Tsis muaj kev sib cais hloov hluav taws xob
Lub tshuab hluav taws xob hloov hluav taws xob tsis sib cais tsis muaj qhov sib cais ntawm lub cev ntawm lub tshuab hluav taws xob, thiab ib qho kawg ntawm cov khoom siv hluav taws xob thiab cov zis kawg tau txuas nrog ua ke.
Cov khoom siv hluav taws xob tsis raug rho tawm tsis muaj kev koom tes ntawm lub tshuab hluav taws xob high-frequency, thiab tswj cov hluav taws xob hluav taws xob ncaj qha los ntawm kev hloov siab ceev kom tau txais cov hluav taws xob qis hluav taws xob ncaj qha. Thaum lub sij hawm hloov dua siab tshiab, lub zog hloov hluav taws xob tswj nti muaj qhov hluav taws xob poob siab, yog li tsis muaj txoj hauv kev kom tau txais cov zis loj tam sim no.
Cov zis tam sim no ntawm cov qauv no feem ntau tsis tshaj 300mA. Nws feem ntau yog siv rau hauv cov ntawv thov uas qhov tso zis tam sim no me me, qhov xav tau ntim me me, thiab tus nqi yuav tsum tsawg.
Lub high-frequency ferrite transformer nyob rau hauv lub switching fais fab mov yog ib qho tseem ceeb ntaus ntawv rau high-frequency zog conversion.
Cov tub ntxhais hlau siv hauv kev hloov pauv hluav taws xob yog cov khoom siv ferrite, thaum lub sij hawm poob ntawm cov ntaub ntawv silicon zoo tib yam yog qhov loj heev kom ua tau raws li qhov chaw ua haujlwm nyob rau hauv cov xwm txheej siab.
Lub 220V AC lub zog yog kho los ntawm tus choj BD1, thiab tom qab ntawd dhau los ntawm π-kab lim uas muaj C1, L1, thiab C2, thiab DC voltage tom qab kho tau ruaj khov ntawm li 300V. Ob lub resistors R2 thiab R3 xa qhov pib tsis muaj zog tam sim no mus rau 3-pin INV los tsim kom muaj qhov zaus oscillation los tswj cov kev coj ntawm MOS raj.
Tsis tas li ntawd, thaum lub oscillation tau tsim, lwm qhov kev pabcuam winding ntawm thawj zaug muab lub zog tsav tam sim no los tswj MOS raj thiab txuas ntxiv ua haujlwm tsis tu ncua.
