LUBANG muab channel tsuas yog thawj lub Hoobkas thiab tus neeg sawv cev ntawm lub Hoobkas thawj, tuaj yeem txaus siab rau qhov kev pabcuam zoo ib yam lossis zoo dua nrog lub Hoobkas qub hauv cov ntsiab lus ntawm kev txhawb nqa, kev ntsuas tsis ua haujlwm, cov saw hlau ruaj khov thiab lwm yam.Lub hauv paus thiab qhov zoo ntawm cov khoom yog tiag tiag, pob tshab thiab ntseeg tau.Yog tias tus neeg siv khoom xav tau, Haohaixin thev naus laus zis tuaj yeem muab cov ntawv pov thawj cuam tshuam nrog tus thawj coj tus neeg muag khoom xaj xaj.Peb qhov kev tswj hwm nruj ntawm cov khoom xa khoom yog nyob ntawm qhov tseem ceeb ntawm peb cov kev tswj xyuas zoo.Lub tuam txhab tau dhau ISO daim ntawv pov thawj.Txhawm rau kom muaj kev ruaj ntseg ntawm cov neeg siv khoom lag luam, kev nkag mus sai rau cov qauv thiab cov khoom siv me me yuav tsum tau thiab pab pawg yuav cov nqi sib cog lus yog tus nqi peb muab rau cov neeg siv khoom.
ic nti yog ib hom tshwj xeeb ntawm kev tshawb fawb kev tshawb fawb, ntau ntawm kev loj hlob ntawm ic chips, officially nkag mus rau hauv lub teb ntawm lub hwj chim nti kev tshawb fawb, kev yuav khoom xav tau ntau yam kev saib xyuas, cov neeg txuas ntxiv mus rau lub hwj chim tswj tswj txoj kev yuav khoom ntawm ic zog nti, lub nram qab no yuav siv sij hawm saib cov yam ntawm ic nti procurement yuav tsum tau them sai sai rau thiab yooj yim, xaiv txoj kev.
1. Ua tib zoo saib tus nqi yuav khoom ntawm ic chips
Ua ntej tshaj plaws, ic nti yog ib nti nrog ntau cov ntsiab lus, ic nti procurement them nyiaj mloog mus rau qhov chaw ua lag luam thiab kev siv cov nqi hluav taws xob, tus nqi ntawm cov khoom muag, tab sis tsis tuaj yeem siv nyiaj, nrog kev paub los yuav cov cuab yeej technology, nrog nyiaj. tiv thaiv tus nqi, yog qhov tsim nyog ntawm lub ntiaj teb.
2. Ua tib zoo saib xyuas kev faib khoom ntawm ic nti
Muaj ntau txoj hauv kev los yuav ic chips, vim tias nws yog pawg sib txawv, txoj hauv kev ntawm kev yuav khoom kuj muaj qhov sib txawv me me, xws li AD / DC modulation IC chips xav tau hluav taws xob qis hluav taws xob tswj Circuit Court, ntawm qhov tod tes yog kev tswj hluav taws xob siab. hloov transistor, txwv tsis pub pom zoo nrog rau lwm hom ic chips tsis meej pem, lub zog qhov tseem ceeb yog feem ntau tswj nyob rau hauv txoj hauj lwm zoo, kev yuav khoom yuav tsum tau them sai sai rau pom.
3.ic nti procurement manufacturers xaiv xim
ic nti kev yuav khoom los pab cov lag luam kom nkag siab zoo txog cov tuam txhab sib txawv, tuaj yeem them sai sai rau qhov sib txawv ntawm lawv, yuav ua li cas xaiv yog qhov teeb meem, ua ntej raws li kev khiav hauj lwm peev ntawm cov chaw tsim khoom kom pom cov nplai ntawm cov khoom lag luam, tom qab ntawd mus rau cov neeg ua haujlwm kev lag luam. pom qhov zoo ntawm cov nti, ic nti kev yuav khoom, cov tuam txhab ua haujlwm tshwj xeeb tsom xam.
