capacitor ekhethiwe ingasebenza ngokujwayelekile ebangeni lokushisa elibanzi.
4. Ukuthembeka: Khetha ama-capacitor aphumelele ukuhlolwa kokwethembeka futhi ahlangabezane nezindinganiso zesitifiketi semboni yezimoto ukuze uqinisekise ukuzinza komsebenzi wayo nekhwalithi.
I-5.ESR (ukumelana nochungechunge olulinganayo) : I-ESR inomthelela obalulekile ekuzinzeni kokusebenza namandla esistimu ye-elektroniki yemoto, futhi i-capacitor ene-ESR ephansi kufanele ikhethwe.
6. Imodi yesikali nedivayisi: Cabangela ukuthi ingabe isikali nemodi yedivayisi ye-capacitor iyahlangabezana yini nezidingo zokuklama zesistimu ye-elekthronikhi yemoto, okuhlanganisa nosayizi nesisindo sendawo ehlala kuyo nokuthi ingabe izinsimbi zokulungisa ezikhethekile ziyadingeka yini.
7. Izindleko: Ngaphansi kwesisekelo sokwanelisa izidingo zokusebenza, izindleko nokusebenza kwezindleko zama-capacitor kubhekwa njengokufeza ukukhetha okongayo nokunengqondo.
Kafushane, lezi zici ezingenhla zicatshangelwa ekukhetheni ama-capacitor ezinga lezimoto ezimotweni ezifanele.Kunconywa ukuthi ubhekisele kumininingwane yomkhiqizo womphakeli kanye nolwazi lobuchwepheshe lapho ukhetha, noma uthintane nochwepheshe ukuze uhlolwe futhi udluliselwe.
1. Ukuze unqume izigxobo ezinhle nezingezinhle kusukela ekubukeni, umkhawulo omuhle we-voltage yensimbi yesilawuli se-voltage diode tube body uyisicaba, futhi umkhawulo ongemuhle uyi-semicircular.Umzimba we-diode ovalwe ngepulasitiki, ekugcineni kwe-electrode eyinegethivu, omunye umkhawulo we-electrode ephozithivu ephrintiwe ngezimpawu zombala.Uphawu lwe-diode yokulawula alucacile, ungasebenzisa futhi i-multimeter ukuhlukanisa i-polarity yayo, indlela yokulinganisa i-diode evamile iyafana, okungukuthi, ifayela le-multimeter R * 1k, amapeni amabili axhunywe kuma-electrode amabili i-diode yokulawula, kala umphumela, bese ulungisa izilinganiso zepeni ezimbili.Emiphumeleni emibili yokulinganisa, lapho inani lokumelana lilincane kakhulu, ipeni lewashi elimnyama lixhunywe ku-electrode ephozithivu ye-diode yokulawula, futhi ipeni lewashi elibomvu lixhunywe ku-electrode engemihle ye-diode yokulawula.Ukumelana okuhle nokubi kwe-diode yokulawula kuncane noma akupheli, okubonisa ukuthi i-diode yokulawula inephutha noma yonakele.
2. Ivelu kagesi engu-0 ~ 30 v ikalwa ngokuphakelwa kwamandla kagesi we-DC oqhubekayo olungisekayo, idiode yesilawuli esiyi-13 v elandelayo, i-voltage ephumayo yokuphakelwa kwamandla okulawulwayo ingalungiswa ibe ngu-15 v, futhi amandla olayini bomama osebenzayo kuphela 1.5 I-kΩ yamanje yokumelana nomkhawulo ikalwa ngemva kokuthi i-Zener diode ixhunywe ku-cathode, futhi i-power-Zener diode ilungile, futhi futhi i-voltage ye-Zener diode ikalwa nge-multimeter, futhi ukufundwa okulinganiselwe yinani le-voltage ye-Zener diode. .Uma inani le-diode yesilawuli se-voltage likhulu kuno-15V, ukunikezwa kwamandla okulawula i-voltage kulungiswa kube ngaphezu kuka-20V.Amamitha we-Megohm angaphansi kuka-1000V angasetshenziswa futhi ukunikeza amandla okuhlola ama-diode alawulwayo.Indlela yile: imitha ye-megohm i-Zener diode ye-electrode engalungile, imitha ye-megohm terminal negative kanye nesigaba esihle se-Zener diode, kanye imitha ye-megohm iphathwa ngokuhambisana nemithethonqubo, ngesikhathi esifanayo, i-multimeter iqapha amandla kagesi. kuzo zombili iziphetho ze-Zener diode (iphrofayili ye-voltage ye-multimeter kufanele incike kunani le-voltage ezinzile), isiqondiso se-voltage ye-multimeter izinzile, futhi inani le-voltage ye-Zener diode yinani le-voltage ezinzile.Uma inani le-voltage elizinzile le-voltage regulator diode likalwa, libonisa ukuthi i-diode ayizinzile.
