Dab tsi yog linear fais fab mov
Cov khoom siv hluav taws xob tawm ua ntej hloov pauv AC lub zog los ntawm lub tshuab hloov pauv, thiab tom qab ntawd kho thiab lim nws los ntawm lub voj voog rectifier kom tau txais qhov tsis muaj zog DC. Yuav kom ua tiav qhov siab-precision DC voltage, cov zis hluav taws xob yuav tsum tau hloov kho los ntawm kev tawm tswv yim voltage. Los ntawm qhov kev ua tau zoo ntawm qhov pom, lub tshuab hluav taws xob siv hluav taws xob no yog qhov paub tab heev, tuaj yeem ua tiav kev ruaj ntseg, lub ripple kuj yog me me, thiab tsis muaj kev cuam tshuam thiab suab nrov uas hloov hluav taws xob muaj. Lub voltage tawm tswv yim Circuit Court ua haujlwm nyob rau hauv ib tug linear xeev, thiab muaj ib tug tej yam voltage poob rau ntawm kev hloov raj. Thaum outputting ib tug loj khiav hauj lwm tam sim no, lub hwj chim noj ntawm kev hloov lub raj yog loj heev, thiab cov conversion efficiency yog tsawg.
Linear fais fab mov txhais tau hais tias cov raj siv rau kev hloov kho voltage ua haujlwm hauv cheeb tsam linear. Ua ke, kuj tseem muaj qhov hloov pauv hluav taws xob, uas txhais tau hais tias lub raj siv rau kev hloov pauv hluav taws xob ua haujlwm hauv cheeb tsam saturation thiab txiav tawm, uas yog, lub xeev hloov.
Cov khoom siv hluav taws xob linear feem ntau kuaj cov zis voltage thiab tom qab ntawd xa mus rau qhov sib piv voltage amplifier nrog rau qhov siv voltage. Cov zis ntawm lub tshuab hluav taws xob hluav taws xob yog siv los ua cov tswv yim ntawm qhov hloov hluav taws xob hloov lub raj los tswj lub raj hloov kom lub qhov hluav taws xob hloov pauv nrog cov tswv yim, yog li kho nws cov zis. Qhov hluav taws xob. Txawm li cas los xij, cov khoom siv hluav taws xob hloov pauv hloov cov zis hluav taws xob los ntawm kev hloov lub sijhawm rau thiab tawm ntawm lub raj regulator, uas yog, lub voj voog ua haujlwm.
Cov raj siv rau kev hloov hluav taws xob hauv cov khoom siv hluav taws xob linear ua haujlwm hauv cheeb tsam linear. Ua ke, kuj tseem muaj qhov hloov pauv hluav taws xob, uas txhais tau hais tias lub raj siv rau kev hloov pauv hluav taws xob ua haujlwm hauv cheeb tsam saturation thiab txiav tawm, uas yog, lub xeev hloov.
Cov khoom siv hluav taws xob linear feem ntau kuaj cov zis voltage thiab tom qab ntawd xa mus rau qhov sib piv voltage amplifier nrog rau qhov siv voltage. Cov zis ntawm lub tshuab hluav taws xob hluav taws xob yog siv los ua cov tswv yim ntawm qhov hloov hluav taws xob hloov lub raj los tswj lub raj hloov kom lub qhov hluav taws xob hloov pauv nrog cov tswv yim, yog li kho nws cov zis. Qhov hluav taws xob. Txawm li cas los xij, cov khoom siv hluav taws xob hloov pauv hloov cov zis hluav taws xob los ntawm kev hloov lub sijhawm rau thiab tawm ntawm lub raj regulator, uas yog, lub voj voog ua haujlwm.