Cov yam ntxwv sib txawv ntawm ic nti kev yuav khoom yog tau raws li qhov yuav tsum tau muaj ntawm cov ic chips sib txawv, qhov xwm txheej tshwj xeeb raug tshuaj xyuas, kev xaiv muaj ntau haiv neeg, kev ntseeg siab yog loj, thiab qhov kev txiav txim siab tsis tuaj yeem ua rau arbitrarily, cuam tshuam rau kev siv cov ic chips. .
Integrated Circuit Court nti yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob, ua tau raws li cov khoom siv hluav taws xob hloov tshiab lossis cov nti tsis zoo, cov khoom lag luam tsis ua haujlwm thiab lwm yam teeb meem yuav tshwm sim.Yog li, dab tsi yog qhov qub, tshiab, kho dua tshiab?
1. Thawj cov khoom xa tuaj yog hais txog thawj lub Hoobkas tsim, muab faib ua cov khoom qub thiab cov khoom siv hauv tsev.
2. Lo lus "cov khoom tshiab ntau" yog siv nyob rau hauv nam ntawm IC chips, thiab lub ntsiab lus yog raws li nram no:
a.Cov khoom no tsis yog tsim los ntawm thawj lub Hoobkas, nws tuaj yeem tsim los ntawm lwm cov tuam txhab, tab sis nrog cov khoom qub, uas yog, cov khoom lag luam cuav.
b.Cov khoom yog tsim los ntawm thawj lub Hoobkas, vim tias nws yog qee yam khoom tsis tsim nyog uas ua rau cov khoom tsis ua raws li tus qauv, tab sis qhov ua haujlwm tseem zoo, lub sijhawm no lub Hoobkas qub yuav txo tus nqi thiab pov tseg los ntawm lwm txoj kev. .
c.Cov khoom qub, siv, polished, tinned, thiab tom qab ntawd muab tso rau kev muag khoom, tseem hu ua SAN tshiab.
3, refurbished khoom yog hais txog cov khoom los ntawm thawj lub Hoobkas tom qab ntau lawm, tom qab siv, muaj qee yam hnav, tom qab ua tiav, kom nws zoo li rov qab los ze rau lub Hoobkas qub tsuas yog tsim lub xeev.
Triode yog cov khoom siv feem ntau hauv cov hluav taws xob hluav taws xob, tab sis nws yuav ua tsis tau thaum siv.Cov kev txawj thiab cov tswv yim los daws qhov txhaum triode yog raws li hauv qab no:
1. Koj tuaj yeem siv multimeter los kuaj xyuas seb qhov polarity, tam sim no amplification, to tam sim no thiab lwm yam tsis zoo ntawm lub transistor yog qhov qub.Yog tias pom muaj qhov tsis txaus ntseeg, koj tuaj yeem xav hloov lub triode.
2. Koj tuaj yeem siv lub oscilloscope los soj ntsuam kev ua haujlwm ntawm lub transistor, xyuas seb lub teeb liab puas zoo li qub, seb puas muaj kev cuam tshuam thiab lwm yam teeb meem.Yog tias pom qhov teeb meem, koj tuaj yeem txiav txim siab hloov lub triode lossis kho qhov ntsuas qhov ntsuas hluav taws xob.
3. Tsis tas li ntawd, koj tuaj yeem siv rab phom cua sov lossis lub rooj vuam rau cua sov los xyuas seb puas muaj qhov cuam tshuam thermal hauv lub transistor.Yog tias koj pom qhov teeb meem, koj tuaj yeem xav txog kev hloov lub transistor lossis kho nws.
Yuav kom daws tau qhov txhaum ntawm triode, nws yog ib qho tsim nyog yuav tau xav txog ntau yam ua tiav, thiab siv cov txheej txheem tsim nyog rau kev kuaj xyuas thiab kho.
Cov neeg tuaj yeem nkag mus rau qee qhov kev pab cuam tsim rau hauv MCU ntaus ntawv.Lub khoos phis tawj nkaus xwb tuaj yeem tau txais cov cai tswjfwm los ntawm lub cim xeeb thaum lub sijhawm ua haujlwm, thiab tom qab ntawd ua cov haujlwm tsim nyog, thiaj li ua tau raws li cov haujlwm ua haujlwm raws li cov cai.Ntev npaum li MCU fais fab tuag, qhov kev zov me nyuam hauv MCU yuav raug kaw.
