Linear Regulated Power Supplies, Switching Power Supplies and Phase Controlled Power Supplies in Detail
DC fais fab mov raws li kev hloov pauv txawv, tuaj yeem muab faib ua peb pawg ntawm cov kab hluav taws xob tswj hluav taws xob, hloov hluav taws xob thiab theem tswj fais fab.
1, linear tswj fais fab mov kom ua tau raws li cov kev xav tau ntawm cov hluav taws xob hluav taws xob ntawm DC voltage thiab lub zog zoo (precision, ripple, thiab lwm yam), tab sis muaj ob qhov teeb meem loj: Ua ntej, kev hloov lub raj VT ua haujlwm nyob rau hauv lub xeev linear amplification, poob. loj heev, lub zog mov efficiency yog tsawg heev; Qhov thib ob yog qhov yuav tsum tau siv lub zaus transformer T, kom tag nrho lub hwj chim mov ntim, hnyav hnyav.
2, switching fais fab mov yog kom kov yeej cov shortcomings ntawm linear tswj fais fab mov thiab tshwm sim, vim hais tias ntawm nws lub hwj chim (lub hwj chim) electronics yog ib txwm ua hauj lwm nyob rau hauv lub switching xeev thiab npe.
3, theem tswj fais fab mov yog thyristor theem tswj fais fab mov. Ib yam li kev hloov hluav taws xob, cov theem tswj fais fab hauv lub tshuab hluav taws xob hluav taws xob kuj tseem ua haujlwm nyob rau hauv lub xeev hloov, tsuas yog nws qhov kev khiav hauj lwm zaus yog zaus (50Hz), ntau zaus. Nyob rau hauv sib piv, ib tug tseem ceeb kom zoo dua ntawm theem-tswj fais fab mov yog lub simplicity ntawm Circuit Court thiab kev yooj yim ntawm kev tswj. Nws qhov tsis zoo tseem ceeb kuj yog kom muaj kev lag luam zaus transformer, kom tag nrho cov khoom siv hluav taws xob loj thiab hnyav. Tsis tas li ntawd, theem tswj fais fab mov DC tso zis voltage ripple zaus tsuas yog ob peb zaug ntawm qhov zaus (ib-theem puv-bridge tswj rau 2 zaug, peb-theem tag nrho-bridge tswj rau 6 zaug), xav tau cov lim loj rau muaj kev lim dej zoo dua. Lub zog hloov hluav taws xob DC tso zis voltage ripple zaus yog siab heev, feem ntau siab dua 20kHz, yog li tsuas yog lub lim me me tuaj yeem ua tau. Vim tias qhov hloov qis qis ntawm theem tswj fais fab mov, nws cov lus teb rau kev tswj kuj tseem qeeb dua li qhov hloov pauv hluav taws xob.
Raws li kev cai, kev hloov hluav taws xob yog hais txog lub zog hluav taws xob (lub zog) cov khoom siv hluav taws xob ua haujlwm nyob rau hauv high-frequency switching xeev ntawm DC fais fab mov, thiaj li hu ua high-frequency switching fais fab mov, thiab theem tswj fais fab mov tsis yog. muaj nyob rau hauv lub switching fais fab mov.