Uma ucubungula ukulawula kwe-EMI, onjiniyela bokuklama kanye nonjiniyela bezinga lebhodi le-PCB kufanele bacabangele kuqala ukukhetha kwe-IC chip.Izici ezithile zamasekhethi ahlanganisiwe njengohlobo lwephakheji, amandla kagesi achemile nobuchwepheshe be-chip (isb. i-CMOS, i-ECI) inomthelela omkhulu ekuphazamisekeni kozibuthe kagesi.
1. Umthombo wokuphazamiseka wesekethe kagesi ohlanganisiwe
Imithombo ye-PCB yesekethe ehlanganisiwe ye-EMI ikakhulukazi ihlanganisa : I-voltage yesiginali ye-EMI kanye nesignali yamanje ebangelwa imvamisa yesiginali yegagasi eliyisikwele ekugcineni kokuphumayo, okukhiqiza inkambu kagesi kanye nenkundla kazibuthe ebangelwa i-capacitor kanye nokungeniswa kwe-chip ngokwayo ukuguqulwa kwesekethe edidiyelwe yedijithali ukusuka ku-logic ephezulu ukuya phansi noma ukusuka ku-logic ephansi ukuya ku-logic ephezulu.
Igagasi lesikwele elikhiqizwe i-IC chip liqukethe izingxenye ze-sinusoidal kanye ne-harmonic ezinobubanzi befrikhwensi ebanzi, akha izingxenye zefrikhwensi yokuphazamiseka kagesi ezithinta onjiniyela nochwepheshe.Imvamisa ye-EMI ephakeme kakhulu, eyaziwa nangokuthi i-EMI yokudlulisa i-bandwidth, iwumsebenzi wesikhathi sokukhuphuka kwesiginali (hhayi imvamisa yesiginali).
Inani ngalinye le-voltage kumjikelezo lihambisana ne-current ethile, futhi yamanje ngayinye ihambisana ne-voltage.Lapho okukhiphayo kwe-IC kuguqulwa kusuka phezulu okunengqondo kuya kokuphansi ngokunengqondo noma ukusuka phansi ngokunengqondo kuya phezulu ngokunengqondo, lawa mandla kagesi esignali kanye namagagasi esignali akhiqiza izindawo zikagesi nezikazibuthe, futhi imvamisa ephakeme kakhulu yalezi zindawo zikagesi nezizibuthe umkhawulokudonsa wokudlulisela.Amandla kagesi namandla kazibuthe kanye nenani lemisebe yangaphandle, hhayi kuphela umsebenzi wesikhathi sokukhuphuka kwesignali, kodwa futhi kuncike kukhwalithi ye-capacitor kanye nokulawulwa kwe-inductance phakathi kwesiteshi sesignali kusukela emthonjeni kuya endaweni yokulayisha, ngakho-ke i-PCB umthombo wesignali utholakala, futhi umthwalo utholakala kwezinye izifunda ezihlanganisiwe, isifunda esihlanganisiwe ebhodini lesifunda singase sibe ku-PCB noma singabikho.Ukuze ulawule ngempumelelo ukugxambukela kwe-electromagnetic, kuyadingeka ukuthi unganaki kuphela amandla ayo kanye ne-inductance, kodwa futhi namandla kanye ne-inductance ekhona ku-PCB.Njengomklamo we-PCB, ukwakheka kwephakheji ye-IC nakho kungaba nomthelela omkhulu ku-EMI.
Amaphakheji wesekethe ahlanganisiwe ngokuvamile afaka i-chip esekelwe ku-silicon, i-PCB encane yangaphakathi, kanye nephedi ye-solder.Isicwecwana se-silicon sifakwe esicwecweni esincane se-PCB 64 se-silicon ngokubopha ukuxhumana phakathi komugqa nephedi, singabuye sixhunywe ngokuqondile kwelinye iphakheji elincane i-PCB eqaphela isignali namandla ku-silicon wafer kanye nokuxhumana phakathi kwephakeji ehambisanayo. izikhonkwane ephaketheni, ukuze ubone isignali kanye ne-node yamandla ye-silicon wafer ngaphandle.