Hauv lub neej ntse, MCU tau dhau los ua cov txheej txheem tswj hwm ntawm qee cov khoom siv ntse.Hauv tib neeg lub neej thiab cov cuab yeej tsim khoom, tej zaum yuav muaj microcontrollers nyob txhua qhov chaw, xws li qee lub sijhawm, cov khoom siv tswj tsis siv neeg thiab lwm yam.SCM muaj kev tswj tsis siv neeg ua haujlwm thiab tau siv dav.Txhua yam khoom siv tshuab siv hauv tib neeg lub neej yuav muaj kev sib xyaw SCM.Piv txwv li, cov xov tooj ntawm tes peb siv thiab qee cov menyuam yaus cov khoom ua si yuav nruab nrog 1 txog 2 microcontrollers.
Nyob rau hauv daim ntawv thov, lub ntsiab daim ntawv thov ntawm ib tug nti microcomputer yog ib co automation khoom, uas yuav ua tau raws li ib tug chip microcomputer technology los hloov cov tsoos mechanical thiab hluav taws xob cov cuab yeej, thiaj li hais tias ib co tsoos mechanical thiab hluav taws xob cov cuab yeej mus cuag tsis siv neeg tswj. .Piv txwv li, kev siv cov khoos phis tawj ib leeg tuaj yeem tswj cov kiv cua thiab cua txias, uas tuaj yeem txhawb nqa lawv kom ua lub luag haujlwm muaj zog, kom tib neeg tuaj yeem tswj tau qee yam khoom siv tshuab thiab hluav taws xob tau yooj yim.
Cov kev ua haujlwm tsis zoo ntawm TDK capacitors yog cov cim tseem ceeb rau kev ntsuas lawv qhov zoo thiab kev siv ib txwm, thiab los ntawm cov kev txwv no, lawv tuaj yeem pab tib neeg xaiv thiab siv cov khoom siv hluav taws xob lossis hluav taws xob kom raug.
Cov kev ua haujlwm tseem ceeb ntawm TDK capacitor feem ntau suav nrog cov hauv qab no:
1. Rated kev khiav hauj lwm voltage: yog hais txog qhov siab tshaj plaws voltage ntawm kev ua hauj lwm tas mus li nyob rau hauv qhov kev siv ib puag ncig.Qhov ntsuas no txiav txim siab qhov siab tshaj plaws voltage lub capacitor tuaj yeem tiv taus hauv Circuit Court, tshaj qhov voltage no yuav ua rau muaj kev puas tsuaj rau lub capacitor.
2. Nominal capacitance thiab tso cai sib txawv: Lub cim muaj peev xwm yog lub peev xwm nominal ntawm lub capacitor, tab sis muaj qhov yuam kev ntawm lub peev xwm capacitance, yog li nws yuav tsum nkag siab txog kev sib raug zoo ntawm qhov sib txawv thiab lub peev xwm capacitance.Qhov kev ntsuas no tseem ceeb heev los xyuas kom meej qhov kev ua haujlwm ntawm lub capacitor hauv Circuit Court.
3. Dielectric lub zog: lub peev xwm ntawm lub capacitor tuaj yeem tiv taus lub zog hluav taws xob tsis raug puas tsuaj.Qhov no yog ib qho tseem ceeb parameter los soj ntsuam seb cov capacitors tuaj yeem ua haujlwm ruaj khov hauv qhov chaw muaj hluav taws xob siab.
4. Poob: Lub zog siv los ntawm lub capacitor vim cua sov yog hu ua qhov poob ntawm cov nti capacitor.Qhov ntsuas no qhia txog lub zog poob ntawm lub capacitor hauv cov txheej txheem ua haujlwm, uas yog qhov tseem ceeb rau kev ntsuas kev ua haujlwm thiab kev pabcuam lub neej ntawm lub capacitor.
