Switching Power Supply

Ua ntej peb nkag mus rau hauv lub ncauj lus, cia peb saib luv luv hauv qhov hloov pauv cov nkauj muam nraug nus ntawm linear fais fab mov. Ib hom hloov hluav taws xob hloov hluav taws xob (SMPS) nyob rau hauv cov ntsiab lus ntawm LED teeb pom kev zoo yog hais txog tus tsav tsheb LED uas tswj cov zis rau LEDs los ntawm kev hloov pauv ceev. SMPS LED tsav tsheb ua raws li kev txhawb nqa, phaw, buck-boost lossis flyback circuit topologies txhawm rau nce lossis nqis qis rau cov khoom siv hluav taws xob. Ib lossis ntau lub hwj chim transistor hloov ntawm lub xeev nyob rau hauv thiab tawm ntawm ib qho kev khiav hauj lwm zaus los hloov cov khoom siv hluav taws xob tuaj rau hauv lub tshuab hluav taws xob. Cov pulses ntawm tam sim no yog smoothed siv lub zog cia tivthaiv uas muaj capacitors los yog inductors. Muaj qhov hloov pauv tsawg kawg nkaus hauv cov keyboards niaj hnub xws li hlau oxide siv cov khoom siv hluav taws xob thiab cov nyhuv ET transistor regulator ua haujlwm nrog kev ua haujlwm siab. Txawm li cas los xij, kev hloov pauv ntau zaus tuaj yeem tsim suab nrov thiab tsim hluav taws xob cuam tshuam (EMI). Kev siv cov khoom siv reactive ts nrog rau qhov xav tau rau kev sib txuas ntxiv los txhawm rau txhawm rau hloov lub suab nrov ua rau kev hloov cov regulators ib qho kim, loj, tsis muaj kev ntseeg siab thiab kev daws teeb meem nyuaj rau LED kev tswj hwm.