Lub tswv yim ntawm DC fais fab mov yog lub mains voltage ntawm 220V. Raws li ib txwm muaj, tus nqi ntawm qhov yuav tsum tau muaj DC voltage yog qhov txawv ntawm qhov zoo ntawm daim phiaj voltage. Yog li ntawd, nws yog ib qho tsim nyog los txo qhov voltage los ntawm lub hwj chim transformer ua ntej ua cov AC voltage. Tus nqi rms ntawm lub transformer theem nrab voltage nyob ntawm qhov xav tau ntawm lub tom ntej Circuit Court. Hauv kev xyaum, transformers yuav tsis siv, tab sis lwm txoj kev yuav siv tau.
Qhov voltage ntawm ob sab ntawm lub transformer yog hloov mus rau hauv ib tug DC voltage los ntawm ib tug rectifier Circuit Court, uas yog, ib tug sine yoj voltage yog hloov dua siab tshiab rau hauv ib tug unidirectional pulsating voltage. Txij li thaum cov hluav taws xob rectified muaj ib qho loj AC tivthaiv, nws yuav cuam tshuam rau kev ua haujlwm ntawm cov khoom siv hluav taws xob thiab tsis tuaj yeem siv ncaj qha. Txhawm rau txo qhov ripple ntawm qhov hluav taws xob, nws yuav tsum tau lim los ntawm lub tshuab lim dej (capacitor) kom du cov zis voltage. Qhov zoo tshaj plaws, tag nrho cov khoom siv AC yuav tsum tau lim tawm kom cov zis hluav taws xob ntawm lub lim dej tsuas yog DC voltage xwb. Txawm li cas los xij, txij li lub lim dej yog ib qho passive Circuit Court, cov nyhuv lim yuav raug cuam tshuam tom qab txuas nrog lub load. Rau cov hluav taws xob hluav taws xob uas tsis tas yuav muaj kev ruaj ntseg siab, kev kho thiab lim DC voltage tuaj yeem siv los ua lub zog hluav taws xob.
Although the AC voltage becomes a DC voltage with a small AC component after rectification and filtering, when the grid voltage fluctuates or the load changes, its average value will also change. The function of the voltage regulator circuit is to make the output DC voltage basically free from the influence of grid voltage fluctuations and load changes, so as to obtain sufficiently high stability 1
DC Power supply 30V 10A White color Link:
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