Ntau yam khoom siv hauv tsev, kev lag luamzaus transformers, txawm hais tias lawv tsim lawv tus kheej winding, los yog kho lub burnt tawm transformer, muaj kev koom tes nyob rau hauv ib feem ntawm ib tug yooj yim xam, cov phau ntawv nyob rau hauv cov mis, txawm hais tias nruj, tab sis cov tswv yim siv ntawm complexity, tsis yooj yim heev.Qhov tsab xov xwm no qhia txog cov tswv yim transformer xam ntawm cov qauv empirical.
1. Hlau core xaiv
Raws li lawv tus kheej lub zog xav tau los xaiv txoj cai tseem ceeb yog thawj kauj ruam hauv winding lub transformer. Yog hais tias cov tub ntxhais hlau (silicon steel sheet) xaiv loj heev, yuav ua rau muaj qhov loj ntawm lub transformer, tus nqi siab dua, tab sis cov tub ntxhais hlau me me dhau lawm, yuav ua rau poob ntawm lub transformer, thaum lub peev xwm. nqa lub nra yuav pluag.
Txhawm rau txiav txim siab qhov loj me ntawm cov tub ntxhais hlau, thawj qhov uas yuav tsum tau suav cov khoom siv hluav taws xob tiag tiag ntawm lub tshuab hloov pauv theem nrab, uas yog sib npaug ntawm qhov hloov pauv hloov hluav taws xob theem nrab winding voltage, qhov sib npaug ntawm cov khoom ntawm cov khoom tam sim no. Yog hais tias nws yog ib tug tag nrho-yoj rectifier transformer, nws yuav tsum tau xam raws li 1/2 ntawm lub transformer theem nrab voltage. Secondary winding zog noj mus koom lub transformer nws tus kheej poob lub zog, uas yog, lub transformer thawj pom tseeb zog.
General Secondary winding zog nyob rau hauv lub 10w hauv qab lub transformer, nws tus kheej poob ntawm theem nrab zog noj yuav ua tau mus txog 30 ~ 50% ntawm lub zog siv, nws efficiency tsuas yog 50 ~ 70%. Secondary winding zog nyob rau hauv lub 30 w hauv qab poob ntawm txog 20 ~ 30%, 50 w hauv qab poob ntawm txog 15 ~ 20%, 100 w hauv qab poob ntawm txog 10 ~ 15%, 100 w siab tshaj poob ntawm txog 10% hauv qab no, saum toj no poob parameter yog hais txog qhov zoo tib yam plug hom transformer. Yog hais tias qhov kev txiav txim ntawm R-hom transformer, c-hom transformer thiab toroidal transformer yog ua raws li, qhov poob parameter txo nyob rau hauv lem.
Raws li tag nrho cov thawj hwj chim ntawm lub transformer xam saum toj no cov tub ntxhais yuav raug xaiv. Hlau tub ntxhais cheeb tsam S = axb (cm2). Raws li pom hauv daim duab txuas. Transformer pom lub zog thiab kev sib raug zoo ntawm s nrog cov qauv hauv qab no: s = K √ P1
P1 rau lub transformer thawj tag nrho cov pom tseeb zog, chav tsev: VA (volt-ampere), s yuav tsum tau xaiv core cross-sectional cheeb tsam, K yog ib tug coefficient, nrog rau qhov luaj li cas ntawm lub transformer Pl txawv xaiv ntawm cov nqi sib txawv. Nyob rau tib lub sij hawm, coj mus rau hauv tus account lub silicon steel ntawv ntawm cov xim insulating, cov nyhuv ntawm qhov sib txawv, K thiab P1 kev sib raug zoo yog:
P1 K tus nqi
10VA 2 ~ 2.2 hli
50VA hauv qab 2 ~ 1.5
lOOVA qis dua 1.5 ~ 1.4
2. Kev suav cov lem ib volt
Tom qab xaiv cov tub ntxhais s. Tom qab ntawd txiav txim siab tus naj npawb ntawm lem ib volt, thiaj li yuav cua lub transformer muaj ib tug tsim nyog excitation tam sim no. Feem ntau siv empirical formula: N = (40 ~ 55) / S, N yog tus naj npawb ntawm lem ib volt.
Raws li qhov sib txawv zoo ntawm silicon steel daim ntawv xaiv coefficient 40 ~ 55. ntau dua siab siab silicon steel, nrog lub qhov muag saib xyuas cov nplais ntawm crystallization. Thiab tsis tshua muaj nkig, tsuas yog 1 mus rau 2 zaug uas tawg, tawg ntawm qhov tsis sib xws, cov coefficient raug coj los ua 40. Yog tias cov ntawv silicon steel nto huv si, khoov 4 mus rau 5 zaug tseem tsis yooj yim tawg, seem rau qhov zoo. txoj kab ncaj nraim, tus coefficient yog ntau tshaj 50.
