The inductive reactance na AC circuit

Nguzogide na eletriki circuit bụ nke abụọ ụdị - arụsi ọrụ ike na reactive. Active anọchi anya resistors, incandescent, kpo oku coils na na. Na ọzọ okwu, ihe niile ọcha na nke ugbu a eruba na-na-arụ bara uru ọrụ ma ọ bụ, na a pụrụ iche ikpe, na-emepụta na chọrọ kpo oku eduzi. N'aka nke ya, na-ugboelu - nche anwụ okwu. Ọ na-ezo aka capacitive na inductive reactance. The circuit ọcha na-enwe a reactance, Itie eletrik ime dị iche iche n'etiti ume akakabarede. A capacitor (capacitance) accumulates-ndebe, na mgbe ahụ na-eziga ya ka akaghị. Ihe atụ ọzọ - na inductive reactance nke eriri igwe, nke òkè nke eletriki ume converted n'ime a ndọta.

N'eziokwu, "dị ọcha" ma ọ bụ ike reactances bụghị. Always na-abụghị akụrụngwa bụ ugbu. Ihe atụ, mgbe ịgbakọ wires maka anya ike edoghi, gaa na akaụntụ bụghị naanị ndị na-eguzogide, ma capacitive. Ịtụle ihe inductive reactance, ọ ga-echeta na ma na-eduzi na ike ọkọnọ na-eme mgbanwe ụfọdụ na calculations.

Site n'ịchọpụta ngụkọta eguzogide nke circuit òkè, ọ dị mkpa ka n'ogige atụrụ na-arụsi ọrụ ike na reactive mmiri. Ọzọkwa, na-a kpọmkwem nchikota nke mbụ mgbakọ na mwepụ arụmọrụ-agaghị ekwe omume, ya mere, iji geometric (vector) ụzọ iwu. Na-ewuli a nri triangle onye cathetus abụọ ndị nọ n'ọrụ na inductive impedance, na hypotenuse - zuru. Na ogologo nke agba kwekọrọ na ya ugbu a.

Tụlee inductive reactance na AC circuit. Na-anọchi anya a dị mfe circuit esịnede a ike isi iyi (emf, E), a resistor (resistive akụrụngwa, R) na eriri igwe (inductance, L). Ebe ọ bụ na inductive reactance bụ n'ihi na onwe-akpata EMF (E B) na ibe nke eriri igwe, ọ bụ doro anya na ọ na-enwekwu na sekit inductance na-abawanye uru nke ugbu a na-eru site na circuit.

Ohm iwu a circuit anya dị ka:

E + E B = m * R.

Mgbe na-ekpebi oge emepụta nke ugbu a (m PR) gbakọọ onwe-itinye n'ọkwa:

E si = -L * m Ave.

"-" ihe ịrịba ama na akụkụ na-egosi na mmetụta nke E si eduzi megide na-agbanwe agbanwe na nke ugbu a uru. Lenz iwu na-ekwu na ọ bụrụ na e ọ bụla mgbanwe na ugbu a onwe-akpata EMF. Ebe ọ bụ na mgbanwe dị otú ahụ na sekit na sekit AC bụ eke (na na mgbe nile), ndị E B Nleta a ọkpụrụkpụ na-eguzogide ma ọ bụ na-na-ezi ndị na-eguzogide. Bụrụ na nke a ike isi iyi nke kpọmkwem ugbu a , mmekọrịta a abụghị afọ na mgbe mgbalị ijikọ eriri igwe (inductance) dị otú ahụ a circuit ga Egbubikwala mere classic

Iji merie E B ike ọkọnọ ga n'ịwa a nwere ihe dị iche na eriri igwe Nchoputa na ọ bụ ezughị, ọbụlagodi na E si na-eguzogide asato. Ọ ndị a:

U = -E cat si.

Na ndị ọzọ okwu, voltaji gafee inductor bụ numerically hà electromotive ike nke onwe onye na-itinye n'ọkwa.

Ebe ọ bụ na na-amụba ugbu a na circuit enwekwu ndị ndọta n'aka site Eddy ubi na-eme ka uto na countercurrent inductance, otu onye nwere ike ịgwa na ọ bụ a na-adọ ịgbanwee n'etiti voltaji na ugbu a. N'ihi ya otu atụmatụ: n'ihi na onwe onye na-itinye n'ọkwa EMF egbochi mgbanwe ọ bụla na nke ugbu a, mgbe ọ na-enwekwu (akpa nkeji iri na ise na oge nke a sinusoid na) counter ubi na-eme, ma ọdịda (nke abụọ okwu) on Kama - na rata ugbu a bụ codirectional na isi. Nke ahụ bụ, ma ọ bụrụ na ndị postulate ịdị adị nke onye na mma ike isi iyi enweghị esịtidem-eguzogide ma na inductance enweghị n'ọrụ akụrụngwa, ndị vibration ike "isi iyi - eriri igwe" nwere ike ime ruo mgbe ebighị ebi.