Name of the Subject:
Unit No:
Name of the Faculty:C. Ashok Kuuna
Lecture No:
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CONSTPVCTION
Dcain
n Chaunel
GateG)
Deplefon
Deplenau
agic
bSotce
okanel btweeu tue embedded us ofPtte mafel.
Top of M-tufe Chaunel in Couuected thhgh a u ohue Cecnct
to feuuiu ufeted s tuu daia( D), hhnes
lnwescend of
a
Aame
mateial i Couueed ttoamqh
an
Hemnn udnd to as the Aousces).
e fwo Ptye mntbins ae Councfed
touminak
ohuie CoutncL to
o
togetue aund +o t GrteG
Intuabseute of au apd Pofeutiak tu
TFET hwfwo P-n
jctiows md mo-bins Couditty. The
aRoejuuCAim Ahowu iu ique, ?wswltry deplefioy vegom
JFET Sqmbds
Vps
M- Chane F
P-haunel TtET
JFET Opekatiua, ChactoishOS
he e
twee baic op&nfua ConditiS
O V s O, Vps iuahing to Soue Posihue Vae
G < 0, Vps t Koue Pokitive Value
voluge Coutveled trasstö.
OVs
O,
Vps ineingto Aouye fo4itive Value
D
G s Ov
f
M Chaune
YpD
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Page No: 2
| s Ahoou lw Fig, a
Poitive Voltge Vpe rin afplied acusn
Chaunel and 2nde is Councfel diteoty to taAeece to asfabliAh
Conditm Vgs
=
OV.
Vps nceeated frm
Ov
to few velk, Theu,
he
duXefion kesin betmeen Pgate aud -Chaunel tudceases
Tuceaiuq tue desketom tugioM, deckcaMes tu ize of -Chanuel
Which iSeaAes tue Rehstauce
Eveu
of M-Chaunel.
tuengh, M- Chavunel ftuksfaute 1s ncteasing, tue
CWGaut
rom Aovkce to doeauiu temgh te
Tuinrin beCawe Vos m inOLeating
M-
Chauuel is udoasing
finch
off
1f Voc 0 aud Vpg a gustut inckeeasel to av
pke teAifrne volage, teu it afpests that two
depkatieM fegions
would touch s shouu iu ig.3,Coudifsm suefeud to as
Prch off will s l t . The leme ot Vpe tunttalishes tux
Coustim im ruserudto
as
Puch. of valtnge aud deutel by Vp
DeHM teqjom Pinches off 4e 1-Chaunef Heoe, 1, Loes
o drp off to 2ero but iyslead it maufrius tue Antotm
level
Whew
Vps
Vp, e
of
Paupius Coysfaut Same)
As Ahoeou i t
pss
, Cubanf i Axed at p
Tpss
DRaiuto Aouskce Cuttent wit AotE CPECUs
CounectoM ru qnte to Sousce
Ibss i waxlum daam Cusrun fe
Covdtacs VOV
aud
TFtT depmed by
Vps Ve
Piathoff
D
Sachdenprnleve
as oV
Apss
VGs-P
iucalingPANAtuL
dueto moiningchae
n-Channelfonistauu
PonCk etfVec -oy Vpr Y)
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Page No: 3
V s <0, Vpsthoe foditre, Undue.
Vee
Auesnve veltnge
of-IVM apkied
VDS OV
beueen qteaut Aoule
teytnals ealoves
v
VGs -IV
ee of Vps.
s
The efect of plied egtinbias Vas mto etnsluh
deplehon Ptagious Atuine to tose obfnnd. uitu V#Ov
btat bwee lenes of Vpe
The Pronlt ot apkying egte ps to tgne info
rerch tuu4twnti lauaf tav louney lanel of Vps M
Exupl: I4 Vp 4V,
VDs =4v
Whau
VDS= 3
hw VGe=-I V
Va0v
TPsalsy dnteatrauleuo fr Ip has Sen teskucd
ud
frct will Contiune t decSeease s Ve nmad
moke ad mpke
Megntn
Aote
to
d
Fig. b', we Aw tua lmch-off vetfage Coufiune
in a
pakabeGc mauet as Vgs becomes moku and
o e ngadie
Fmally,
ku
Vas -Vp, AntkCn ugfe vsthg unmgh
to tnbliAh aAatatrm lene tats
Muinlly o mA.
)
T e l f Ves tat tendh tap0
dsnl by Vas=Ve,
wiw Vp beng neghne
vrlta 1-chaunel devces and a
Po&it vedpge H P- chaunel THTL.
a
mA)
oCw ef Puch et vclh go
ohmic oe 3atuNatm oqRUM
DSS
Vy
Gs/V
Vas V
VGc-3V
S
lo
-chaunu
Shics
FET
wit
sa-4vVe
Ipgs 8 mi
4V.
ps (V)
Fl6
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Page No: 4
Yauife chaseacfeiAKCL
The Prelafau Ahp
betuA 4p t Ves
hockles quaon
ia
defame by
Coutro vaahle.
-
VP
Coutfa
htrasfeCuswe Cau be obtrined wtg lckueklesya equahan
04 r
Outpur chaiactaiAkC, ( Daaiw ChodtncBesteA)
)
Tpes
Gc-
VGsa-3
0
s-v
obfainna tue tvaunje Casve from GsFF)
DAamCnaRerisf
PTO
Whew
w
Ge OV
-
Ip Ipss
GS Vp 4V,
0 mA-
Gte Cutoff velge
Va
VGs)
Krsa Voltge Ves), dram cusant
Cofein
zrtef
Af
n Kus s
Ths
Ctop Vallge Gsff)
I
bedoues 2e0.
valaqe
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Page No: 5
(
Vofuge-Coufvotlel amfukt
t u ohtc
vdfnge Coufvolei *eAAtaute teqad.