Nrhiav kom paub cov lej ntawm ib lub volt sib npaug los ntawm 220V uas yog thawj qhov kev hloov pauv, muab faib los ntawm tus lej ntawm cov kev xav tau thib ob uas yog qhov thib ob winding lem. Vim hais tias cov hlau muaj qhov tsis kam, tam sim no ntws los ntawm qhov poob qis, qhov kev hloov pauv thib ob yuav tsum tau nce los ntawm 5 ~ lO% (raws li kev xaiv thauj khoom tam sim no, qhov tam sim no tuaj yeem nce los ntawm kev faib ua feem ntau).
3. Xaiv txoj kab uas hla
Raws li qhov loj ntawm winding load tam sim no, xaiv qhov sib txawv diameters ntawm enameled hlau. Cov qauv hauv qab no tuaj yeem siv los tshawb pom:
d = O.8√I.
Chav tsev: l - A. d (hlau txoj kab uas hla) - mm.
4. Txoj kev winding thiab ceev faj
Yog li, niaj hnub no, lub zog rwb thaiv tsev ntawm enameled hlau tau zoo heev. Raume me fais fab transformersnyob ib ncig ntawm 50W, peb feem ntau mus nrog cov nplaim hluav taws kub nyhiab cov pob txha thiab cov hlua khi. Tsuas yog nco ntsoov siv lub zog muaj zog enameled hlau, thiab thaum koj nyob nraum winding nws, khaws txhua yam txheej txheej los ntawm txheej - tsis muaj kab pheeb ces kaum loj tso cai! Qhov no yuav pab kom tsis txhob nce qhov sib txawv ntawm cov xov hlau. Rau transformers tshaj 50W, txij li thaum muaj tsawg lem ib volt, qhov voltage sib txawv ntawm cov xov hlau tau ntau dua. Nws yog qhov zoo tshaj rau muab cov ntawv insulating (xws li 0.05mm tuab daim ntawv cable lossis kraft ntawv) rau txhua txheej thaum koj cua nws.
Koj twv yuav raug hu xav tiv thaiv cov khaubncaws sab nraud povtseg ntawm kev swb mus rau hauv qis dua! Lub rwb thaiv tsev ntawm windings yuav tsum nyob ntawm seb qhov hluav taws xob ntau npaum li cas koj nyob nrog. Nyob nruab nrab ntawm theem pib, tsom rau yam tsawg kawg plaub txheej ntawm 0.1mm cable daim ntawv-hla siv daim kab xev rau tus kheej ntawm no! Yog tias koj lub tshuab hluav taws xob me me muaj ntau tshaj li ob pawg ntawm cov kab sib txuas sib txuas sib txuas ua ke, nco ntsoov ntxiv ob txheej ntawm cable ntawv rwb thaiv tsev ntawm txhua pawg ib yam nkaus. Thiab yog hais tias qhov no transformer mus rau hauv lub suab los yog audiovisual iav? Tsis txhob hnov qab suav nrog qee qhov electrostatic shielding padding hauv cov txheej txheem ntau txheej. Tom qab koj tau ua tag nrho cov khoom winding, ua tib zoo saib thaum ntxig cov ntaub ntawv silicon steel - lawv yuav tsum haum snugly kom koj tsis txhob hnov qab electromagnetic suab messing khoom.
Txawm hais tias nws yog ob chav E-puab lossis EI-zoo li cov nplooj ntawv, lawv yuav tsum tau nruj nreem ntim ua ke yam tsis muaj qhov khoob; hla lawv tuaj yeem pab tau! Thaum koj muab tso rau hauv ob peb daim kawg (kwv yees li plaub los yog tsib), ua los ntawm qhov chaw kom koj tsis txhob ua kom puas cov hlua txuas ntawm txoj kev. Tom qab ntawd cia peb qhuav nws tawm thiab poob rau hauv cov xim tom qab! Rau kev hloov pauv hauv qab 50W, koj tuaj yeem siv txoj kev ziab kom qhuav: luv-circuit tag nrho cov kab nruab nrab thib ob ua ntej thiab tom qab ntawd txuas lub teeb pom kev zoo (60 ~ 100W / 220V) hauv series nrog lub zog loj kom nws sov nws tus kheej.Qhov loj dua lub teeb, qhov siab dua qhov kub, tab sis nyob rau hauv lub xeev kaw, kom qhov kub thiab txias qis dua 80 degrees yog qhov zoo dua.
Post lub sij hawm: Sep-25-2024