Qee qhov kev ceev faj rau kev saib xyuas siv MOS hlab hauv kev ua haujlwm

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Soláthraí Stáisiún Cumhachta Inaistrithe

Kev nce qib ntawm tib neeg lub neej yog sib cais los ntawm txhua qhov chaw ntawm lub neej, thiab kev hloov tshiab ntawm ntau yam khoom siv hluav taws xob yuav tsis qhib peb tus tsim lub dag zog. Qhov tseeb, ntau tus neeg yuav tsis nkag siab txog cov khoom siv hluav taws xob, xws li MOS. Tube.

MOS raj muaj kev koom tes hauv cov khoom siv hluav taws xob los ntawm cov neeg nqa khoom feem ntau, tseem hu ua ib tus ncej transistors. Nws belongs rau voltage tswj semiconductor li. Muaj kev tawm tswv yim siab (10 ^ 7 ~ 10 ^ 12Ω), tsis tshua muaj suab nrov, tsis tshua muaj zog noj, loj dynamic ntau yam, kev sib koom ua ke yooj yim, tsis muaj qhov tshwm sim thib ob, kev nyab xeeb ua haujlwm dav dav, thiab lwm yam.

, yog tam sim no ib tug bipolar transistor thiab Fais fab transistor tus haib competitor. MOS tubular diode (tseem hu ua parasitic diode) pom nyob rau hauv ib qho khoom siv MOS tubular, tab sis tsis muaj nyob rau hauv kev sib xyaw ua ke. Lub diode tuaj yeem siv rau hauv kev tiv thaiv rov qab thiab txuas ntxiv ntawm cov tsav tam sim no thiab inductive load.

Feem ntau, lub siab poob qis yog li 0.7-1V. Txij li thaum lub diode tam sim no, MOS ntaus ntawv tsis tuaj yeem nkag siab yooj yim ntawm kev siv qhov hloov hauv Circuit Court.

Piv txwv li, nyob rau hauv lub charger Circuit Court, kev them nyiaj yog ua tiav. Tom qab disconnecting lub hwj chim, lub roj teeb yuav rov qab. Kev ceev faj rau kev siv MOS (1) Txhawm rau kom siv cov raj MOS kom muaj kev nyab xeeb, tus nqi txwv ntawm nws lub zog dissipation, qhov siab tshaj plaws ntws-qhov hluav taws xob, qhov siab tshaj plaws qhov hluav taws xob qhov hluav taws xob, thiab qhov siab tshaj plaws tam sim no tsis pub tshaj hauv kev tsim hluav taws xob.

(2) Thaum siv ntau hom MOS transistors, lawv yuav tsum tau txuas nrog lub Circuit Court kom nruj raws li qhov yuav tsum tau muaj kev tsis ncaj ncees, thiab yuav tsum tau ua tib zoo saib xyuas qhov kev tsis ncaj ncees ntawm MOS transistors. Piv txwv li, muaj PN kev sib tshuam ntawm qhov chaw thiab qhov ntws ntawm MOS raj, thiab lub rooj vag ntawm N-channel raj tsis tuaj yeem nias. Lub rooj vag ntawm p-channel raj tsis tuaj yeem ua rau tsis zoo, thiab qhov kev thawb zoo li no.

(3) Txij li cov input impedance ntawm MOSMOS transistor yog siab heev, tus pin yuav tsum luv luv thaum lub sij hawm thauj mus los thiab cia, thiab hlau ntaub thaiv npog ntim yuav tsum tau siv los tiv thaiv sab nraud induction muaj peev xwm tawg rooj vag. Nws yog ib qho tseem ceeb kom nco ntsoov tias MOSMOS raj tsis tuaj yeem muab tso rau hauv lub thawv yas. Nws yog qhov zoo tshaj rau khaws cia rau hauv lub thawv hlau.

Nyob rau tib lub sijhawm, xyuam xim rau cov dej tsis kam ntawm cov yeeb nkab. (4) Txhawm rau tiv thaiv kev sib tsoo ntawm MOS yeeb nkab rooj vag, tag nrho cov cuab yeej ntsuas, workbench, soldering hlau, thiab Circuit Court nws tus kheej yuav tsum tau zoo hauv av; Thaum vuam, thov welded ua ntej. Ua ntej qhov kev sib txuas hauv Circuit Court, qhov kawg ntawm lub raj yuav tsum luv luv rau ib leeg, thiab cov khoom siv luv luv raug tshem tawm tom qab vuam; thaum lub raj raug tshem tawm ntawm lub rooj sib txoos, xyuas kom meej tias tib neeg lub cev yog grounded nyob rau hauv ib qho kev tsim nyog, piv txwv li siv lub nplhaib hauv av.

