Cov txheej txheem:
- Khoom siv
- Kauj Ruam 1: Npaj Cov Txuas Txuas
- Kauj Ruam 2: Mount Transistor
- Kauj Ruam 3: Txuas ob txhais ceg
- Kauj Ruam 4: Xeem thiab Siv
Video: Ceev thiab qias neeg SMD SOT Transistor Converters: 4 Cov Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25
Qee lub sij hawm koj yuav tsum tau txuas cov xov hlau rau sab saum toj mount transistor. Qee qhov laj thawj uas koj yuav xav ua qhov no yog:
- koj muaj qhov rov lees paub transistor koj xav siv uas tshwm sim los ua qhov chaw saum npoo av
- koj xav sim ib yam dab tsi tawm ntawm lub khob cij uas tsis muaj kab
- koj yuav tsum tau hloov lub transistor uas tsis siv sijhawm thiab tsuas yog hloov pauv yog hauv SMD daim ntawv
- koj xav txuas cov xov hlau ntev rau nws
Kuv sim siv txiav cov khoom seem ntawm PCB rau qhov no yav dhau los, tab sis nws txawv txav los ua. Tom qab ntawd nws tshwm sim rau kuv tias kuv muaj qee cov seem PCI daim npav zaum hauv kuv lub thawv tsis zoo thiab cov txuas txuas yuav luag qhov sib txawv kom haum rau SOT23 pob ntawm.
Cov kab txuas sib txuas muaj qhov zoo ntawm kev ua kub plated, yog li yooj yim txaus rau solder, thiab muaj zog heev.
Khoom siv
- SOT transistor koj xav muab xov hlau txuas rau
- Daim npav PCI qub
- Txiab (piv txwv li tin snips lossis snips aviation)
- Soldering hlau
- Txiav tawm cov khoom tiv thaiv lossis lwm cov xaim nyias
Kauj Ruam 1: Npaj Cov Txuas Txuas
Koj xav tau qee qhov txiab rau qhov no uas tuaj yeem txiav PCB. Kuv tau sim tin snips thiab snips aviation, ob qho tib si ua haujlwm tau zoo. Txawm hais tias tin snips muab txiav zoo dua Kuv tsis nyiam lub tswv yim ntawm pawg thawj coj saib xyuas ua rau lawv li cas! Koj tuaj yeem siv tau hacksaw.
Txiav tawm ntug txuas. Noj me ntsis ntsuab nrog nws, uas koj tuaj yeem txiav tawm tom qab yog tias xav tau. Qhov laj thawj rau qhov no yog kev txwv kev puas tsuaj, txij li cov snips cuam tshuam lub rooj tsavxwm, kab txaij ntsuab muab kev tiv thaiv me ntsis. Nws kuj tseem muab qee qhov txiaj ntsig rau koj thaum ua yuam kev.
Xaiv ib ntu nrog 3 tus neeg sib koom ua ke thiab txiav nws.
Ua ib qho kev tu koj xav tias tsim nyog.
Yog tias koj xav muab cov pob me dua li SOT23 (Kuv tau ua SC70, daim duab) koj tuaj yeem sim txuas nws rau tsuas yog 2 lub pawm, los ntawm kev txiav tawm ib qho me me los ntawm nruab nrab ntawm ib ntawm lawv.
Kauj Ruam 2: Mount Transistor
Txiav txim siab qhov kev txiav txim koj xav kom cov ceg transistor tshwm rau hauv. Nrog rau ib txhais ceg nyob rau sab saum toj, koj tau txais tus pin hauv qhov kev txiav txim 1, 3, 2, yog tias nws nyob hauv qab koj tau 2, 3, 1. Qhov no yuav yog qhov tseem ceeb rau koj, lossis nws yuav tsis yog.
Tin qhov chaw uas ib ceg yuav tsum mus
Muab lub transistor tso rau ib ceg hla ntawm qhov chaw uas koj tau ntim
Koj yuav tsum tau ceev faj vim tias lub transistor xav kom plam tawm ntawm cov laug, thiab tseem tus pin yuav tsum tau muab tso rau ntawm ntug sab hauv ntawm qhov txuas.
Xijpeem, rov ua kom sov qhov chaw koj tinned yog li ib qho transistor ceg tau muab muag rau nws.
Txheeb xyuas kom zoo zoo vim tias lub transistor tsuas yog haum rau lub txuas, sab nraud 2 ceg yuav nyob ntawm lawv cov npoo. Koj yuav tsum tau tig nws me ntsis, lossis rov ua kom sov thiab kho
Solder ob txhais ceg ntxiv, tom qab ntawd yog tias tsim nyog, siv cov laug txuas tshiab rau thawj tus uas koj tau ua.
Kauj Ruam 3: Txuas ob txhais ceg
Nov yog qhov uas qee qhov ntawm cov khoom coj ua uas koj tau txuag tau los ua ke, rau kev ua cov khoom coj!
Yog tias koj tsis cawm lawv, koj muaj teeb meem dab tsi? Lawv tuag tau txiaj ntsig. Xijpeem, koj tuaj yeem siv cov hlau tseem ceeb hlau xaim xwb.
Koj xav tau 10 txog 15mm rau txhua ceg. Nws yooj yim dua yog tias koj kaw daim kab xev transistor ua ntej soldering. Kuv siv daim kab xev "Koptan", uas yog pheej yig dua li kab xev Kapton.
Tua qhov kawg ntawm cov xov hlau, thiab tin cov neeg sib cuag nrog lub blob zoo ntawm cov laug. Ua nrawm ua qhov no vim tias cov pob qij txha sib txuas tau yaj yooj yim heev.
Muab cov hlau tso rau ntawm ib sab, nruab nrab ib qho yog ncaj, thiab ob sab sab nraud tawm ntawm kwv yees li 20 degrees
Khoov ob lub xov hlau sab nraud kom koj xaus nrog kwv yees li 0.1 sib nrug nruab nrab ntawm lawv thiab nruab nrab ib.
Txiav ob txhais ceg kom lawv txhua tus zoo ib yam nkaus.
Rau pob me dua ntawm 2 lub rooj tsav tsheb, txiav lub ncoo ntev kom cov xov hlau los ntawm 2 daim ntawv ib nrab tuaj yeem hla qhov kawg ntawm nws.
Kauj Ruam 4: Xeem thiab Siv
Ntsuas lub transistor siv koj txoj kev nyiam. Kuv tau siv "Hiland" yam ntsuas ntsuas ntsuas, uas yog cov khoom siv ci ntsa iab.
Qhov tshwj xeeb transistor no tau raug rhuav tshem los ntawm qee yam. Kuv xub xaiv nws vim tias nws tau cim PD, uas raws li cov ntaub ntawv kuv xub tau ua rau nws yog BSS84, uas yog P hom mosfet. Kev sim ua pov thawj nws yog PNP txawm li cas los xij, thiab kev tshawb nrhiav ntxiv qhia tias nws yog 2SA1171.
Kuv xav siv qhov tshwj xeeb transistor ntawm lub khob cij uas tsis muaj kab, yog li koj tuaj yeem pom daim duab demo nyob ntawd.
Pom zoo:
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