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8/14/2019 121780652-Electronics-circuits-lab-manual.pdf
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
Department of ECE Pae 1
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
CIRCUIT DIAGRAM:
CURRENT- SERIES FEEDBACK AMPLIFIER:
Without feedback:
Without feedback:
Department of ECE Pae 2
C1
0.1uF
RE
600
R1
51K
C2
0.1uFQ1
BC107A
12Vdc
RC
2.4K
R2
9K
CRO
CE
5.3uF
+
RL
4.7K
Vin= 20mVf = 20 H! 20KH
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
1. CURRENT SERIES FEEDBACK AMPLIFIER
AIM:1. To design a Current Series feedback amplifier for the following
specifications.Vcc=12 V !c=2m"V#$=%.&V hfe=2%%.2. To plot the fre'uenc( response graph for the amplifier with and without
feedback.). To calculate the following parameters with and without feedback
a* Voltage gainb* #andwidth
EQUIPMENTS REQUIRED:
$,!-$/T0"/$ ,"/T!T
-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:C5-5/$/T ,"/T!T#9T #C1%: 10esistorsCapacitors
DESIGN:
Given Specific!i"n# $e
Vcc=12 V !c=2m"V#$=%.&V hfe=2%%.
R%&e "f T'%():
!C; !$re=2&mV
re=2&1%4)
hie=hfere=2.& ?>
Department of ECE Pae )
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Q1
BC107
RC
2.4K
CRO
RE
600
0
C1
0.1uF
R1
51K
C2
0.1uF
12Vdc
R2
9K
+
RL
4.7K
Vin = 20mVf = 20H ! 20KH
147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
CURRENT- SERIES FEEDBACK AMPLIFIER:
With Feedback:
Department of ECE Pae @
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* RE:
T" fin* RC:
T" fin* )i#in+ $e#i#!"$# R1n* R,:
Current through 02A
"ppl(ing Voltage diBider rule
Department of ECE Pae
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
MODEL GRAP:
F requency Response of Current Series Feedback Amplifier
Bandwidth without feedback = f)D f2.#andwidth with feedback = f@D f1.
Department of ECE Pae &
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
b( solBing 31* E 32* we get
T" fin* CE:
Fet the smallest fre'uenc( f /00
T" fin* CC:
rin=hie=2.&?>
GCC=).2?>CC=1< 32HfGcc*
Department of ECE Pae :
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
PROCEDURE:
1. Connect the circuit as per the circuit diagram2. Set Vs= %mV using the signal generator). ?eeping the input Boltage constant Bar( the fre'uenc( from 2%67 to 2%
?67 in regular steps and note down the corresponding output Boltage.@. -lot the graphA gain 3d#* Bs. fre'uenc(.. 8ind the input and output impedances.&. Calculate the bandwidth from the graph.:. /ote the phase angle bandwidth input and output impedance.J. 0emoBe emitter resistance 30$* i.e. feedback loop and follow the same
procedure 31 to :*.
RESULT:
Thus the Current4series feedback amplifier was designed for the giBenspecifications and the fre'uenc( response graph was plotted for the circuit with andwithout feedback. The results are summari7ed as followsA4
Current SeriesIith8eedback
Iithout8eedback
#andwidthVoltage ain
Department of ECE Pae K
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
,. 2OLTAGE SUNT FEEDBACK AMPLIFIER
AIM:1. To design a Voltage Shunt feedback amplifier for the following
specifications.Vcc=12 V !c=2m"V#$=%.&V hfe=2%%.
2. To plot the fre'uenc( response graph for the amplifier with and withoutfeedback.
). To calculate the following parameters with and without feedbacka. Voltage gain
b. #andwidth
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T
-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistorsCapacitors
DESIGN:
Given Specific!i"n# $e
Vcc=12 V !c=2m"V#$=%.&V hfe=2%%.
R%&e "f T'%():
!C; !$
re=2&mV
re=2&1%4)
hie=hfere=2.& ?>
Department of ECE Pae 11
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Q1
BC107A
C1
0.1uF
CRO
R5
2.2K
1C4
0.1uF
V2
R2
9KR4
600 C3
5.3uF
R151K
C2
0.1uF
R32.4K
12Vdc
f=20H"20KH
VA#$L = 20mV
RL
4.7K
9K
+
147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
2OLTAGE-SUNT FEEDBACK AMPLIFIER:
With Feedback:
T" fin* RE:
Department of ECE Pae 12
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* RC:
T" fin* )i#in+ $e#i#!"$# R1n* R,:
Current through 02A
"ppl(ing Voltage diBider rule
MODEL GRAP:
Department of ECE Pae 1)
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
F requency Response of Voltage-shunt Feedback Amplifier
Bandwidth without feedback = f)D f2.#andwidth with feedback = f@D f1.
Department of ECE Pae 1@
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
b( solBing 31* E 32* we get
T" fin* CE:
Fet the smallest fre'uenc( f /00
T" fin* CC:
%in=&i'=2.6K(
)CC=3.2K(
CC=1* +2,f)cc-
Department of ECE Pae 1
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
TABULATION:
Iith 8eedbackAVin = 444444 V
8re'uenc( Vo Volts ain = Vo
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
PROCEDURE:
1. Connect the circuit as per the circuit diagram2. Set Vs= %mV using the signal generator). ?eeping the input Boltage constant Bar( the fre'uenc( from 2%67 to 2%
?67 in regular steps and note down the corresponding output Boltage.@. -lot the graphA gain 3d#* Bs. fre'uenc(.. 8ind the input and output impedances.&. Calculate the bandwidth from the graph.:. /ote the phase angle bandwidth input and output impedance.J. Connect the feedback resistor 30f* between the base and the collector to
form the feedback loop and follow the same procedure 31 to :*.RESULT:
Thus the Voltage4shunt feedback amplifier was designed for the giBenspecifications and the fre'uenc( response graph was plotted for the circuit with andwithout feedback. The results are summari7ed as followsA4
Voltage4shuntIith8eedback
Iithout8eedback
#andwidthVoltage ain
SERIES AND SUNT FEEDBACK AMPLIFIER
Sample viva questions:
1.