5. Rwb thaiv tsev kev ua tau zoo: feem ntau suav nrog rwb thaiv tsev, lub sij hawm tas li thiab tam sim no to.Lub rwb thaiv tsev tsis kam qhia txog qhov tsis kam ntawm cov khoom siv rwb thaiv tsev hauv lub capacitor, thiab yog ib qho tseem ceeb Performance index los ntsuas qhov to ntawm lub capacitor.Lub sij hawm tas li thiab cov dej xau tam sim no kuj yog qhov tseem ceeb rau kev ntsuas qhov kev ua haujlwm ntawm rwb thaiv tsev ntawm cov capacitors.
6. Temperature coefficient: Kev sib raug zoo ntawm qhov kub thiab txias hloov pauv.Qhov kev ntsuas no qhia txog kev ua haujlwm ruaj khov ntawm cov capacitors nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias, uas yog qhov tseem ceeb los xyuas kom meej tias kev ua haujlwm txhim khu kev qha ntawm capacitors nyob rau hauv ib puag ncig nyuaj.
Cov saum toj no yog qhov kev ntsuam xyuas kev ua haujlwm ntawm TDK capacitor.Nws raug nquahu kom koj ua tib zoo sab laj nrog cov khoom siv thiab cov ntawv qhia tshwj xeeb thaum yuav cov khoom siv hluav taws xob kom nkag siab txog tus nqi tshwj xeeb thiab cov peev txheej ntawm kev siv ntau yam kev ua tau zoo los xyuas kom meej tias cov capacitors tuaj yeem ua tau raws li kev siv tiag tiag.
Thaum xaiv ib lub capacitor on-board rau lub tsheb tsim nyog, cov ntsiab lus tseem ceeb hauv qab no yuav tsum tau xav txog:
1. Muaj Peev Xwm: Xaiv lub peev xwm tsim nyog raws li qhov xav tau ntawm lub tsheb hluav taws xob hluav taws xob los xyuas kom meej tias lub capacitor tuaj yeem muab lub zog txaus txaus kom tau raws li cov kev xav tau ntawm lub voj voog.
2. Voltage: Lub ntsuas hluav taws xob ntawm lub capacitor yuav tsum sib npaug ntawm qhov hluav taws xob ntawm lub tsheb hluav taws xob kom paub meej tias lub capacitor tuaj yeem ua haujlwm ib txwm nyob hauv qhov ntau ntawm qhov system voltage.
3. Qhov kub thiab txias: Vim tias qhov chaw khiav hauj lwm hauv lub tsheb yuav nyuaj dua, nws yog ib qho tsim nyog los xyuas kom meej tias lub capacitor xaiv tuaj yeem ua haujlwm ib txwm nyob hauv qhov kub thiab txias.
4. Kev ntseeg tau: Xaiv cov capacitors uas dhau qhov kev ntsuam xyuas kev ntseeg tau thiab ua tau raws li cov qauv kev lag luam hauv tsheb los xyuas kom muaj kev ruaj ntseg ntawm nws txoj haujlwm thiab zoo.
5.ESR (sib npaug series tsis kam): ESR muaj qhov cuam tshuam tseem ceeb ntawm kev ua haujlwm ruaj khov thiab lub zog ntawm lub tsheb hluav taws xob, thiab lub capacitor nrog qis ESR yuav tsum raug xaiv.
6. Scale thiab ntaus hom: Xav txog seb qhov ntsuas thiab cov cuab yeej hom ntawm lub capacitor puas ua tau raws li cov qauv tsim ntawm lub tsheb hluav taws xob, suav nrog qhov loj thiab qhov hnyav ntawm nws qhov chaw nyob thiab seb puas yuav tsum tau kho cov cuab yeej tshwj xeeb.
7. Tus nqi: Raws li qhov kev xav tau ntawm kev ua haujlwm txaus siab, tus nqi thiab kev ua haujlwm ntawm cov capacitors raug txiav txim siab kom ua tiav kev lag luam thiab tsim nyog xaiv.
Hauv cov ntsiab lus, cov ntsiab lus saum toj no tau txiav txim siab hauv kev xaiv cov tsheb-theem capacitors rau cov tsheb tsim nyog.Nws raug nquahu kom xa mus rau tus neeg muag khoom cov khoom tshwj xeeb thiab cov ntaub ntawv kev paub thaum xaiv, lossis tham nrog cov kws tshaj lij rau kev ntsuam xyuas thiab xa mus.