Tau kawg koj siv tau. Advanced roj cua sov hluav taws xob hlau yog yooj yim dua rau vuam MOS raj kom muaj kev nyab xeeb; thaum lub hwj chim tsis raug kaw, lub teeb tau muab tso rau hauv lub voj voog lossis los ntawm lub voj voog. Koj yuav tsum tau xyuam xim rau cov kev ntsuas kev ruaj ntseg saum toj no thaum siv MOS.

(5) Thaum txhim kho MOS raj, ua tib zoo saib rau qhov chaw teeb tsa kom tsis txhob ze rau lub tshav kub tsim hluav taws xob; txhawm rau tiv thaiv lub raj vibration, nws yog ib qho tsim nyog los kho lub teeb vaj tsev. Thaum cov hlau lead yog nkhaus, nws txoj kab uas hla yuav tsum loj dua cov hauv paus loj ntawm 5 mm los tiv thaiv rab koob kom khoov thiab ua rau huab cua to. (6) Thaum siv VMOS, yuav tsum tau ntxiv lub dab dej kom haum.

Siv VNF306 ua piv txwv, tom qab kev txhim kho 140 × 140 × 4 (mm) radiator, lub zog siab tshaj plaws tuaj yeem ncav cuag 30W. (7) Tom qab txuas ntau lub raj hauv qhov sib npaug, txij li lub peev xwm ntawm cov khoom siv hluav taws xob thiab cov khoom xa tawm, cov yam ntxwv siab zaus ntawm lub amplifier degraded, thiab cov kab mob parasitic oscillation ntawm lub amplifier yog ib qho yooj yim tshwm sim. Ua los ntawm kev tawm tswv yim.

Yog li ntawd, nws yog feem ntau tsis ntau tshaj 4 lub raj sib xyaw ua ke, thiab cov kab mob parasitic oscillation resistor txuas rau hauv qab lossis rooj vag ntawm txhua lub raj. (8) Lub rooj vag qhov hluav taws xob ntawm MOS raj tsis tuaj yeem thim rov qab, uas tuaj yeem khaws cia hauv lub xeev qhib. Thaum lub rooj vag insulated MOS raj tsis siv, vim nws cov kev tawm tswv yim siab, txhua lub electrode yuav tsum tau luv luv los tiv thaiv cov hluav taws xob sab nraud.

Kev puas tsuaj rau cov nyhuv ntawm cov yeeb nkab. (9) Thaum vuam, sab nrauv ntawm cov hlau nplaum yuav tsum tau nruab nrog cov xaim hauv av sab nraud kom tiv thaiv kev puas tsuaj rau lub raj vim hluav taws xob hlau. Hais txog qhov me me ntawm vuam, koj tuaj yeem ua kom sov cov hlau soldering ua ntej vuam thiab rub tawm lub ntsaws los yog tua lub hwj chim.

Tshwj xeeb, thaum welding lub rooj vag insulated MOS raj, vuam yuav tsum tau ua raws li qhov kev txiav txim ntawm lub qhov rooj vag, thiab vuam yuav tsum raug txiav tawm. (10) Thaum muag nrog 25W soldering hlau, nws yuav tsum ceev ceev. Yog tias koj siv 45 ~ 75W soldering hlau, siv cov tweezers txhawm rau txhawm rau cov hauv paus hniav ntawm tus pin los pab cov cua sov.

MOS raj tuaj yeem siv los kuaj xyuas qhov zoo ntawm lub raj los ntawm cov ntaub ntawv &39;meter&39; (xyuas qhov zoo thiab rov qab ua haujlwm ntawm txhua qhov kev sib tshuam PN thiab qhov kev tawm tsam ntawm lub qhov dej), thiab lub qhov rooj thaiv qhov rooj tsis tuaj yeem kuaj xyuas kev siv cov multimeter, yuav tsum siv Tester. Ntxiv mus, txoj kev luv luv rau txhua lub electrode tsuas yog raug tshem tawm tom qab txuas tus tester. Thaum disassembling, koj yuav tsum luv nws, ces tshem nws.

Qhov tseem ceeb yog tiv thaiv lub qhov rooj los ntawm ntab. Hauv cov ntsiab lus, xyuas kom MOS tswj kev nyab xeeb siv, nws yog ib qho tsim nyog yuav tsum tau xyuam xim rau ntau yam kev ntsuas kev nyab xeeb kom ua tau ntau yam, feem ntau ntawm cov kws tshaj lij, tshwj xeeb tshaj yog cov neeg nyiam siv hluav taws xob feem ntau yuav tsum pib raws li lawv tus kheej qhov teeb meem tiag tiag, siv txoj hauv kev, kev nyab xeeb thiab siv tau zoo ntawm MOS raj. .