semi conductors
TRANSCRIPT
B SiSi
Si
Si
SiSi
Si Si
l=yr
Hole
fï wdldrhg iEu B mrudKqjla ksidu tla Ok wdfrdams; l=yrhla
ne.ska we;sfõ'
P j¾.fha w¾O ikakdhl iii jk LdKavfha we;s B mrudKqjla Si lene,a,lg tl;= lsrSfuka P
j¾.fha w¾O ikakdhl idod.; yelsh'
Si mrudKq - 1000
B mrudKq - 10
l=yr - 10
WIaK;ajh ksid we;sjk
ksoyia e - 1l=yra - 1
P j¾.fha w¾O ikakdhlhl
nyq;r jdylh - l=yr
w,am;r jdylh - ksoyia e
As SiSi
Si
Si
SiSi
Si Si
ksoyia e h
fï wdldrhg iEu As mrudKqjla ksidu tla ksoyia bf,lafg%daKhla
ne.ska we;sfõ'
n - j¾.fha w¾O ikakdhlv jk LdKavfha we;s As mrudKqjla Si lene,a,lg tl;= lsrSfuka n -
j¾.fha w¾O ikakdhl idod.; yelsh'
Si mrudKq - 1000
As mrudKq - 10
ksoyia e - 10
WIaK;ajh ksid we;sjk
ksoyia e - 1l=yra - 1
n - j¾.fha w¾O ikakdhlhl
nyq;r jdylh - ksoyia ew,am;r jdylh - l=yr
n - j¾.fha w¾O ikakdhlh
nyq;r jdylh - ksoyia ew,am;r jdylh - l=yr
P j¾.fha w¾O ikakdhlh
nyq;r jdylh - l=yr
w,am;r jdylh - ksoyia e
ksoyia el=yr
P j¾.fha iy n - j¾.fha w¾O ikakdhl folla tlg iam¾I jk fia ikaê lsrSfuka vfhdavhla idod .; yelsh'
Junction Diode ikaê vfhdavh
ksoyia el=yr
P j¾.fha iy n - j¾.fha w¾O ikakdhl folla tlg iam¾I jk fia ikaê lsrSfuka vfhdavhla idod .; yelsh'
n - j¾.fha w¾O ikakdhlhlh
nyq;r jdylh - ksoyia ew,am;r jdylh - l=yr
P j¾.fha w¾O ikakdhlhlh
nyq;r jdylh - l=yr
w,am;r jdylh - ksoyia e
ikaêh wi,u ol=Kq me;af;a ;sfnk bf,lafg%daK iaj,amhla jïme;af;a l=yr ;=,g msfrk ksid ikaêh wjg úoHq;a lafIa;%hla we;sfõ'
P w¾O ikakdhlfha ikaêh wi, idfmalaI iDK (-) wdfrdamKhla we;sfõ'
n w¾O ikakdhlfha ikaêh wi, idfmalaI Ok (+) wdfrdamKhla we;sfõ'
Junction Diode ikaê vfhdavh
ksoyia el=yr
ikaêh wi,u ol=Kq me;af;a ;sfnk bf,lafg%daK iaj,amhla jïme;af;a l=yr ;=,g msfrk ksid ikaêh wjg úoHq;a lafIa;%hla we;sfõ'
P w¾O ikakdhlfha ikaêh wi, idfmalaI iDK wdfrdamKhla we;sfõ'
n w¾O ikakdhlfha ikaêh wi, idfmalaI Ok wdfrdamKhla we;sfõ'
Vb úNj ndOlh
ySk ia:rh$ydhs; fmfoi
Junction Diode ikaê vfhdavh
Vb hkq úNj wka;rhls'
Vb úNj ndOlh
ySk ia:rh$ydhs; fmfoi
Si j,ska iE¥ vfhdav i|ydVb = 0.6 V fyda 0.6 V'
Ge vfhdav i|ydVb = 0.2 V fyda 0.3 V'
Junction Diode ikaê vfhdavh
Junction Diode ikaê vfhdavh
ksoyia el=yr
Vb hkq úNj wka;rhls'
Si j,ska iE¥ vfhdav i|ydVb = 0.6 V fyda 0.6 V'
Ge vfhdav i|ydVb = 0.2 V fyda 0.3 V'
fuu ySk ia:rh fyj;a ydhs; fmfofia
wdfrdamKh Q , úNjh V , lafIa;% ;Sj%;dj E , ÿr iu. fjkia jk wdldrh
úNjhlafIa;% ;Sj%;djwdfrdamKh
ÿr
0
1
2
3
4
iaùph
ON lrkak'
0
1
2
3
4
ySk ia:rh$ydhs; fmfoi
Vb úNj ndOlh
Vs úNj iemhqu
V fjda,aÜ ógrh
A weógrh
Odrd kshdulh
vfhdavhl fmr keUqr
ikaê vfhdavfha úNj ndOlhg jvd jeä úNj wka;rhlaby; wdldrhg
wefkdavhg Ok w.%h o lef;davhg iDK w.%h o jk fia
iïnkaO lsÍfuka vfhdavh yryd úoHq;a Odrdjla .,hs'
Vs
p n
Forward Bias
ySk ia:rh$ydhs; fmfoi mq¿,a fõ
Vb úNj ndOlh jeä fõ
Odrd kshdulhfjkia lrkakf
vfhdavhl miq keUqrReverse Bias
Odrd kshdulhfjkia lrkakf
ySk ia:rh$ydhs; fmfoi mq¿,a fõ
Vb úNj ndOlh jeä fõvfhdavhl miq keUqrReverse Bias
ySk ia:rh$ydhs; fmfoi mq¿,a fõ
Vb úNj ndOlh jeä fõ
w¾O ikakdhl w;r ydhs; fmfoi mq¿,a úfuka úNj ndOlhjeä fõ'
vfhdavhl miq keUqrReverse Bias
vfhdavhl miq keUqr
ikaê vfhdavhg úNj wka;rhla by; wdldrhgwefkdavhg iDK w.%h o
lef;davhg Ok w.%h o jk fiaiïnkaO lsÍfuka vfhdavh yryd úoHq;a Odrdjla .,d fkdhhs'
Reverse Bias
Vs
p n
ms<s;=r f;darkak
(1) A muKla i;H fõ'
(2) B muKla i;H fõ'
(3) C muKla i;H fõ'
(4) B,C muKla i;H fõ'
(5) A,B iy C hk ish,a,u i;H fõ'
ms<s;=r f;darkak
(1) A muKla i;H fõ'
(2) B muKla i;H fõ'
(3) C muKla i;H fõ'
(4) A ,C muKla i;H fõ'
(5) A,B iy C hk ish,a,u i;H fõ'
ms<s;=r f;darkak
(1) A muKla i;H fõ'
(2) B muKla i;H fõ'
(3) C muKla i;H fõ'
(4) A ,C muKla i;H fõ'
(5) A,B iy C hk ish,a,u i;H fõ'
ms<s;=r f;darkak
(1) A muKla i;H fõ'
(2) B muKla i;H fõ'
(3) C muKla i;H fõ'
(4) B ,C muKla i;H fõ'
(5) A,B iy C hk ish,a,u i;H fõ'
ms<s;=r f;darkak
(1) A muKla i;H fõ'
(2) B muKla i;H fõ'
(3) C muKla i;H fõ'
(4) B ,C muKla i;H fõ'
(5) A,B iy C hk ish,a,u i;H fõ'