Charger kuaj
Sep 28, 2019| Shenzhen Shenchuang Hi-tech Electronics Co., Ltd. Peb cov khoom tseem ceeb muaj xws li cov chargers mus ncig, tsheb chargers, USB cables, fais fab nyiaj hauv tuam txhab nyiaj thiab lwm yam khoom siv digital.Tag nrho cov khoom muaj kev nyab xeeb thiab txhim khu kev qha, nrog cov cim styles.products dhau daim ntawv pov thawj zoo li CE, FCC, ROHS, UL, PSE, C-Tick, thiab lwm yam. , Yog tias koj txaus siab rau, koj tuaj yeem tiv tauj ceo@schitec.com ncaj qha.
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Charger kuaj
1. Tshawb xyuas seb puas muaj qhov txawv txav uas pom tseeb los ntawm kev soj ntsuam cov tsos ntawm lub transformer. Yog hais tias lub coil txhuas puas lawm, de-soldering, seb cov khoom siv insulating puas muaj qhov kub hnyiab, txawm tias cov hlau tseem ceeb fastening ntsia hlau yog xoob, seb cov ntawv silicon steel puas yog xeb, txawm tias lub winding coil raug los yog lwm yam.
2. Kev ntsuas rwb thaiv tsev. Siv lub multimeter R × 10k thaiv los ntsuas qhov kev tiv thaiv ntawm cov tub ntxhais thiab cov thawj, thawj thiab thib ob, cov tub ntxhais thiab txhua theem nrab, cov txheej txheem electrostatic shielding thiab cov kab nruab nrab thiab theem nrab windings. Multimeter pointer yuav tsum xa mus rau qhov infinity. Qhov chaw tsis txav. Txwv tsis pub, qhov kev ua haujlwm ntawm lub tshuab hluav taws xob rwb thaiv tsev tsis zoo.
3. Kev kuaj xyuas lub kauj ntawm thiab tawm. Muab cov multimeter tso rau hauv R × 1 block. Thaum lub sij hawm kuaj, yog tias tus nqi tsis kam ntawm lub winding yog infinite, lub winding muaj ib tug faulty txhaum.
4. Kev ntxub ntxaug ntawm cov coils thawj thiab theem nrab. Thawj thiab thib ob pins ntawm lub hwj chim transformer feem ntau yog coj tawm ntawm ob sab, thiab thawj winding yog cim nrog 220V, thiab lub thib ob winding yog sau nrog rated voltage, xws li 15V, 24V, 35V. Tom qab ntawd txheeb xyuas lawv raws li cov cim no.
5. Kev kuaj xyuas tsis muaj kev thauj khoom tam sim no.
(1) Kev ntsuas ncaj qha. Qhib tag nrho cov kev sib tw thib ob thiab tso cov multimeter hauv AC tam sim no thaiv (500mA, hlua rau hauv thawj winding. Thaum lub ntsaws ntawm thawj winding yog muab tso rau hauv 220V AC mains, lub multimeter qhia tias tsis muaj load tam sim no tus nqi. Tsis yog Nws yog ntau tshaj 10% ~ 20% ntawm tag nrho cov load tam sim no ntawm transformer. lub transformer muaj short-circuit txhaum.
(2) Indirect ntsuas txoj kev. Ib qho 10? / 5W resistor txuas nrog hauv cov koob nrog thawj winding ntawm lub transformer, thiab qhov thib ob tseem yog tag nrho. Tig lub multimeter mus rau AC voltage thaiv. Tom qab fais fab tuag, qhov hluav taws xob poob U hla qhov resistor R yog ntsuas nrog ob qhov kev xeem ua, thiab tom qab ntawd qhov tsis muaj kev thauj khoom tam sim no kuv tau suav los ntawm Ohm txoj cai, uas yog, kuv null=U / R.
6, nrhiav kom paub tsis muaj-load voltage. Txuas lub hauv paus ntawm lub hwj chim transformer mus rau 220V mains, thiab siv lub multimeter AC voltage los ntsuas qhov tsis muaj-load voltage tus nqi (U21, U22, U23, U24) ntawm txhua winding thiaj li ua tau raws li qhov yuav tsum tau muaj. Qhov kev tso cai yuam kev yog feem ntau: high voltage winding Tsawg dua los yog sib npaug rau ± 10%, tsis tshua muaj hluav taws xob winding Tsawg dua los yog sib npaug rau ± 5%, qhov sib txawv ntawm qhov sib txawv ntawm ob pawg ntawm symmetrical windings nrog nruab nrab kais yuav tsum tsawg dua lossis sib npaug. ± 2%.
7. Feem ntau, lub tshuab hluav taws xob qis hluav taws xob tso cai rau qhov kub thiab txias yog 40 degree ~ 50 degree. Yog tias qhov zoo ntawm cov khoom siv insulating siv tau zoo, qhov kub thiab txias tuaj yeem nce ntxiv.
8. Tshawb xyuas thiab txheeb xyuas tib lub npe kawg ntawm txhua qhov winding. Thaum siv lub tshuab hluav taws xob hloov hluav taws xob, qee zaum ob lossis ntau qhov kev hloov pauv thib ob tuaj yeem siv tau hauv cov koob txhawm rau kom tau txais qhov xav tau theem nrab voltage. Thaum lub hwj chim transformer yog siv nyob rau hauv series, tib lub npe ntawm txhua winding koom nyob rau hauv lub series yuav tsum tau muab kev cob cog rua kom raug, thiab tsis muaj yuam kev. Txwv tsis pub, lub transformer yuav tsis ua haujlwm zoo. I. Kev tshawb pom dav dav thiab kev ntxub ntxaug ntawm kev ua txhaum luv luv ntawm lub hwj chim transformers. Cov tsos mob tseem ceeb tom qab kev ua txhaum luv luv hauv lub zog hloov hluav taws xob yog qhov tsim hluav taws xob hnyav thiab qhov txawv txav ntawm qhov nruab nrab winding tso zis voltage. Feem ntau, qhov luv luv-circuit ntsiab lus ntawm lem nyob rau hauv lub kauj, lub luv luv-circuit tam sim no ntau dua, thiab qhov loj dua lub transformer heats. Ib txoj hauv kev yooj yim los txheeb xyuas yog tias lub zog hloov hluav taws xob muaj qhov cuam tshuam luv luv yog ntsuas qhov tsis muaj kev thauj khoom tam sim no (kuaj ua ntej hauv txoj kev sim). Ib qho kev hloov pauv uas muaj qhov cuam tshuam luv luv yuav muaj qhov tsis muaj nqi tam sim no uas ntau dua 10% ntawm cov khoom siv tam sim no. Thaum lub luv luv Circuit Court yog hnyav, lub transformer yuav kub sai li sai tau nyob rau hauv ob peb kaum vib nas this tom qab tsis muaj-load hwj chim-on, thiab cov tub ntxhais hlau yuav hnov kub thaum kov los ntawm tes. Lub sijhawm no, nws tsis tas yuav ntsuas qhov tsis muaj kev thauj khoom tam sim no los txiav txim siab tias lub transformer muaj qhov luv-circuit point.