Lub 12 Volt fais fab mov yuav tso cai rau koj kom muaj zog yuav luag txhua yam khoom siv hauv tsev, suav nrog txawm tias lub laptop. Thov nco ntsoov tias mus txog 19 volts yog siv rau lub laptop input. Tab sis nws yuav ua haujlwm zoo yog tias koj siv nws los ntawm 12. Muaj tseeb, qhov siab tshaj plaws tam sim no yog 10 amperes. Tsuas yog kev noj mus txog qhov tsis tshua muaj nqi, qhov nruab nrab yog khaws cia ntawm qib 2-4 Amperes. Qhov tsuas yog qhov yuav tsum tau xav txog yog tias thaum hloov cov qauv siv hluav taws xob nrog lub tsev tsim, koj yuav tsis tuaj yeem siv lub roj teeb built-in. Txawm li cas los xij, 12-volt fais fab mov yog qhov zoo tagnrho rau cov khoom siv zoo li no.
Kev teeb tsa hluav taws xob
Qhov tseem ceeb tshaj plaws ntawm cov khoom siv hluav taws xob yog qhov tso zis voltage thiab tam sim no. Lawv qhov tseem ceeb nyob ntawm ib yam - ntawm cov hlau siv nyob rau hauv qhov thib ob winding ntawm transformer. Yuav ua li cas xaiv nws yuav tau tham hauv qab no. Rau koj tus kheej, koj yuav tsum txiav txim siab ua ntej rau lub hom phiaj twg koj npaj yuav siv 12-volt fais fab mov. Yog tias tsim nyog rau cov khoom siv hluav taws xob qis - navigators, LEDs, thiab lwm yam, ces2-3 amps yog txaus ntawm cov zis. Thiab qhov ntawd yuav ntau heev.
Tab sis yog tias koj npaj yuav siv nws los ua cov haujlwm hnyav dua - piv txwv li, kom them lub tsheb roj teeb, ces koj yuav xav tau 6-8 Amperes ntawm qhov tso zis. Kev them nyiaj tam sim no yuav tsum yog kaum npaug tsawg dua li lub peev xwm ntawm lub roj teeb - qhov kev xav tau no yuav tsum raug coj mus rau hauv tus account. Yog tias nws tsim nyog los txuas cov khoom siv uas nws cov khoom siv hluav taws xob sib txawv ntawm 12 Volts, ces nws yog qhov tsim nyog los teeb tsa qhov kev hloov kho.
Yuav ua li cas xaiv lub transformer
thawj lub ntsiab yog qhov hloov pauv hluav taws xob. Lub transformer pab txhawb rau kev hloov pauv ntawm qhov hloov pauv ntawm 220 volts rau tib yam hauv amplitude, tsuas yog nrog tus nqi tsawg dua. Yam tsawg kawg koj xav tau tus nqi me dua. Rau cov khoom siv hluav taws xob muaj zog, koj tuaj yeem nqa lub tshuab hloov pauv ntawm TS-270 hom ua lub hauv paus. Nws muaj lub zog siab, muaj txawm tias 4 windings uas muab tawm 6.3 volts txhua. Lawv tau siv los ua lub zog ci ntsa iab ntawm xov tooj cua raj. Tsis muaj teeb meem ntau, koj tuaj yeem ua 12 Volt 12 Amp fais fab mov tawm ntawm nws, uas tuaj yeem them lub tsheb roj teeb.
Tab sis yog tias koj tsis txaus siab rau nws cov windings, ces koj tuaj yeem tshem tawm tag nrho cov thib ob, tawm hauv lub network nkaus xwb. Thiab cua cov hlau. Qhov teeb meem yog yuav ua li cas xam tus lej yuav tsum tau ua. Txhawm rau ua qhov no, koj tuaj yeem siv cov txheej txheem kev suav yooj yim - suav pes tsawg lub voj voog thib ob muaj, uas ua rau 6.3 Volts. Tam sim no cia li faib 6, 3 los ntawm tus lej lem. Thiab koj yuav tau txais cov nqi hluav taws xob uas tuaj yeem raug tshem tawm ntawm ib qhocoil xov. Nws tseem tsuas yog suav pes tsawg zaus koj xav tau cua kom tau txais 12.5-13 Volts ntawm cov zis. Nws yuav zoo dua yog tias cov zis yog 1-2 Volts siab dua li qhov xav tau.
Kev tsim khoom ntawm lub rectifier
Lub rectifier yog dab tsi thiab nws yog dab tsi? Qhov no yog ib tug semiconductor diode ntaus ntawv uas yog ib tug converter. Nws converts alternating tam sim no mus rau direct tam sim no. Txhawm rau txheeb xyuas qhov kev ua haujlwm ntawm cov theem rectifier, nws yog qhov pom ntau dua los siv oscilloscope. Yog hais tias koj pom ib tug sinusoid nyob rau hauv pem hauv ntej ntawm lub diodes, ces tom qab lawv yuav muaj ib tug yuav luag ncaj kab. Tab sis me me los ntawm cov sinusoid tseem yuav nyob twj ywm. Tshem lawv tom qab.
