Inductance kwekhoyili

A ukubaluleka kubaluleke kakhulu esisebenzayo icala ekhethekile ka kagesi lokungeniswa mkhuba, okuthiwa i-self-inductance. Ngakho, nxa ikhoyili lokungeniswa yakha zamanje ke kanyekanye nalo kuphakama futhi yokucucuza kazibuthe okwandisa nge okwandisa zamanje. Nge ushintsho ikhoyili kazibuthe ecucuza eheha amandla electromotive (EMF), okuyinto wakhona kazibuthe ecucuza ushintsho ijubane.

Kusukela kulokhu umqhubi eheha amandla electromotive ngokwako, ibizwa ngokuthi self-lokungeniswa. Lo mkhuba wokuzilimaza inductance ezifundeni ngogesi kwenzeka ngezinye izikhathi uma kuqhathaniswa ne ukubonakaliswa inertia e Mechanics.

Amandla electromotive eyenga ku lokungeniswa ikhoyili bedle izinguquko siqu ecucuza yayo kazibuthe ibizwa ngokuthi amandla self-lokungeniswa electromotive.

Ngokomthetho Lenz sika, phakathi lonke ukukhula ecucuza kazibuthe kwakwande ikhoyili Windings, EMF self-eyenga e ikhoyili aqondiswe ngokumelene electromotive amandla umthombo, ifakiwe kule wesifunda futhi uphikisa ukwanda samanje wesifunda ikhoyili.

Lapho samanje ikhoyili ifinyelela ukubaluleka njalo yokucucuza kazibuthe iyeke ukushintsha, futhi EMF self-eyenga e ikhoyili iba zero.
Nge self-lokungeniswa, njengoba kunoma iyiphi inqubo lokungeniswa kagesi, eyenga amandla electromotive kuyinto wakhona ijubane lapho yokucucuza kazibuthe exhumene ne wesifunda lapho notshwala zamanje, washintsha. Ubukhulu yokucucuza kazibuthe ngokungabi bikho zensimbi ezilinganiselwe ikhoyili izinga lapho izinguquko zamanje (ΔI / Δt), odala ukugeleza.

Ngakho, ubukhulu bale amandla electromotive self-lokungeniswa ephakama umqhubi kuyinto wakhona izinga lapho izinguquko zamanje kuwo.
Uma uthatha izintambo tabobunjwa, kuvela ukuthi kokuba izinga elifanayo ushintsho lwamanje, amandla electromotive self-lokungeniswa, okuholela kubo zizohluka.

Ngakho, uma sithatha ikhoyili bese yokwelula kwelinye ithuba ke ngezinga elifanayo lapho ushintsho lwamanje kwenzeka, amandla self-lokungeniswa electromotive kwekhoyili kuyoba isikhathi eside. Lokhu kungenxa yokuthi ngamunye amandla umugqa ikhoyili prinizyvaya ematfuba, ke obandakanya nge inomboro ekulu izikhathi kuka iluphu olulodwa.

Inani, okuyinto ephawula ukuhlobana isivinini ngawo wamanje siyahlukahluka iketanga, futhi lokhu ephakama self-lokungeniswa EMF - inductance wesifunda.

Vumela inductance kwekhoyili yi L incwadi; ngenkathi ukwencika amandla electromotive self-lokungeniswa izinga lapho lamanje washintsha kungenziwa esashiwo fomula elandelayo:

E = - L (ΔI / Δt)

lapha

u L = (ed.E ˖ amayunithi. T) / (ed.I)

Uma kucatshangwa ukuthi kule formula, Δt = 1 yesibili, ΔI = E 1 ampere futhi volt = 1, sithola:

u L = 1 (e ˖ umzuzwana / kahle)

Le yunithi ubizwa ngokuthi henry (H).

Ngakho-ke,

1 Gen. = 1 (e ˖ umzuzwana / kahle)

Ngakho uHenry - iyona inductance kwekhoyili, lapho ushintsho samanje 1 ampere ngomzuzwana ekujabulisayo ibutho self-lokungeniswa electromotive elilingana 1 volt.
Ukuze ekulinganiseni inductances ezincane ezisetshenziswa thousandths of Henry - MH (MH) noma ingxenye eyodwa kweziyisigidi Henry - Uh (UH).

Ngaphezu kwalokho, Balisebenzisa, nezinye iyunithi - isentimitha inductance, nge 1 cm = 1000 Uh inductor.

Ngakho,

1 MH Mr = 1000 = 1.000.000 = 1.000.000.000 Uh cm

I inductance kwekhoyili luncike inombolo yayo ematfuba, umumo kanye nosayizi. Kukhula inani badedelane e ikhoyili self-inductance, aba maningi inductance yayo.

Futhi, ukuzilimaza inductance, ikhoyili inductance inyuka kakhulu lapho ewanika kube umnyombo yensimbi noma omunye umsebenzi kazibuthe.
Elikhulu inductance electromagnets babe Windings e ugesi kanye izinjini, wesifunda avuliwe ngesikhathi lapho izinga loshintsho kagesi (ΔI / Δt) iphezulu kakhulu kulezi Windings lingaba likhulu self-lokungeniswa amandla electromotive okuyinto, uma kungekhona kugwenywe, kuzokwenza ukuwohloka emazombezombe ukwahlukanisa.