Video: Dab tsi yog kev siv lub peev xwm divider?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A muaj peev xwm divider yog ib qho yooj yim circuit uas siv resisters (los yog thermistors / LDR's) los muab qhov sib txawv peev xwm txawv. Lawv tuaj yeem yog siv raws li audiovolume tswj, los tswj qhov kub thiab txias hauv lub freezer lossis kev saib xyuas kev hloov hauv lub teeb hauv chav.
Kuj tseem paub yog, txoj cai faib txoj cai muaj peev xwm yog dab tsi?
Cov lus hais ntawm lub txoj cai yog qhov yooj yim: VoltageDivision Txoj Cai : Cov hluav taws xob yog muab faib nruab nrab ntawm ob seriesresistors nyob rau hauv ncaj qha proportional rau lawv kuj. Nws yog ib qho yooj yim los ua pov thawj qhov no. Hauv kab hauv qab no. VoltageDiver.
Ib sab saum toj no, vim li cas qhov voltage divider bias yog dav siv? Voltage divider biasing feem ntau yog siv vim lub ntsiab yog vim li cas lub transistor nyob rau hauv no kev tsis ncaj ncees ib txwm tseem nyob hauv thaj chaw nquag (cov emitter-base junction yog ib txwm nyob rau pem hauv ntej tsis ncaj ncees lawm ).
Yog li ntawd, yuav ua li cas faib cov cuab yeej siv hauv cov khoom siv hluav taws xob sensor?
Hauv kev tshaj tawm sib txawv thiab cov vev xaib koj yuav pom ob nqe lus siv . Muaj peev xwm dividers yeej faib los faib cov hluav taws xob hauv ib Circuit Court , yog li ntawd qhov chaw ntawm a Circuit Court tsuas tau txais cov hluav taws xob lawv xav tau. Muaj peev xwm dividers feem ntau muaj ob los yog ntau dua resistorsarranged nyob rau hauv series hla ib lub hwj chim mov.
Puas yog potentiometer muaj peev xwm faib tawm?
A potentiometer tsis tu ncua hloov pauv; ib muaj peev xwm divider ua haujlwm hauv cov kauj ruam tsis sib xws, yog li a potentiometer tuaj yeem yog a muaj peev xwm divider ntawm nws qhov chaw ua haujlwm, tab sis a muaj peev xwm divider tsis muaj qhov kev daws teeb meem tsis kawg ntawm a potentiometer.
Pom zoo:
Dab tsi yog qhov txawv ntawm electrostatic muaj peev xwm thiab electrostatic muaj peev xwm zog?
Tsis muaj qhov sib txawv ntawm electrostatic potentialenergy thiab hluav taws xob (al) muaj peev xwm zog. Lub peev xwm hluav taws xob ntawm ib qho taw tes yog kev ua haujlwm los ntawm lwm qhov kev quab yuam hauv kev txav chav tsev zoo los ntawm ib qho arbitrarilychosen xoom ntawm lub peev xwm (feem ntau infinity) mus rau lub ntsiab lus
Puas muaj peev xwm hluav taws xob thiab lub zog muaj peev xwm tib yam Vim li cas lossis vim li cas ho tsis?
Lub zog muaj peev xwm hluav taws xob Ue yog lub zog muaj peev xwm khaws cia thaum cov nqi tawm ntawm qhov sib npaug (xws li lub zog muaj peev xwm gravitational). Lub peev xwm hluav taws xob zoo ib yam, tab sis ib tus nqi, Ueq. Ib qho hluav taws xob muaj peev xwm sib txawv ntawm ob lub ntsiab lus hu ua voltage, V = Ue2q−Ue1q
Dab tsi yog cov qauv ntawm lub zog nyob rau hauv lub peev xwm thiab lub zog kinetic?
Lub zog muaj peev xwm yog khaws cia lub zog thiab lub zog ntawm txoj haujlwm - lub zog gravitational. Muaj ntau hom kev muaj peev xwm muaj zog. Kinetic zog yog kev txav - ntawm nthwv dej, electrons, atoms, molecules, tshuaj, thiab khoom. Chemical Zog yog lub zog khaws cia hauv cov khoom sib txuas ntawm atoms thiab molecules
Puas yog lub zog hauv daim ntawv ntawm kev txav yog lub zog muaj peev xwm?
Lub zog nyob rau hauv daim ntawv ntawm kev txav yog 'muaj peev xwm' zog. Qhov ntau dua 'mas' ib qho khoom txav muaj, lub zog kinetic nws muaj. Lub pob zeb ntawm ntug pob tsuas muaj 'kinetic' zog vim nws txoj hauj lwm. 'Thermal' zog yog lub zog khaws cia los ntawm cov khoom uas ncab los yog compression
Puas muaj peev xwm equilibrium zoo ib yam li so muaj peev xwm?
Qhov sib txawv ntawm daim nyias nyias muaj peev xwm thiab qhov muaj peev xwm sib npaug (-142 mV) sawv cev rau lub zog hluav taws xob hluav taws xob uas tsav Na + mus rau hauv lub xovtooj ntawm lub peev xwm so membrane. Thaum so, txawm li cas los xij, qhov permeability ntawm daim nyias nyias mus rau Na + tsawg heev kom tsuas yog me me Na + xau rau hauv lub cell