Nyob rau hauv lub series Circuit Court ntawmDC hluav taws xob load, qhov tam sim no ntawm txhua qhov chaw yog tib yam, thiab lub voj voog yuav tsum ua haujlwm nrog qhov tam sim no tsis tu ncua.Ntev npaum li qhov tam sim no ntws los ntawm ib qho kev tivthaiv yog tswj nyob rau hauv series Circuit Court, qhov tso zis tam sim no peb tswj tau tiav.
Ib qho yooj yim tsis tu ncua tam sim no Circuit Court, feem ntau yog siv rau hauv daim ntawv thov uas tsis muaj zog thiab tsis tshua muaj kev xav tau.Nyob rau hauv lwm yam kev siv, lub Circuit Court no tsis muaj hwj chim, xws li: thaum lub input voltage yog 1V thiab input tam sim no yog 30A,
Qhov kev xav tau no tsis tuaj yeem lav qhov ua haujlwm ntawm txhua qhov, thiab nws tsis yooj yim heev rau Circuit Court los kho cov zis tam sim no.
Ib qho ntawm feem ntau siv tam sim no circuits, xws li ib tug Circuit Court yog yooj yim dua kom tau txais cov nqi ruaj khov thiab raug tam sim no, R3 yog ib tug sampling resistor, thiab VREF yog ib tug muab teeb liab.
Lub hauv paus ntsiab lus ua haujlwm ntawm lub voj voog yog, muab lub teeb liab VREF: Thaum qhov hluav taws xob ntawm R3 tsawg dua VREF, uas yog, -IN ntawm OP07 tsawg dua + IN, cov zis ntawm OP07 yog nce, kom MOS nce. thiab tam sim no ntawm R3 yog nce;
Thaum qhov hluav taws xob ntawm R3 ntau dua VREF, -IN yog ntau dua + IN, thiab OP07 txo cov zis, uas kuj txo qhov tam sim no ntawm R3, kom lub Circuit Court thaum kawg khaws cia ntawm tus nqi tas mus li, uas tseem paub qhov tam sim no. kev ua haujlwm;
Thaum qhov muab VREF yog 10mV thiab R3 yog 0.01 ohm, qhov tam sim no ntawm Circuit Court yog 1A, tus nqi tam sim no tuaj yeem hloov pauv los ntawm kev hloov VREF, VREF tuaj yeem hloov kho los ntawm potentiometer lossis DAC nti tuaj yeem siv los tswj. cov tswv yim los ntawm MCU,
Cov zis tam sim no tuaj yeem hloov kho manually los ntawm kev siv potentiometer.Yog tias siv DAC cov tswv yim, lub tshuab hluav taws xob digitally tswj tsis tu ncua tam sim no tuaj yeem ua tiav.Tsau layout
Teem ib qhov dav thiab qhov siab ruaj khov ntawm lub toolbar.Cov keeb kwm yav dhau tuaj yeem raug teeb tsa kom suav nrog.Nws tuaj yeem ua tiav cov duab tom qab thiab cov ntawv nyeem thiab ua rau koj tus kheej template.
Circuit Court simulation pov thawj:
Tsis tu ncua voltage Circuit Court
Ib qho yooj yim qhov hluav taws xob tsis tu ncua, tsuas yog siv Zener diode.
Lub input voltage yog txwv rau 10V, thiab qhov hluav taws xob tsis tu ncua yog qhov tseem ceeb heev thaum siv los ntsuas lub charger.Peb tuaj yeem maj mam kho qhov voltage los kuaj ntau yam lus teb ntawm lub charger.
Qhov voltage ntawm MOS raj muab faib los ntawm R3 thiab R2 thiab xa mus rau lub chaw ua haujlwm amplifier IN + rau kev sib piv nrog tus nqi muab.Raws li pom hauv daim duab, thaum lub potentiometer yog 10%, IN- yog 1V, ces qhov voltage ntawm MOS raj yuav tsum yog 2V.
Tsis tu ncua Circuit Court
Rau qhov ua haujlwm tsis tu ncua, hauv qee qhov kev suav lejhluav taws xob loads, tsis muaj qhov tshwj xeeb Circuit Court tsim, tab sis tam sim no yog xam los ntawm cov input voltage kuaj pom los ntawm MCU raws li qhov tam sim no Circuit Court, thiaj li ua tiav lub hom phiaj ntawm kev ua haujlwm tsis tu ncua.
Piv txwv li, thaum qhov tsis tu ncua yog 10 ohms, thiab MCU pom tias qhov input voltage yog 20V, nws yuav tswj cov zis tam sim no yog 2A.
Txawm li cas los xij, txoj kev no muaj cov lus teb qeeb thiab tsuas yog tsim nyog rau lub sijhawm uas cov tswv yim hloov maj mam thiab cov kev xav tau tsis siab.Kev ua haujlwm tsis tu ncuahluav taws xob loadsyog paub los ntawm hardware.
Lub zog hluav taws xob tsis tu ncua
Kev ua haujlwm tsis tu ncua Feem ntauhluav taws xob loadsyog siv los ntawm qhov tam sim no Circuit Court.Lub hauv paus ntsiab lus yog tias MCU suav cov zis tam sim no raws li cov nqi hluav taws xob tau teeb tsa tom qab ntsuas qhov ntsuas hluav taws xob.
Post lub sij hawm: Oct-19-2022