Ukuvuza kwe-Capacitor (i-impedance ephansi ye-insulation) uhlobo oluvame kakhulu lokuhluleka, futhi izimbangela zalo eziyinhloko zingahlukaniswa zibe izici zangaphakathi ohlelweni lokukhiqiza kanye nezici zangaphandle ohlelweni lokukhiqiza.Izimbangela zokuvuza kwe-chip capacitor zihlukaniswe izinhlobo ezimbili, enye iyinkinga yangaphakathi, kanti enye inkinga yangaphandle.
Okokuqala, izici zangaphakathi
1. Ize
Isikhala esakhiwe ukuhwamuka kwezinto zangaphandle ku-capacitor ngesikhathi sokucwiliswa.Ama-Voids angaholela kumasekethe amafushane phakathi kwama-electrode kanye nokuhluleka kukagesi okungenzeka.Ama-voids amakhulu awagcini nje ukunciphisa i-IR, kodwa futhi anciphisa amandla asebenzayo.Uma ivuliwe, kungenzeka ukuthi kubangele ukushisa kwendawo emgodini ngenxa yokuvuza, ukunciphisa ukusebenza kwe-insulation ye-ceramic medium, kubhebhethekise ukuvuza, okuholela ekuqhekekeni, ukuqhuma, ukuvutha nezinye izenzakalo.
2. Sintering Crack
I-sintering crack ngokuvamile ibangelwa ukupholisa okusheshayo enqubweni ye-sintering futhi ivela ohlangothini oluqondile lwe-electrode edge.
3. Ukudangala
I-stratification ivame ukukhiqizwa ngemva kokunqwabelanisa, ngenxa yokungalungi kahle kwe-lamination noma ukukhishwa kwenjoloba, ukucwiliswa okunganele, umoya oxubile phakathi kwezingqimba, ukungcola kwangaphandle kanye nokuqhekeka okumangelengele okuvundlile.Kungenzeka futhi ukuthi ukunwetshwa okushisayo kwezinto ezihlukene ngemuva kokuxuba akufani.
Okwesibili, izici zangaphandle
1. Ukushaqeka okushisayo
Ukushaqeka okushisayo kwenzeka ikakhulukazi ekufakweni kwamagagasi, ukushintsha okusheshayo kwezinga lokushisa, okuholela ekuqhekekeni phakathi kwama-electrode ngaphakathi kwe-capacitor, ngokuvamile adinga ukutholwa ngesilinganiso, ukubonwa ngemva kokugaya, ngokuvamile imifantu emincane, kudingeka kusetshenziswe ingilazi yokukhulisa amandla ukuze kuqinisekiswe, izimo ezimbalwa kuzoba nemifantu ebonakalayo.
Kulokhu, kunconywa ukuthi usebenzise i-reflow welding, noma unciphise izinga lokushisa ngesikhathi se-wave soldering (akukho ngaphezu kwe-4 ~ 5 ° C / s), futhi ulawule izinga lokushisa elingaphansi kuka-60 ° C ngaphambi kokuhlanza iphaneli.
2. Ukucindezeleka kwangaphandle kwemishini
Ngenxa yokuthi ingxenye eyinhloko ye-MLCC i-ceramic, ekubekweni kwezingxenye, amapuleti angaphansi, izikulufu nezinye izinqubo, kungenzeka ukuthi ukucindezeleka komshini kukhulu kakhulu ukuze kubangele ukuthi i-capacitor incinywe futhi iphuke, okuholela ekuhlulekeni okungenzeka kokuvuza.Ngalesi sikhathi, i-crack ngokuvamile i-oblique, iqhekeka kusukela ekuhlanganeni kwetheminali kanye nomzimba we-ceramic.
3. Ukufuduka kwe-solder
Ukushisela endaweni enomswakama ophezulu kungase kuholele ekufudukeni kwe-solder kuzo zombili iziphetho ze-capacitor, futhi uma kuxhunywe ndawonye, ukuvuza nokujikeleza okufushane kungase kubangele.