1. Txhawm rau txiav txim siab qhov zoo thiab qhov tsis zoo ntawm lub ntsej muag, qhov zoo kawg nkaus ntawm cov hlau pob hluav taws xob voltage regulator diode raj lub cev yog tiaj tus, thiab qhov tsis zoo sab nraud yog semicircular.Yas sealed diode diode lub cev, ntawm ib kawg ntawm qhov tsis zoo electrode, lwm qhov kawg ntawm qhov zoo electrode luam tawm nrog cov cim xim.Lub cim ntawm lub regulator diode tsis meej, koj kuj siv tau ib tug multimeter kom paub qhov txawv ntawm nws polarity, lub zoo tib yam diode ntsuas txoj kev yog tib yam, uas yog, multimeter R * 1k cov ntaub ntawv, ob tug cwj mem txuas nrog ob lub electrodes ntawm. lub regulator diode, ntsuas qhov tshwm sim, thiab tom qab ntawd kho ob tus cwj mem ntsuas.Hauv ob qhov kev ntsuas ntsuas, thaum tus nqi tiv thaiv tsawg heev, tus cwj mem dub yog txuas nrog qhov zoo electrode ntawm lub regulator diode, thiab tus cwj mem liab saib yog txuas nrog qhov tsis zoo electrode ntawm lub regulator diode.Qhov zoo thiab qhov tsis zoo ntawm cov regulator diode yog me me los yog infinite, qhia tias lub regulator diode yog faulty los yog puas.
2. Tus nqi hluav taws xob ntawm 0 ~ 30 v yog ntsuas los ntawm kev hloov kho DC lub zog txuas ntxiv, cov nram qab no 13 v regulator diode, cov zis hluav taws xob ntawm cov tswj fais fab tuaj yeem hloov kho mus rau 15 v, thiab lub zog ntawm cov kab hluav taws xob ua haujlwm yog Tsuas yog 1.5 kΩ tam sim no txwv tsis pub ntsuas yog ntsuas tom qab Zener diode txuas nrog lub cathode, thiab lub zog-Zener diode yog qhov zoo, thiab dua qhov Zener diode voltage yog ntsuas nrog multimeter, thiab ntsuas kev nyeem ntawv yog Zener diode voltage tus nqi. .Thaum tus nqi hluav taws xob tswj hluav taws xob diode ntau dua 15V, qhov hluav taws xob tswj hluav taws xob tau hloov kho ntau dua 20V.Megohm meters hauv qab 1000V kuj tseem tuaj yeem siv los muab kev ntsuas hluav taws xob rau kev tswj diodes.Cov txheej txheem yog: megohm meter Zener diode ntawm qhov tsis zoo electrode, qhov tsis zoo lub davhlau ya nyob twg megohm meter thiab lub sijhawm zoo ntawm Zener diode, thiab megohm meter raug kho raws li cov cai, tib lub sijhawm, multimeter saib xyuas qhov voltage. ntawm ob qhov kawg ntawm Zener diode (lub multimeter voltage profile yuav tsum nyob ntawm qhov ruaj khov voltage tus nqi), cov kev taw qhia ntawm multimeter voltage yog ruaj khov, thiab Zener diode voltage tus nqi yog qhov ruaj khov voltage tus nqi.Yog tias qhov ntsuas qhov ntsuas hluav taws xob ruaj khov ntawm qhov ntsuas hluav taws xob diode yog ntsuas, nws qhia tau tias lub diode tsis ruaj khov.
Thaum txiav txim siab EMI tswj, tus tsim engineers thiab PCB pawg thawj coj tsim qauv engineers yuav tsum xub xav txog qhov kev xaiv ntawm IC nti.Cov yam ntxwv ntawm kev sib xyaw ua ke xws li pob hom, kev tsis ncaj ncees voltage thiab nti tshuab (xws li CMOS, ECI) muaj kev cuam tshuam zoo rau kev cuam tshuam electromagnetic.
