Inductance nke eriri igwe

A nnọọ mkpa bara uru bụ a pụrụ iche ikpe nke akpa itinye n'ọkwa onu, a na-akpọ onwe-inductance. N'ihi ya, mgbe itinye n'ọkwa eriri igwe Nleta a ugbu a, mgbe ahụ, n'otu oge na ọ na-ebilite na magnetik agbanwe oge nke enwekwu na-amụba ugbu a. Na mgbanwe magnetik agbanwe oge eriri igwe induces electromotive ike (EMF), nke bụ proportional ka magnet agbanwe oge mgbanwe ọsọ.

Ebe ọ bụ na a ikpe na-eduzi induces ihe electromotive ike n'onwe ya, ọ na-akpọ onwe-itinye n'ọkwa. Na onu nke onwe-inductance ke eletriki na sekit na sekit na-mgbe ụfọdụ tụnyere mpụta ìhè nke inertia na-arụzi ụgbọala.

The electromotive ike rata na itinye n'ọkwa eriri igwe n'okpuru nduzi nke mgbanwe nke ya magnetik agbanwe oge a na-akpọ onwe-itinye n'ọkwa electromotive ike.

Dị ka Lenz iwu, n'oge dum ibu magnetik agbanwe oge jupụtara na eriri igwe windings, onwe na-akpata EMF na eriri igwe na-eduzi megide electromotive ike isi iyi, a gụnyere na nke a circuit ma mee ka na-abawanye na nke ugbu a na eriri igwe circuit.

Mgbe ugbu a na eriri igwe esịmde a mgbe nile uru magnetik agbanwe oge na-akwụsị ịgbanwe, na onwe-akpata EMF na eriri igwe na-aghọ efu.
Na a onwe-itinye n'ọkwa, dị ka ọ bụla usoro nke akpa itinye n'ọkwa, rata electromotive ike bụ proportional ka ọsọ na nke magnetik agbanwe oge ndị so circuit site na nke ugbu a aga, ihe gbanwere. The ịdị ukwuu nke magnetik agbanwe oge na-anọghị nke ígwè na eriri igwe proportional ka ọnụego ya na nke ugbu a mgbanwe (ΔI / Δt), ha na-eruba.

N'ihi ya, ịdị ukwuu nke electromotive ike nke onwe onye na-itinye n'ọkwa na edemede na a na-eduzi ya bụ proportional ka ọnụego ya na nke ugbu a mgbanwe nime ya.
Ọ bụrụ na ị na-wires nke dị iche iche shapes, ọ na-enyo na ndị nwere otu ọnụego nke mgbanwe nke ugbu a, electromotive ike nke onwe onye na-itinye n'ọkwa, na-akpata ha ga-adị iche.

N'ihi ya, ọ bụrụ na anyị na-eriri igwe na mgbe ahụ ka ọ gbatịa n'otu uzo, mgbe ahụ, n'otu ọnụego ya na nke ugbu a mgbanwe etịbe, onwe onye na-itinye n'ọkwa electromotive ike nke eriri igwe ga-aba. Nke a bụ n'ihi na eziokwu na nke ọ bụla ike akara prinizyvaya eriri igwe ibe, ọ na-eme na ibu ọnụ ọgụgụ nke ugboro karịa otu akaghị.

Na nke ukwu, nke e ji mara njikọ dị n'etiti ndị na-agba na nke ugbu a dịgasị na yinye, na nke a na-ebilite ke onwe-itinye n'ọkwa EMF - inductance circuit.

Ka inductance nke eriri igwe site na akwụkwọ ozi L; mgbe na nduzi nke electromotive ike nke onwe onye na-itinye n'ọkwa ọnụego ya na nke ugbu a na-gbanwere nwere ike kwupụtara na-esonụ usoro:

E = - L (ΔI / Δt)

ebe a

ị L = (ed.E ˖ nkeji. T) / (ed.I)

Anya isi na a na usoro, Δt = 1 abụọ, ΔI = E 1 ampere na volt = 1, anyị nweta:

ị L = 1 (na ˖ sec / ọma)

Nke a unit na-akpọ Henry (H).

ya mere,

1 GN = 1 (na ˖ sec / ọma)

Ya mere Henry - bụ inductance nke eriri igwe, nke ugbu a mgbanwe nke 1 ampere kwa abụọ excites onwe onye na-itinye n'ọkwa electromotive ike hà 1 volt.
N'ihi na atụ obere inductances eji thousandths nke Henry - MH (MH) ma ọ bụ millionths nke Henry - Uh (Uh).

Ke adianade do, ugboro ugboro ji, na ndị ọzọ na unit - sentimita inductance, na 1 cm = 1000 Uh inductor.

N'ihi ya,

1 MH Mr = 1000 = 1,000,000 = 1,000,000,000 Uh cm

The inductance nke eriri igwe bụ dabere na ya ọnụ ọgụgụ nke ibe, na udi ma na size. The ukwuu ọnụ ọgụgụ nke ibe na eriri igwe onwe-inductance, nke ukwuu ya inductance.

Ọzọkwa, onwe onye na-inductance, na eriri igwe inductance abawanye nke ukwu mgbe ewebata ya n'ime isi nke ígwè ma ọ bụ ihe ọ bụla ọzọ magnetik ihe onwunwe.
Large inductance electromagnets nwere windings na generators na Motors, oghe circuit mgbe ọnụego nke mgbanwe nke eletrik (ΔI / Δt) dị nnọọ elu na ndị a windings nwere ike nnukwu onwe-itinye n'ọkwa electromotive ike nke, ma ọ bụrụ na ọ bụghị ẹse, ga-eme ka mmebi asọfe mkpuchi.