Lub switching fais fab mov nws tus kheej puas lawm
Muaj ntau qhov laj thawj rau kev puas tsuaj ntawm cov khoom siv hluav taws xob hloov pauv, nws yuav yog qhov tsis ua haujlwm ntawm qhov ntsuas hluav taws xob, lub luag haujlwm ntawm lub hwj chim tswj nti yuav ntws, lossis electrolytic capacitor yuav poob, thiab lwm yam, tab sis qhov no tsuas yog kev xav, thiab qhov laj thawj tiag tiag ntawm qhov tsis ua haujlwm yuav tsum raug kuaj ua ntej nws tuaj yeem paub. .