1. Integrated circuit electromagnetic cuam tshuam qhov chaw
Cov peev txheej ntawm PCB ntawm EMI kev sib txuas ua ke feem ntau suav nrog: EMI teeb liab voltage thiab teeb liab tam sim no tshwm sim los ntawm cov xwm txheej yoj lub teeb liab zaus ntawm qhov tso zis kawg, tsim hluav taws xob thiab sib nqus teb los ntawm lub capacitor thiab inductance ntawm lub nti nws tus kheej hauv digital integrated circuit conversion ntawm logic siab mus rau qis los yog los ntawm logic qis mus rau logic siab.
Lub square yoj ua los ntawm IC nti muaj cov sinusoidal thiab harmonic Cheebtsam nrog ntau zaus, uas tsim cov electromagnetic cuam tshuam zaus cov khoom cuam tshuam los ntawm engineers thiab cov kws tshaj lij.Qhov siab tshaj plaws EMI zaus, tseem hu ua EMI transmitting bandwidth, yog lub luag haujlwm ntawm lub sijhawm teeb tsa (tsis yog lub teeb liab zaus).
Txhua tus nqi hluav taws xob hauv Circuit Court sib raug rau qee qhov tam sim no, thiab txhua qhov tam sim no sib raug rau qhov voltage.Thaum cov zis ntawm IC hloov pauv los ntawm qhov siab siab mus rau qhov qis qis lossis los ntawm qhov qis qis mus rau qhov siab tshaj plaws, cov teeb liab voltages thiab cov teeb liab tam sim no tsim hluav taws xob thiab sib nqus teb, thiab qhov siab tshaj plaws ntawm cov hluav taws xob thiab cov hlau nplaum no yog qhov sib kis bandwidth.Lub zog hluav taws xob thiab sib nqus lub zog thiab qhov kev faib ua feem ntawm cov hluav taws xob sab nraud, tsis yog tsuas yog kev ua haujlwm ntawm lub sijhawm teeb tsa, tab sis kuj nyob ntawm qhov zoo ntawm lub capacitor thiab inductance tswj ntawm lub teeb liab channel los ntawm qhov chaw mus rau qhov chaw thauj khoom, yog li PCB Lub teeb liab qhov chaw nyob rau hauv, thiab lub load yog nyob rau hauv lwm yam kev sib txuas circuits, lub integrated circuit ntawm lub Circuit Court board tej zaum yuav los yog tsis nyob rau hauv lub PCB.Yuav kom tswj tau zoo electromagnetic cuam tshuam, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib tsis yog rau nws cov capacitance thiab inductance, tab sis kuj rau capacitance thiab inductance tam sim no ntawm PCB.Zoo li PCB tsim, IC pob tsim kuj tuaj yeem cuam tshuam loj rau EMI.
Cov pob khoom sib xyaw ua ke feem ntau suav nrog silicon-raws li nti, ib qho me me hauv PCB, thiab cov ntaub qhwv ntsej muag.Lub silicon wafer yog mounted rau ntawm ib tug me me PCB 64 silicon wafer los ntawm kev khi cov kev sib txuas ntawm cov kab thiab lub ncoo, nws tseem tuaj yeem txuas ncaj qha rau hauv qee lub pob me me PCB paub txog lub teeb liab thiab lub zog ntawm silicon wafer thiab kev sib txuas ntawm cov khoom sib xws. pins ntawm pob, kom paub txog lub teeb liab thiab lub zog ntawm lub silicon wafer sab nraud.
Capacitor leakage (tsis tshua muaj rwb thaiv tsev impedance) yog hom tsis ua haujlwm ntau tshaj plaws, thiab nws cov laj thawj tseem ceeb tuaj yeem muab faib ua cov khoom siv sab hauv hauv cov txheej txheem tsim khoom thiab lwm yam hauv cov txheej txheem tsim khoom.Qhov ua rau ntawm nti capacitor leakage tau muab faib ua ob hom, ib qho yog qhov teeb meem sab hauv, thiab lwm qhov yog qhov teeb meem sab nraud
Ua ntej, qhov tseem ceeb ntawm sab hauv
1. Tsis muaj
Ib kab noj hniav tsim los ntawm evaporation ntawm txawv teb chaws teeb meem nyob rau hauv lub capacitor thaum sintering.Voids tuaj yeem ua rau luv luv ntawm cov electrodes thiab cov hluav taws xob tsis zoo.Cov voids loj dua tsis tsuas yog txo IR, tab sis kuj txo cov peev txheej zoo.Thaum siv lub tshuab hluav taws xob, nws tuaj yeem ua rau cov cua sov hauv zos hauv cov kab noj hniav vim qhov xau, txo cov rwb thaiv tsev ntawm cov ceramic nruab nrab, exacerbate to, ua rau tawg, tawg, combustion thiab lwm yam tshwm sim.
