Inductance ntawm lub kauj

Ib tug heev ib qho tseem ceeb cov tswv yim tseem ceeb yog ib tug tshwj xeeb cov ntaub ntawv ntawm electromagnetic induction phenomenon, hu ua nws tus kheej-inductance. Yog li, thaum lub induction kauj ntaub ntawv tam sim no, ces ib txhij nrog nws tshwm sim thiab lub magnetic flux uas tsub kom nrog ua tam sim no. Nrog rau cov kev hloov nyob rau hauv magnetic flux kauj induces electromotive quab yuam (EMF), uas yog xwm yeem mus rau magnetic flux hloov ceev.

Txij li thaum nyob rau hauv rooj plaub no tus neeg xyuas pib induces ib tug electromotive quab yuam nyob rau hauv nws tus kheej, nws yog hu ua self-induction. Cov tshwm sim ntawm nws tus kheej-inductance nyob rau hauv hluav taws xob circuits yog tej zaum piv nrog rau manifestation ntawm inertia nyob rau hauv mechanics.

Lub electromotive quab yuam ntxias nyob rau hauv lub induction kauj nyob rau hauv tus ntawm cov kev hloov ntawm nws tus kheej magnetic flux yog hu ua self-induction electromotive quab yuam.

Raws li Lenz txoj cai, thaum lub sij hawm tag nrho txoj kev loj hlob magnetic flux permeated lub kauj windings, self-ntxias EMF nyob rau hauv lub kauj yog qhia tiv thaiv cov electromotive quab yuam qhov twg los, yog muaj nyob rau hauv no Circuit Court thiab counteracts tus nce nyob rau hauv lub tam sim no nyob rau hauv lub kauj Circuit Court.

Thaum lub tam sim no nyob rau hauv lub kauj nce mus txog ib qhov nqi lub sib nqus flux tsis tu tsis tseg kom hloov, thiab nws tus kheej-ntxias EMF nyob rau hauv lub kauj yuav pes tsawg.
Nrog ib tug self-induction, raws li nyob rau hauv tej txheej txheem ntawm electromagnetic induction, ntxias electromotive quab yuam yog proportional rau cov kev ceev ntawm uas tus magnetic flux txuas nrog rau hauv Circuit Court los ntawm kev uas tam sim no tsev, yog hloov. Lub magnitude ntawm lub magnetic flux nyob rau hauv lub qhaj ntawv ntawm hlau nyob rau hauv lub kauj proportional rau tus nqi uas tam sim no hloov (ΔI / Δt), generating cov khiav.

Yog li, qhov ntau ntawm cov electromotive quab yuam ntawm nws tus kheej-induction uas tshwm sim nyob rau hauv ib tug neeg xyuas pib yog proportional rau tus nqi uas tam sim no hloov nyob rau ntawd.
Yog hais tias koj noj cov nyob ntawm tej sib txawv ntawm cov rho los, nws hloov tawm hais tias muaj nqi tib yam kev hloov ntawm tam sim no, electromotive quab yuam ntawm nws tus kheej-induction, uas ua rau lawv yuav sib txawv.

Yog li, yog hais tias peb coj lub kauj thiab ces rub nyob rau hauv ib tug tig, ces nyob rau tib lub nqi ntawm uas tam sim no hloov tshwm sim, nws tus kheej-induction electromotive quab yuam ntawm cov kauj yuav tau ntev. Qhov no yog vim lub fact tias txhua hwj chim kab prinizyvaya kauj lem, nws txhawb cov tub ntxhais nrog rau cov loj tus naj npawb ntawm lub sij hawm tshaj ib zaug xwb voj.

Cov muaj nuj nqis, uas characterizes lub kev twb kev txuas ntawm cov kev ceev uas tam sim no nws txawv nyob rau hauv cov saw hlau, thiab qhov no tshwm sim nyob rau hauv nws tus kheej-induction EMF - inductance Circuit Court.

Cia lub inductance ntawm lub kauj los ntawm tsab ntawv L; thaum lub sij hawm nyob tos ntawm lub electromotive quab yuam ntawm nws tus kheej-induction nqi ntawm uas tam sim no yog hloov yuav tsum qhia los ntawm cov nram qab no mis:

E = - L (ΔI / Δt)

no

u L = (ed.E ˖ units. T) / (ed.I)

Piv txwv tias yog tias nyob rau hauv cov mis no, Δt = 1 thib ob, ΔI = E 1 ampere thiab volt = 1, peb tau:

u L = 1 (nyob rau hauv ˖ sec / zoo)

Qhov no unit yog hu ua tus henry (H).

yog li ntawd,

1 Gn = 1 (nyob rau hauv ˖ sec / zoo)

Yog li ntawd Henry - yog lub inductance ntawm lub kauj, uas tam sim no hloov ntawm 1 ampere ib ob excites lub self-induction electromotive quab yuam sib npaug zos rau 1 volt.
Ntsuas me me inductances siv thousandths ntawm Henry - Mh (Mh) los yog millionths ntawm Henry - uh (uh).

Nyob rau hauv tas li ntawd, feem ntau siv, thiab lwm yam tsev - centimeter inductance, nrog 1 cm = 1000 uh inductor.

Yog li,

1 Mh Mr = 1000 = 1,000,000 = 1,000,000,000 uh cm

Lub inductance ntawm lub kauj yog nyob rau ntawm nws tus naj npawb ntawm koj lem, zoo thiab loj. Qhov ntau dua tus xov tooj ntawm koj lem nyob rau hauv lub kauj kheej-inductance, qhov ntau dua nws inductance.

Tsis tas li ntawd, nws tus kheej-inductance, lub kauj inductance nce considerably thaum qhia nws mus rau hauv tus tub ntxhais ntawm hlau los yog lwm yam sib nqus khoom.
Loj inductance electromagnets muaj windings nyob rau hauv generators thiab motors, qhib Circuit Court thaum lub sij hawm thaum tus nqi ntawm kev hloov ntawm hluav taws xob tam sim no (ΔI / Δt) yog heev nyob rau hauv cov windings tej zaum yuav loj rau tus kheej-induction electromotive dag zog yuam uas, yog hais tias tsis zam, yuav ua rau lub neej puas winding rwb thaiv tsev.