1. Kukhona amabhrendi agunyaziwe ngaphezulu
Uma nje ujwayelene ne-mos tube imikhiqizo enjalo yezingxenye zikagesi, uzokwazi ukuthi kunemikhiqizo eminingi eyaziwayo evela kwamanye amazwe, futhi lapho uqonda abakhiqizi be-mos tube, yiqiniso, kufanele uqale unake ukuthi imikhiqizo yokubambisana yabakhiqizi yaphesheya kwezilwandle zanele.I-Mingary Technology iye yaba nenani lemikhiqizo yokungenisa kwamanye amazwe yeziqu zokugunyazwa ezisemthethweni eminyakeni eminingi edlule, ngakho-ke umenzi uqongelele iminyaka eyishumi yesipiliyoni sokuhlinzeka.
2, anganikeza izixazululo ezifanele
Ngezinye izikhathi amakhasimende ahlangabezana nezinkinga ngokwawo, ngenxa yokuthi abanalo ulwazi olwanele, akucaci ukuthi bangaxazulula kanjani kangcono, kodwa abakhiqizi be-mos tube abaqeqeshiwe bahlukile, futhi ngokuqinisekile bazobe becacile ukuthi yiziphi izixazululo ezingavumela amakhasimende ukuthi athenge imikhiqizo efanele.Uma nje isidingo siphakanyiswa, umenzi anganikeza ngokushesha isisombululo esifanele.
3. Ungakhathazeki ngokushoda kwempahla
Inqobo nje uma ukwazi ukubambisana nabakhiqizi abajwayelekile be-ejenti abangochwepheshe, akunandaba ukuthi mingaki imikhiqizo oyidingayo, noma amamodeli emikhiqizo ayivelakancane, ungavumela abakhiqizi baxazulule izinkinga ngokuhlinzeka ngokucebile namamodeli aphelele nezinye izinzuzo.Njengoba isitoko sanele, inqobo nje uma isitoko siqinisekisiwe, izimpahla zingathunyelwa maduze.
Bheka lapha, kufanele sazi ukuthi yibaphi abakhiqizi be-tube be-mos abangochwepheshe futhi abanokwethenjelwa, empeleni, inqobo nje uma amandla abakhiqizi, bengagcina ubudlelwano bokubambisana besikhathi eside nabo.Ngoba izinga lenkonzo nalo lihle kakhulu, ngakho-ke uma uthola inkinga ngomkhiqizo, ungaphinda uxhumane nabasebenzi ngesikhathi sokubhekana nayo.
Ngokuthuthuka okusheshayo kwezingxenye, kunamamodeli ahlukahlukene we-triode, futhi imingcele eyisisekelo yemodeli ngayinye ye-triode ihlukile, futhi yiziphi izinyathelo okufanele ziqashelwe ekuthengweni kwe-triode, nokuthi wazi kanjani imingcele eyisisekelo ye-triode .Ake sikhulume ngakho namuhla.
Khetha i-triode kumele ibe yingcweti kumapharamitha ayisisekelo we-triode, futhi kufanele ibe yingcweti yefrikhwensi yesici, umsindo namandla okukhiphayo we-triode.
1. Imvamisa yesici fT.Ngokukhula kwamandla okukhiphayo, umthamo omkhulu wokusebenza we-triode ungase uncishiswe, futhi i-frequency fT ehambisana no-β=1 ibizwa ngokuthi i-frequency frequency fT ye-triode.Ekwakhiweni nasekukhiqizeni amasekhethi e-elekthronikhi, i-triode kumafrikhwensi aphezulu, imvamisa ephakathi, i-oscillator neminye imigqa kufanele ikhethwe nge-electrode capacitance encane, futhi imvamisa yayo eyisici Fr kufanele ibe izikhathi ezi-3 kuye kweziyi-10 amandla okukhipha.Uma imakrofoni engenantambo yenziwa, imvamisa yesici se-triode 9018 kufanele ithathwe ngaphezu kwe-600NHz.
2. Ukukhethwa komsindo namandla okukhiphayo.Lapho wenza ama-amplifiers aphansi-frequency, imingcele eyinhloko efana nomsindo namandla okukhipha we-triode iyacatshangelwa.Kutuswa ukukhetha ithubhu ene-Iceo yamanje yokungena encane, ngoba i-Iceo encane, kungcono ukuthembeka kwezinga lokushisa kwe-amplifier.Kusekhethi yokukhipha okuphansi, uma ishubhu encane yokukhipha amandla ahambisanayo e-push-pull ikhethiwe, amandla okukhipha ukulahlekelwa kufanele abe ngaphansi noma alingane no-1W, i-electrode yamanje enkulu kufanele ibe ngaphansi noma ilingane no-1.5A, futhi umkhawulo I-voltage esebenza ngakolunye uhlangothi ingu-50 ~ 300V.