2. Sintering Crack
Lub sintering tawg feem ntau yog vim qhov txias ceev hauv cov txheej txheem sintering thiab tshwm nyob rau hauv txoj kab ntsug ntawm ntug electrode.
3. Delamination
Stratification feem ntau yog tsim tom qab stacking, vim tsis zoo lamination los yog roj hmab tawm, tsis txaus sintering, sib xyaw huab cua ntawm cov khaubncaws sab nraud povtseg, sab nraud impurities thiab jagged kab rov tav cracking.Nws kuj tseem ua tau tias thermal expansion ntawm cov khoom sib txawv tom qab sib tov tsis sib xws.
Thib ob, lwm yam
1. Thermal shock
Thermal shock feem ntau tshwm sim nyob rau hauv yoj soldering, qhov kub thiab txias hloov ceev, ua rau cov kab nrib pleb ntawm cov electrodes nyob rau hauv lub capacitor, feem ntau yuav tsum tau pom los ntawm kev ntsuas, kev soj ntsuam tom qab sib tsoo, feem ntau me me tawg, yuav tsum tau siv ib tug magnifying iav kom paub meej tias, ob peb kis yuav pom cov kab nrib pleb.
Nyob rau hauv cov ntaub ntawv no, nws raug pom zoo kom siv reflow welding, los yog qeeb qhov kub hloov thaum lub sij hawm yoj soldering (tsis ntau tshaj 4 ~ 5 ° C / s), thiab tswj qhov kub ntawm 60 ° C ua ntej ntxuav lub vaj huam sib luag.
2. Sab nraud mechanical stress
Vim hais tias lub ntsiab ntawm MLCC yog ceramic, nyob rau hauv qhov chaw ntawm cov khoom, sub-plates, screws thiab lwm yam txheej txheem, nws yog zoo li hais tias cov neeg kho tshuab kev nyuaj siab loj heev ua rau lub capacitor yuav tsum tau nyem thiab tawg, ua rau muaj peev xwm tsis ua hauj lwm.Lub sijhawm no, qhov tawg feem ntau yog oblique, tawg los ntawm kev sib tshuam ntawm lub davhlau ya nyob twg thiab lub cev ceramic.
3. Solder migration
Vuam nyob rau hauv ib tug high humidity ib puag ncig tej zaum yuav ua rau solder tsiv teb tsaws ntawm ob qho kawg ntawm lub capacitor, thiab thaum sib txuas ua ke, xau thiab luv Circuit Court tej zaum yuav tshwm sim.
1. Muaj ntau lub npe tso cai
Tsuav koj paub txog mos tube xws li cov khoom siv hluav taws xob, koj yuav paub tias muaj ntau lub npe nrov tuaj txawv teb chaws, thiab thaum nkag siab txog mos tube manufacturers, ntawm chav kawm, koj yuav tsum xub them sai sai rau seb cov tuam txhab kev koom tes txawv teb chaws. txaus.Mingary Technology tau muaj ntau lub npe ntshuam ntawm cov ntawv tso cai tsim nyog ntau xyoo dhau los, yog li cov chaw tsim khoom tau nce kaum xyoo ntawm kev tsim khoom.
