Magnetic circuit

iz'u 9% &eSXusfVd l£dV ds izdkj dk fp= lfgr o.kZu dhft, A

mÙkj 9% &vkW;ju d¨j ds ftl ikFk ls ¶yDl xqtjrk gS mls

eSXusfVd l£dV dgrs g® A fp= e— ,d vkW;ju fjax nÓkZbZ xbZ gS] ftldk eSXusfVd ikFk L ehVj gS] ,oa fjax dk Økl lsDÓuy ,fj;k A m² gS A bl fjax ij ,d Dokby yisVh xbZ gS ftl ij N VuZ gS] rFkk bl Dokby e— djaV I izokfgr g¨ jgk gS-

y¨gs dh fjax e— QhYM LVªsUFk~ (H) dk lw= gS%

H	=	(N I) / L …………… AT/m
Since B	=	m₀m_r H
	=	(m₀m_r NI) / L ……… Wb/m²
¶yDl f	=	(B)(A)
	=	{(m₀m_r NI) / L} (A)
	=	(NI) / (L/ m₀m_rA)………. Wb
	=	M.M.F / Reluctance

U;wejsVj NI t¨ eSXusfVd l£dV e— pqEcdRo mRiUu djrk gS d¨ eSXusV¨e¨fVo Q¨lZ (MMF) dgrs g®] bldh bdkbZ ,fEivj VuZ gS- ;g fo|qr~ l£dV ds e.m.f. ds leku gS A fMukWfeusVj (L/ m₀m_rA) d¨ eSXusfVd l£dV dk fjyDV®l dgrs g® A ;g fo|qr~ l£dV ds izfrjks/k ds leku gS A bl lekurk ds dkj.k bls eSXusfVd l£dV

dk vksãl&ykW Hkh dgrs gSa Afo|qr~ l£dV ds leku eSXusfVd l£dV e— Hkh fljht rFkk iSjsyy l£dV g¨rs g® A fn, x, fp= e— fljht eSXusfVd l£dV nÓkZ;k x;k gS A fp= e— nÓkZbZ xbZ MsÓ ykbu ¶yDl dk ehu ikFk nÓkZrk gS fljht l£dV% &fp= e— nÓkZ;s vuqlkj vkW;ju d¨j ij N VuZ dh Dokby yisVh xbZ gS ftle— djaV I izokfgr g¨ jgk gS A ;g djaV vkW;ju d¨j e— ¶yDl mRiUu dj jgk gS ftldk ehu ikFk MsÓ ykbu ls

nÓkZ;k x;k gS- d¨j e— nÓkZ;s LFkku ij ,vj xsi gS A bl eSXusfVd l£dV dk fjyDV®l S, fljht fjyDV®l S_iron rFkk ,vj fjyDV®l S_air ls iwjk g¨rk gS vFkkZr~ eSXusfVd l£dV dk fjyDV®l% &

S_iron + S_air

fjyDV®l v©j ¶yDl dk xq.kuQy] eSXusV¨e¨fVo (M.M.F.) Q¨lZ dgykrk gS A

M.M.F.

(S)(f) = (S_iron + S_air)( f )

eSXusfVd l£dV dk lerqY; bySfDVªd l£dV fp= e— nÓkZ;k x;k gS- M.M.F. dh rqyuk bySfDVªd l£dV e— cSVªh ls dh xbZ gS A

cSVªh o¨YVst E

I ( R_i + R_g )

bySfDVªd l£dV e— R_i d¨ vkW;ju d¨j ds izfrj¨/k R_iron ds lerqY; gS ,oa R_g vkW;ju d¨j dh ,vj xsi R_air ds lerqY; gS rFkk djaV I vkW;ju d¨j ds ¶yDl f ds lerqY; gS A

iSjsyy eSXusfVd l£dV% &fp= e— nÓkZ;s vuqlkj Dokby d¨ d¨j ds lsUVªy fyEc e— yisVh xbZ gS] ftle— djaV I izokfgr g¨ jgk gS A bl djaV ls mRiUu ¶yDl f ikl ds n¨u¨a fyEc e— cjkcj&cjkcj Hkkx e— foHkkftr g¨ tkrs g® A bl eSXusfVd l£dV dk lerqY; bySfDVªd l£dV fp= e— nÓkZ;k x;k gS A bl l£dV ls fuEufyf[kr lehdj.k fy[ks tk ldrs gS% &

M.M.F.	=	f S_ab + (f/2)(S_abc)
E.M.F.	=	IR_m + (I/2)(R_r)

eSXusfVd l£dV ,oa bySfDVªd l£dV e— vUrj fuEukuqlkj gS% &

1. bySfDVªd l£dV e— bUlqysÓu nsdj djaV ds izokg d¨ j¨dk tk ldrk gS] ijUrq eSXusfVd l£dV ds ¶yDl ds izokg d¨ j¨dus ds fy, bUlqysÓu dk izdkj vKkr gS A

2. bySfDVªd l£dV dk izfrj¨/k fLFkj rkieku ij fLFkj jgrk gS A eSXusfVd l£dV dk fjyDV®l mleh ijfe;kfcfyVh ds ifjorZu ds lkFk cnyrk gS-

Questions / Home