Hloov cov khoom siv hluav taws xob muaj peb yam xwm txheej
Txoj Cai Ua Haujlwm ntawm Hloov Cov Khoom Siv Hluav Taws Xob
Cov txheej txheem ua haujlwm ntawm kev hloov hluav taws xob hloov pauv tau yooj yim to taub, nyob rau hauv linear fais fab mov, cia lub hwj chim transistor ua hauj lwm nyob rau hauv linear hom, tsis zoo li linear fais fab mov, pWM switching fais fab mov yog cia lub hwj chim transistor ua hauj lwm nyob rau hauv lub xeev thiab tawm. -state, nyob rau hauv ob lub xeev no, cov khoom volt-ampere ntxiv rau lub hwj chim transistor yog me me (nyob rau hauv lub xeev, qhov voltage yog tsawg, thiab tam sim no loj; nyob rau hauv lub off-lub xeev, lub voltage yog siab, thiab tam sim no me me) / cov khoom siv hluav taws xob Cov khoom siv hluav taws xob volt-ampere ntawm lub tshuab hluav taws xob yog qhov poob tshwm sim ntawm cov khoom siv hluav taws xob semiconductor. Piv nrog rau cov khoom siv hluav taws xob tawm, pWM hloov cov khoom siv hluav taws xob ua haujlwm tau zoo dua los ntawm "taws", piv txwv li chopping lub input DC voltage rau hauv pulses ntawm amplitude sib npaug rau qhov input voltage amplitude. Lub luag haujlwm lub voj voog ntawm cov mem tes yog hloov kho los ntawm tus maub los ntawm lub zog hloov hluav taws xob. Thaum cov input voltage raug txiav mus rau hauv AC square nthwv dej, nws qhov amplitude tuaj yeem raug tsa los yog qis dua los ntawm lub tshuab hloov pauv. Tus naj npawb ntawm cov zis hluav taws xob pab pawg tuaj yeem nce ntxiv los ntawm kev nce tus naj npawb ntawm cov windings thib ob hauv lub transformer. Thaum kawg cov AC waveforms tau kho thiab lim kom tau txais DC cov zis hluav taws xob. Lub hom phiaj tseem ceeb ntawm tus maub los yog ua kom cov zis voltage ruaj khov thiab cov txheej txheem zoo ib yam li cov kab hluav taws xob ntawm cov maub los. Qhov no txhais tau hais tias cov kev ua haujlwm ntawm cov tswj hwm, qhov kev siv hluav taws xob thiab qhov yuam kev amplifier, tuaj yeem tsim tau tib yam li cov kab hluav taws xob regulator. Qhov txawv yog tias qhov tso zis ntawm qhov yuam kev amplifier (qhov yuam kev voltage) dhau los ntawm lub zog hluav taws xob / mem tes dav hloov pauv chav ua ntej tsav lub hwj chim raj. Hloov cov khoom siv hluav taws xob muaj ob hom kev ua haujlwm tseem ceeb: kev hloov pauv mus rau pem hauv ntej thiab txhawb kev hloov pauv. Txawm hais tias qhov sib txawv ntawm lawv cov khoom sib txawv me me, cov txheej txheem kev khiav hauj lwm sib txawv heev, thiab txhua tus muaj nws tus kheej zoo rau ib daim ntawv thov tshwj xeeb.
Peb cov xwm txheej rau kev hloov cov khoom siv hluav taws xob
Hloov
Lub zog hluav taws xob ua haujlwm nyob rau hauv lub xeev hloov tsis yog nyob rau hauv lub xeev linear.
Ntau zaus
Cov hluav taws xob hluav taws xob ua haujlwm ntawm cov khoom siv hluav taws xob siab ntau dua li cov zaus qis qis ze rau kev lag luam zaus.
DC
Hloov cov khoom siv hluav taws xob tso tawm DC hloov AC lossis lawv tuaj yeem tso tawm AC zaus xws li hluav taws xob hloov hluav taws xob.
