Download Biasing Analysis of NPN and PNP Transistors using PSpice Lite - Prof. Marc E. Herniter and more Assignments Electrical and Electronics Engineering in PDF only on Docsity! Problem 1
iso
, Ne= Nae + Vag = Vee + TaRn @
YWvg (@ wo (1)
Nec - Vee-Tarn ~ (P+!) Fa
Re
Salue For Tp
Ze = Nee -Nee
Re + (+8) Re
Since oe = BTa
Tes B(Vec- ve)
i Ra + (i+) Re
b) foc (e+) Re >> Re
and Bo>\
The CKT will oe indePendent of
B
ed
Since Ra isnot <é A+B) the
Crrewie Will be dependent evr RB
Semin = Bans (Vee Vee) _ So(i5-0.3)
Tce ere
Ret (4 Ban)Re — 2)S000 + (Si\lFP00)
= lOm4
Zemay = Bmax (vec -Vae) _ 350 isv-o.av)
- Sey
Re + (b+ Bmax)Re SOO + (351) TPon
ISemA
\l
> Ic is a Little dependent on B
Problen 2
make Q thevenin eg ovr a ReaRe e Vee
Ray = RRL @s7Klisk = \oiex
Nags We Re _ sul sk = 1 42y
Rae LvSk4+9,89K
Nee
Re =a 2
+ | Low.k
|.dw
2 [ Re =330
\f
Frew Norte %
te B) va Vee \
Rant (4p) Re
For B= 350
Lez 3So ( F- 0.90)
——————__ = Sos
LovaK + (350) (3200)
Nee 2
CE Ne = Sey (Re+Re) = ISY— 2.07malo
= 423v
=D may + Swng s i 6AN
200A +3300)
Nee P Na — Te (Reate)
=~) — 2,43my (aaktie) = F.44U
for B= $50
I, _ B(Vtn—V ae - 350 (4 rou _ 0,3~ J
Rent Lite \R¢
F.open+ (351) (10002)
= SZ 4rd
Vig= Nee ~ k& {Re+Re)
= \ev ~ Same (22k ak) = tNY
5 5 4 4 3 3 2 2 1 1 D D C C B B A A 2.942V 11.66V 0 + - V1 DC = 18 Model = Qx NPN BF=50 Qx Q1 2.884mA + R1 33k + R2 10k + R3 2.2k + R4 1k C:\WEBSITE\ROSE_CLASSES\ECE250\Homework\Spring_2004\HW6\problem 3-30-SCHEMATIC1-Bias.out.1 05/03/04 11:16:24 **** 05/03/04 11:15:39 ************** PSpice Lite (Mar 2000) ***************** ** Profile: "SCHEMATIC1-Bias" [ C:\WEBSITE\ROSE_CLASSES\ECE250\Homework\Spring_2004\HW6\problem 3-30-schematic1-bias.sim ] **** OPERATING POINT INFORMATION TEMPERATURE = 27.000 DEG C ****************************************************************************** **** BIPOLAR JUNCTION TRANSISTORS NAME Q_Q1 MODEL Qx IB 5.77E-05 IC 2.88E-03 VBE 8.02E-01 VBC -7.91E+00 VCE 8.71E+00 BETADC 5.00E+01 GM 1.12E-01 RPI 4.48E+02 RX 0.00E+00 RO 1.00E+12 CBE 0.00E+00 CBC 0.00E+00 CJS 0.00E+00 BETAAC 5.00E+01 CBX/CBX2 0.00E+00 FT/FT2 1.77E+18 JOB CONCLUDED TOTAL JOB TIME .05 Page: 1
reat mate 4 Thevenin owe lent OvX oF.
Nice, Xa, And Ry
Veg =10
+e Re Tczr $*S
Ray verve %
5 Vee. oon
Vee
Va = Ve - se Re - Veg Ana tester dy = (Ro) Fa,
So Ne = Na -Neg- (Qt\FQR-
_ Nery Tees Va- Van _ | dee Veg =) Tah, ve. aN
Raw } . Ray
REAL milion aan opment eel
Go\we Fx Te
\) ct- Nan- Nee
Ran * (\«8)Re
tw
% (ec ~ Vw, New)
= Mv
é WER =Oy
% $e = pear pc Wot
(®) ‘c
FR
-~ ee *
“ De ke
Ver Nae E
Vez O _.
-~ J - Ne- ER
. J. -Ue
SO
-s_| 92 35
on 3.4 AS
sO
Vea
VNu- te*e- Ve
ton
Vea =
eet
Fyn
Gd, Zant 4.8 <
ey Tae | A. 8T re
4 | SeliN _
Te 5
VE SA ew
UL SN
Ja, \
7
s,\N
< VY
Nec |s,
5 5 4 4 3 3 2 2 1 1 D D C C B B A A 4.991V 5.802V 0 + - V1 DC = 10 Model = Qp PNP BF=50 + R1 20k + R2 15k + R3 1k Qp Q2-82.31uA 4.198mA C:\WEBSITE\ROSE_CLASSES\ECE250\Homework\Spring_2004\HW6\problem 3-32-SCHEMATIC1-Bias.out.1 05/03/04 14:19:37 **** 05/03/04 14:18:30 ************** PSpice Lite (Mar 2000) ***************** ** Profile: "SCHEMATIC1-Bias" [ C:\WEBSITE\ROSE_CLASSES\ECE250\Homework\Spri **** OPERATING POINT INFORMATION TEMPERATURE = 27.000 DEG C ****************************************************************************** **** BIPOLAR JUNCTION TRANSISTORS NAME Q_Q2 MODEL Qp IB -1.36E-05 IC -4.77E-03 VBE -8.15E-01 VBC 4.40E+00 VCE -5.22E+00 BETADC 3.50E+02 GM 1.84E-01 RPI 1.90E+03 RX 0.00E+00 RO 1.00E+12 CBE 0.00E+00 CBC 0.00E+00 CJS 0.00E+00 BETAAC 3.50E+02 CBX/CBX2 0.00E+00 FT/FT2 2.93E+18 JOB CONCLUDED TOTAL JOB TIME .11 Page: 1 P coblewn 3.52
a
for O
Dov
Re
) —
“iL
2
Ri, = Sookl| sook aoe = S4.7K
qok Fok ||S00k Sook
Vane Vo= Sv
- So0l+ Swiw Gor lisoor) .
= 1.4
+ lov
\ 4 SV
Fo k. Il 500%
50k + cake) \
@
VUSW§ ~he - tWevensn egurwalen* ana sherxed
No VV GO, Use Nave —~\hke Crccorv
ALON
Re- sok
® (v.—Vee) _ 00 (1azy - 0.79)
Tes
Oe S43 + (10v)( Scoo)
Ran + (ue) Re
= 297 mh
alsok + SKY
Neeo = Nee- 4ehhire) = Qov- LEM
= FN
») QO is san Wren Nae Vee Ve = Wah
Wwe Wave ‘tre C\Cous
Nacesv Nic =Sw
2K Ry Re
Vs Vo = \hesqt =0,20
—D —» Ow
Vu ~~? te
Tu +
Re 3
—WwW
ZX, = Neg-l-2vd O ~(~ |
| ao Fe Cw) AW 2 gsun
—
—
Ro, Qok 2oK
is deeply
Barware A
5 5 4 4 3 3 2 2 1 1 D D C C B B A A 0 0 Vo 0 0 Model = Qx NPN BF=50 + R1 2000 + RC 2000 + - Vcc DC = 5 Dbreak D1 + - V2 DC = 2 Qx Q1Dbreak D2 + R2 20k + - Vin DC = 0