2, tuaj yeem muab cov kev daws teeb meem tsim nyog
Qee lub sij hawm cov neeg siv khoom ntsib teeb meem lawv tus kheej, vim tias lawv tsis muaj kev paub txaus, nws tsis paub meej tias yuav daws nws li cas kom zoo dua, tab sis cov kws tshaj lij mos tube tuam ntxhab sib txawv, thiab lawv yuav muaj tseeb ntau qhov kev daws teeb meem tuaj yeem tso cai rau cov neeg siv khoom mus yuav cov khoom zoo.Ntev npaum li qhov kev thov nce, cov chaw tsim khoom tuaj yeem muab cov kev daws teeb meem sai sai.
3. Tsis txhob txhawj txog qhov tsis txaus
Tsuav koj tuaj yeem koom tes nrog cov kws tshaj lij tus neeg sawv cev ua lag luam, txawm tias muaj pes tsawg cov khoom koj yuav tsum tau yuav, lossis cov qauv khoom tsawg, koj tuaj yeem cia cov tuam txhab daws teeb meem los ntawm kev nplua nuj thiab ua tiav cov qauv thiab lwm yam zoo.Raws li cov khoom lag luam txaus, tsuav yog cov Tshuag tau lees paub, cov khoom tuaj yeem xa tuaj sai sai.
Saib ntawm no, peb yuav tsum paub tias cov tuam txhab mos tube twg yog cov kws tshaj lij thiab muaj kev ntseeg siab, qhov tseeb, ntev npaum li lub zog ntawm cov tuam txhab tsim khoom, tuaj yeem tuav kev sib raug zoo nrog lawv mus ntev.Vim tias qhov kev pabcuam zoo kuj zoo heev, yog li yog tias koj pom qhov teeb meem ntawm cov khoom, koj tuaj yeem tiv tauj cov neeg ua haujlwm hauv lub sijhawm los daws nws.
Nrog rau txoj kev loj hlob sai ntawm cov khoom, muaj ntau yam qauv ntawm triode, thiab cov qauv tsis tseem ceeb ntawm txhua tus qauv ntawm triode yog txawv, thiab yuav ua li cas ceev faj yuav tsum tau them sai sai rau hauv kev yuav khoom ntawm triode, thiab yuav ua li cas kom paub qhov tseem ceeb ntawm triode. .Cia peb tham txog hnub no.
Xaiv lub triode yuav tsum paub qhov yooj yim tsis tau ntawm lub triode, thiab yuav tsum paub tus yam ntxwv zaus, suab nrov thiab tso zis zog ntawm lub triode.
1. Yam ntxwv zaus fT.Nrog rau qhov nce ntawm lub zog tso zis, lub peev xwm ua haujlwm loj dua ntawm triode yuav raug txo, thiab qhov zaus fT sib haum rau β = 1 yog hu ua tus yam ntxwv zaus fT ntawm triode.Hauv kev tsim thiab tsim cov khoom siv hluav taws xob, lub triode nyob rau hauv lub siab zaus, qhov nruab nrab zaus, lub oscillator thiab lwm cov kab yuav tsum tau xaiv nrog me me electrode capacitance, thiab nws cov yam ntxwv zaus Fr yuav tsum yog 3 mus rau 10 npaug ntawm cov zis hluav taws xob.Yog tias lub microphone wireless tau tsim, tus yam ntxwv zaus ntawm triode 9018 yuav tsum tau noj ntau dua 600NHz.
2. Kev xaiv lub suab nrov thiab lub zog tso zis.Thaum ua cov amplifiers tsawg zaus, lub ntsiab tsis xws li suab nrov thiab lub zog tso zis ntawm triode raug muab coj los rau hauv tus account.Nws raug nquahu kom xaiv ib lub raj nrog me me nkag mus rau tam sim no Iceo, vim tias qhov me me ntawm Iceo, qhov zoo dua qhov kev cia siab ntawm qhov ntsuas kub ntawm amplifier.Hauv qhov hluav taws xob qis qis, yog tias cov khoom siv hluav taws xob me me ntxiv rau lub laub rub lub raj raug xaiv, qhov poob tawm lub zog yuav tsum tsawg dua lossis sib npaug li 1W, qhov loj electrode tam sim no yuav tsum tsawg dua lossis sib npaug li 1.5A, thiab qhov siab tshaj plaws. kev khiav hauj lwm voltage nyob rau hauv qhov opposite kev taw qhia yog 50 ~ 300V.
