Cheebtsam ntawm Hloov Cov Khoom Siv Hluav Taws Xob
Lub tswv yim ntawm kev hloov hluav taws xob feem ntau yog AC lub zog (xws li lub zog hluav taws xob) lossis DC lub zog, thaum cov zis feem ntau yog cov khoom siv uas xav tau DC lub zog, xws li cov khoos phis tawj ntawm tus kheej. Hloov cov khoom siv hluav taws xob hloov qhov voltage thiab tam sim no ntawm ob.
Hloov cov khoom siv hluav taws xob sib txawv ntawm cov khoom siv hluav taws xob linear. Hloov cov transistors siv nyob rau hauv kev hloov cov khoom siv hluav taws xob feem ntau yog hloov ntawm hom qhib siab (saturation cheeb tsam) thiab tag nrho kaw hom (txiav cheeb tsam), ob qho tib si uas muaj cov yam ntxwv ntawm lub zog qis. Kev hloov pauv ntawm cov kev hloov pauv yuav muaj kev cuam tshuam ntau, tab sis lub sijhawm luv luv, yog li nws muaj zog ntau dua -ntau thiab ua kom muaj cua sov tsawg dua. Qhov zoo tshaj plaws, lub zog hloov hluav taws xob nws tus kheej tsis siv hluav taws xob hluav taws xob. Voltage stabilization yog ua tiav los ntawm kev kho lub sijhawm ntawm - lub sijhawm thiab lub sijhawm tawm ntawm transistors. Ntawm qhov tsis sib xws, nyob rau hauv tus txheej txheem ntawm tsim cov zis voltage, lub transistor ntawm ib tug linear fais fab mov ua hauj lwm nyob rau hauv lub amplification cheeb tsam thiab siv hluav taws xob hluav taws xob nws tus kheej.
Kev hloov pauv siab ntawm cov khoom siv hluav taws xob hloov pauv yog ib qho ntawm lawv qhov zoo, thiab vim tias hloov cov khoom siv hluav taws xob muaj qhov ua haujlwm siab, lawv tuaj yeem siv cov hloov pauv me me - thiab lub teeb yuag. Yog li ntawd, hloov cov khoom siv hluav taws xob kuj tseem me me thiab sib dua hauv qhov hnyav dua li cov khoom siv hluav taws xob linear.
Yog tias qhov kev ua haujlwm siab, ntim, thiab qhov hnyav ntawm cov khoom siv hluav taws xob yog qhov tseem ceeb, hloov hom fais fab mov zoo dua li cov khoom siv hluav taws xob. Txawm li cas los xij, cov khoom siv hluav taws xob hloov pauv yog qhov nyuaj, nrog kev hloov pauv ntawm cov khoom siv sab hauv. Yog tias qhov hloov pauv tam sim no tseem ua tiav, nws yuav ua rau muaj suab nrov thiab cuam tshuam electromagnetic uas tuaj yeem cuam tshuam rau lwm yam khoom siv. Ntxiv mus, yog tias qhov hloov pauv hom fais fab mov tsis yog tsim tshwj xeeb, nws lub zog hluav taws xob yuav tsis siab.
Cheebtsam ntawm Switching Power Supply
1. Main Circuit Court
Impulse tam sim no limiting: Txwv cov impulse tam sim no ntawm sab input thaum lub hwj chim qhib.
Input filter: Nws txoj haujlwm yog lim tawm cov clutter uas muaj nyob rau hauv daim phiaj fais fab thiab cuam tshuam cov lus tawm tswv yim ntawm cov clutter tsim los ntawm lub tshuab rov qab rau hauv daim phiaj fais fab.
Rectification thiab filtering: ncaj qha kho qhov AC fais fab mov ntawm daim phiaj hluav taws xob rau hauv lub zog DC smoother.
Inverter: Hloov kho DC lub zog rau hauv siab - zaus AC lub zog, uas yog qhov tseem ceeb ntawm siab - zaus hloov hluav taws xob.
Output rectification thiab filtering: Muab ruaj khov thiab txhim khu kev qha DC fais fab mov raws li qhov yuav tsum tau ua.
2. Tswj Circuit Court
Ntawm qhov tod tes, cov qauv raug coj los ntawm qhov tso zis davhlau ya nyob twg, piv nrog cov nqi teev, thiab tom qab ntawd lub inverter yog tswj los hloov nws cov mem tes dav lossis zaus kom ruaj khov cov zis. Ntawm qhov tod tes, raws li cov ntaub ntawv muab los ntawm kev ntsuas ntsuas hluav taws xob, ntau yam kev tiv thaiv kev tiv thaiv tau muab rau cov khoom siv hluav taws xob los ntawm kev tswj xyuas Circuit Court tom qab kev txheeb xyuas los ntawm kev tiv thaiv Circuit Court.
3. Kev kuaj xyuas Circuit Court
Muab ntau yam kev ntsuas thiab ntsuas cov ntaub ntawv uas tam sim no khiav hauv kev tiv thaiv Circuit Court.
4. Pab txhawb zog
Siv software (chaw taws teeb) pib rau lub hwj huam mov, muab lub zog rau kev tiv thaiv circuits thiab tswj circuits (PWM chips, thiab lwm yam).