Kev xaiv ntawm diodes yuav tsum tau ua nrog qhov hnyav tshaj plaws. Yog tias 12 volt fais fab mov siv los ua lub roj teeb charger, ces koj yuav tsum tau siv cov hlwb nrog qhov rov qab tam sim no txog li 10 amperes. Yog tias koj npaj siab yuav ua kom cov neeg siv khoom siv hluav taws xob qis tam sim no, ces lub rooj sib txoos txuas txuas yuav txaus txaus. Nov yog qhov koj yuav tsum nres. Preference yuav tsum tau muab rau ib tug rectifier Circuit Court assembled raws li ib tug choj - los ntawm plaub diodes. Yog tias siv rau ntawm ib qho khoom siv hluav taws xob (ib lub voj voog ib leeg), ces qhov ua tau zoo ntawm cov khoom siv hluav taws xob yuav luag halved.
lim thaiv
Tam sim no tias muaj qhov hluav taws xob tas li ntawm qhov tso zis, nws yog qhov tsim nyog uas 12 volt fais fab mov Circuit Court tau txhim kho me ntsis. Rau lub hom phiaj no nws yog ib qho tsim nyog yuav tau siv cov ntxaij lim dej. Rau kev noj hausCov khoom siv hauv tsev, nws txaus los siv LC saw. Nws yog tsim nyog tham txog nws nyob rau hauv ntau yam. Ib qho inductance - lub choke txuas nrog rau qhov zoo tso zis ntawm theem rectifier. Tam sim no yuav tsum dhau los ntawm nws, qhov no yog thawj theem ntawm kev lim dej. Tom ntej no los ntawm qhov thib ob - lub tshuab hluav taws xob electrolytic nrog lub peev xwm loj (ntau txhiab microfarads).
Tom qab cov inductor, lub tshuab hluav taws xob electrolytic txuas nrog ntxiv. Nws qhov tso zis thib ob yog txuas nrog ib qho xaim (muab). Lub ntsiab lus ntawm kev ua haujlwm ntawm electrolytic capacitor yog tias nws tso cai rau koj tshem tawm tag nrho cov khoom sib txawv ntawm cov tam sim no. Nco ntsoov, muaj cov me me ntawm lub sinusoid ntawm cov zis ntawm lub rectifier? Ntawm no, nws yog qhov tseeb ntawm nws uas koj yuav tsum tau tshem tawm, txwv tsis pub 12 Volt 12 Amp fais fab mov yuav cuam tshuam nrog lub cuab yeej txuas nrog nws. Piv txwv li, lub xov tooj cua lossis xov tooj cua yuav tsim lub suab nrov.
tso zis voltage stabilization
txhawm rau txhawm rau qhov tso zis hluav taws xob, koj tuaj yeem siv ib qho khoom siv hluav taws xob xwb. Qhov no tuaj yeem yog zener diode nrog lub zog ua haujlwm ntawm 12 volts, lossis ntau dua thiab niaj hnub sib dhos xws li LM317, LM7812. Cov tom kawg yog tsim los kom ruaj khov voltage ntawm 12 volts. Yog li ntawd, txawm nyob rau hauv cov xwm txheej uas muaj 15 volts ntawm cov zis ntawm lub rectifier theem, tsuas yog 12 yuav nyob twj ywm tom qab stabilization, tag nrho lwm yam mus rau hauv tshav kub. Qhov no txhais tau tias nws yog ib qho tseem ceeb heev rau nruab lub stabilizer ntawm lub radiator.
Voltage adjustment 0-12V
Rau ntau dua ntawm cov khoom siv, nws tsim nyogsiv lub tswv yim yooj yim uas tuaj yeem tsim tau hauv ob peb feeb. Qhov no tuaj yeem ua tiav siv lub rooj sib tham yav dhau los LM317. Tsuas yog qhov sib txawv ntawm qhov hloov pauv hauv hom stabilization yuav me me. Ib tug 5 kΩ kuj sib txawv resistor muaj nyob rau hauv cov hlau tawg uas mus rau rho tawm. Ib qho kev tawm tsam ntawm li 220 ohms yog suav nrog ntawm qhov tso zis ntawm lub rooj sib txoos thiab qhov sib txawv ntawm cov resistor. Thiab nruab nrab ntawm cov tswv yim thiab cov zis ntawm stabilizer, kev tiv thaiv rov qab voltage yog ib qho semiconductor diode. Yog li, 12-volt fais fab mov, sib sau ua ke nrog koj tus kheej txhais tes, hloov mus rau hauv ntau yam khoom siv. Tam sim no nws tseem tsuas yog sib sau ua ke thiab ntsuas qhov ntsuas. Lossis koj tuaj yeem muab tso rau hauv hluav taws xob voltmeter ntawm qhov tso zis, uas koj tuaj yeem pom tus nqi tam sim no.