L a tu kagim, TFET Cau be
eupkoyed as Vasmble ketmtt
hck hone enmtuus m
Coutrotlel by nfpiel
0e
gnte-to-Aoukcee
vdtae
As Vas becoues
Cscve beCoues
to
au
uDtL
aud uupte neqnhie tu
Alope
mete and ugte
iuteaing, taiatrute leue.
(11
A
hoi3ontal, Coklas pondua
Vas
Vp
kint kotAfauce nt Pafomse leuel of Vas
Vs
=o
P-Chaune TFET
G
P
t
Vps
M-Chonel,
Couatvucfel in kxaoty aue maune
JET stwina PaVetAnl of
P
Pol-uies of Veltg Ge f Vps
ond -
tye mateeals
ae keveAed,
p dincfron
aYeAed
Chaunel nall be reduced by eeanPoAifime vrltgey from
rdet deskae aund negatw vedfgu t
Vps
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Page No:6
Aigh luwh ot Vne t Cuwey Aadduy iMe VehclG
indjCafinq te
Thn Cau be
occsance
of bkeaktown (Pide in Cudunt ,)
aveited i Vps Vps
Liuew
- Sp-ihankesjjan
VGSOV
Skcakdoun
VGs-t
VGSt2
VGs +3
2
Vas-6V»Vp ps
P-channel TtET elsacteake witu pgcmA
und V+6V
vauysfoe Chaceishos afPChauel TFtT
Vgs
VP
Name of the Subject:
Name of the Faculty:
C Ah¢k Kuut
Topic:
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Page No: 7
Chaecfosfe Pkaunefas
e TFET
Prau Cooductnne
t a f i o of Chauge iu drau Csount A1 te Change in te
t o Kokce VeltrguAes)taCout dranto Koudrce
Vel-ge s= Couspau)
pA VGS Coustaut Vps
tVGSnt Vps - ousfan
We ha
NG
-2DSS
A+ Gs- 0,
beaus wax Valuv m
Ve
JMo
-Dss
Drain keMAfauce (ty): Tlun tu ato of Clage
d o to ouree veltge (A Vos) to mngeot draa Cun
(ATD)
Gs Cousfau.
AVps aCewana Ves A1
Alehchi
T1
t
sactée:(u):
defl m katio of Chavge of daam vetfrge (AVps
Chauge bf 7te uelge (A Vas)at Coustunf dsaw
Cabpn (I
-
Couttnnt)
Vs
Re
auun
Couf
Couut I
A, kL, m
We kaouo t n
Vps
M Gs
AVos
A
m
AI
A
Mx k
COM/ARIS[ON BETNtEN fET BTT
BTT
FtT
.FET
uipoa Keui. BTTMa bipchscseujCondicttt
Couductt device because ik device beCaywe tucuvunr Coyspta-
oentim depends upoutufbwg elemeuds u bot
majsitp
f waotity Cidiets ie eit
holes ok elacfvous st Case
Crsieky intus Case.
Mouy be
2-Thuinpatimpeiaule of FET 2.Tintiuteluce ig- BTT
is muck lasgor(intasaugeofF
uylm in CoupsuAim to
tho BTT.
Mejachm)
h easan FET.
t u t tunt feuia i-e
9te to soweCe of FET teverse
bied ich offor iderly infmk
rutane
3. FETM vdtng Coufvollkd delicq3.BTTn Cuhaent Coufreled le
4FET ls mosy. BeCase
r e raMO jCtioyS
5.+tighekrequancy hesouse
4TTin unCi mois aftT.
Vtiaion affcts
PHduauCe
G. Cqod tsual stabikty deCauwieb.
leubartse de Pondant, tednl
6 nbseuce of wiuptih, CaSwry uaway m
Cwe
H. Cosfke tuau bTT.
1- Relatuy Cheatse
P7-0
BTT
fUT
.Occues lm staceksnl|. Coupstatiuely biz.
ze.Soit io wtel iu
ICk.
1.I-Toslo.
Alo
1
oftAet vdthge, 4o i
WoK ptfu
aswitch.
1. Sunll gaan Dandwidu Prodeci
I- T,(tr_1)
lo.TheeM an alays au
iaet vrdfsebesosuijkng
.
Gtendest thauu FET
) Dto teie higk iuput upeslauce, PET% nta Couunly
wMed osinputauplusiees
Án
deices ive VdtuefeS,
OsCillo&Caes, and Ofu ueaAnq deiWices
2) TETS de ahowed in tadio fvequawcy auuplifias
M dexics
3) TE ae Mel
hixee
Gpeation o FMd TV LCer%
TETn avdtrze Coudrdled device dueto tuiz, itia mel i
oPeatioun updifo
utge Vasinble tasstets.
5) TET ta Mas ia laSqsCale inteqrahon (Ls) aud
tET DMlvataqes
IF ha elrtinely locuer 2aiuwbandiwid iu Proluc
Coupares to TT.
2ftT Peformauce degondes od qcuey
inScoses. (a
i duete t
Aeed frckty taderaalnofanc.
3vasCowduCfaue in lbuo, hance veltng
qain is lw