2. Lub hauv paus ntsiab lus ntawm linear fais fab mov: linear fais fab mov feem ntau suav nrog fais fab zaus transformer, tso zis rectifier lim, tswj Circuit Court, tiv thaiv Circuit Court thiab lwm yam. Cov khoom siv hluav taws xob tawm ua ntej hloov pauv AC lub zog los ntawm lub tshuab hloov pauv, thiab tom qab ntawd kho thiab lim nws los ntawm lub voj voog rectifier kom tau txais qhov tsis ruaj khov DC voltage. Yuav kom ua tiav qhov siab-precision DC voltage, cov zis hluav taws xob yuav tsum tau hloov kho los ntawm kev tawm tswv yim voltage. Cov cuab yeej siv hluav taws xob no yog qhov paub tab thiab muaj peev xwm ua tau siab heev High stability, me ripple, thiab tsis muaj kev cuam tshuam thiab suab nrov ntawm kev hloov hluav taws xob. Txawm li cas los xij, nws qhov tsis zoo yog tias nws yuav tsum muaj qhov hloov pauv loj thiab hnyav, thiab qhov ntim thiab qhov hnyav ntawm qhov yuav tsum tau lim capacitor kuj tseem loj heev, thiab cov lus tawm tswv yim hluav taws xob ua haujlwm nyob rau hauv lub xeev linear, thiab muaj qee qhov voltage poob ntawm lub hloov raj, thiab cov zis kuj loj. Lub sijhawm no, kev siv hluav taws xob ntawm kev hloov kho lub raj loj dhau lawm, kev hloov pauv kev ua haujlwm tsawg, thiab lub dab dej kub loj yuav tsum tau nruab. Hom fais fab mov no tsis haum rau cov kev xav tau ntawm cov khoos phis tawj thiab lwm yam khoom siv, thiab yuav maj mam hloov los ntawm kev hloov hluav taws xob.
3. Kev sib piv ntawm cov khoom siv hluav taws xob hloov hluav taws xob: hloov lub zog hluav taws xob feem ntau suav nrog cov kab hluav taws xob input lim, input rectification filter, inverter, tso zis rectification lim, tswj Circuit Court, thiab tiv thaiv Circuit Court. Lawv lub luag haujlwm yog:
1. Cov kab hluav taws xob nkag: tshem tawm kev cuam tshuam los ntawm kab sib chaws, xws li pib lub cev muaj zog, hloov cov khoom siv hluav taws xob, hluav taws xob tawm tsam, thiab lwm yam, thiab tseem tiv thaiv lub suab nrov nrov uas tsim los ntawm kev hloov hluav taws xob los ntawm kev sib kis mus rau qhov chaw. daim phiaj.
2. Input rectification filter: rectify thiab lim cov input voltage ntawm daim phiaj los muab DC voltage rau lub converter.
3. Inverter: Nws yog ib feem tseem ceeb ntawm kev hloov fais fab mov. Nws hloov lub DC voltage mus rau hauv high-frequency AC voltage thiab plays lub luag hauj lwm nyob rau hauv cais cov zis ib feem ntawm lub input daim phiaj.
4. Output rectification filter: rectify thiab lim lub high-frequency AC voltage tso zis los ntawm lub converter kom tau qhov yuav tsum tau DC voltage, thiab nyob rau tib lub sij hawm tiv thaiv high-frequency suab los ntawm kev cuam tshuam cov load.
5. Tswj Circuit Court: txheeb xyuas qhov tso zis DC voltage, piv nrog rau qhov siv hluav taws xob, thiab ua kom nrov. Cov mem tes dav ntawm oscillator yog hloov kho los tswj lub converter kom cov zis voltage ruaj khov.
6. Kev tiv thaiv Circuit Court: Thaum lub zog hloov hluav taws xob muaj qhov overvoltage lossis overcurrent luv luv Circuit Court, kev tiv thaiv Circuit Court nres lub switching fais fab mov los tiv thaiv lub load thiab lub hwj chim mov nws tus kheej.
Lub switching fais fab mov ua ntej rectifies lub alternating tam sim no rau hauv ncaj qha tam sim no, ces inverts cov ncaj tam sim no mus rau hauv alternating tam sim no, thiab ces rectifies thiab outputs qhov yuav tsum tau tam sim no voltage. Nyob rau hauv no txoj kev, lub switching fais fab mov txuag lub transformer nyob rau hauv qis linear fais fab mov thiab lub voltage tawm tswv yim Circuit Court. Lub inverter Circuit Court nyob rau hauv lub switching fais fab mov yog tag nrho cov kev hloov kho, uas muaj peev xwm kuj ua tau zoo heev hloov raug.