,. 3'! $e !'e *vn!+e# "f ne+!ive Fee*)c4 (p&ifie$ 5'en c"(p$e
5i!' (p&ifie$6
7. 3'! 5i&& 'ppen !" !'e Bn*5i*!'8 +in8 "%!p%! n* inp%! $e#i#!nce "f
v"&!+e #e$ie# fee*)c4 (p&ifie$ )ec%#e "f fee*)c469. Define ne+!ive fee*)c4.
/. 3'! i# !'e !pe "f fee*)c4 e(p&"e* in fee*)c4 (p&ifie$6
;. C"(p$e O#ci&&!"$ n* A(p&ifie$.
e(i!!e$ ci$c%i! 5i!'"%! B-p## cpci!"$ i# c&&e* ne+!ivec%$$en! fee*)c4 ci$c%i! 5'6
10. C%$$en! #e$ie# (p&ifie$ i# T$n#c"n*%c!nce (p&ifie$: ?%#!if6
11. 2"&!+e S'%n! (p&ifie$ i# T$n#$e#i#!nce (p&ifie$: ?%#!if6
1,. A c"(("n > c"&&ec!"$ (p&ifie$ ci$c%i! i# n e@(p&e "f 5'ic' ne+!ive
fee*)c4 ci$c%i!6CIRCUIT DIAGRAM:
Department of ECE Pae 1:
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
RC PASE SIFT OSCILLATOR:
Department of ECE Pae 1J
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
7. DESIGN OF RC PASE SIFT OSCILLATOR
AIM:1. To design and construct a 0C -hase shift oscillator for the following
specifications.Vcc = 12V !c = 2m" V#$= %.&V hfe= 2%% f = 2 ?67 C = %.%1M8
2. To plot the output sine waBeform graph for the 5scillator.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistorsCapacitors
DESIGN:
Given Specific!i"n# $e
Vcc = 12V !c = 2m" V#$= %.&V hfe= 2%% f = 2 ?67 C = %.%1M8
R%&e "f T'%():
!C; !$
re=2&mV
re=2&1%4)
hie=hfere=2.& ?>
Department of ECE Pae 1K
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
MODEL GRAP:
Department of ECE Pae 2%
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* RE:
T" fin* RC:
T" fin* )i#in+ $e#i#!"$# R1n* R,:
Current through 02A
"ppl(ing Voltage diBider rule
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
b( solBing 31* E 32* we get
T" fin* CE:
Fet the smallest fre'uenc( f /00
T" fin* CC:
rin=hie=2.&?>
GCC=).2?>
CC=1< 32HfGcc*
Department of ECE Pae 2)
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* !'e fee*)c4 cpci!"$ C:
iBen f = 2 ?67 C = %.%1M8
C = 1 < 32H f 0N&* = %.%1M8
Department of ECE Pae 2@
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
CIRCUIT DIAGRAM:
ARTLE OSCILLATOR:
Department of ECE Pae 2&
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
9. DESIGN OF ARTLE OSCILLATOR
AIM:1. To design and construct a 6artle( oscillator for the following
specifications.Vcc = 12V !c = 2m" V#$= %.&V hfe= 2%% f = 1%%?67 F1 = 1m6
2. To plot the output sine waBeform graph for the 5scillator.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistorsCapacitors
De#i+n :
Given Specific!i"n# $e
Vcc = 12V !c = 2m" V#$= %.&V hfe= 2%% f = 1%%?67 F1 = 1m6
R%&e "f T'%():
!C; !$
re=2&mV
Department of ECE Pae 2:
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
re=2&1%4)
hie=hfere=2.& ?>
MODEL GRAP:
Department of ECE Pae 2J
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* RE:
T" fin* RC:
T" fin* )i#in+ $e#i#!"$# R1n* R,:
Current through 02A
"ppl(ing Voltage diBider rule
Department of ECE Pae 2K
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
TABULATION:
Department of ECE Pae )%
A(p&i!%*e
2"&!#
Ti(e Pe$i"* T
Sec"n*#
F$e%enc f
K
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
b( solBing 31* E 32* we get
T" fin* CE:
Fet the smallest fre'uenc( f /00
T" fin* CC:
rin=hie=2.&?>
GCC=).2?>
CC=1< 32HfGcc*
Department of ECE Pae )1
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* !'e fee*)c4 cpci!"$ C:
iBen f = 1%% ?67 F1= %.1 m6 F2 = 2.@m6
Department of ECE Pae )2
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
PROCEDURE:
1. Connect the circuit as per the circuit diagram.2. Switch on the power suppl( and obserBe the output on the C05 3Sine waBe*.). /ote down the practical fre'uenc( and compare it with the theoretical
fre'uenc(.
RESULT:
Thus the 6artle( oscillator was designed for the giBen fre'uenc( and theoutput sine waBeform was plotted.
Theoretical fre'uenc( of the oscillator = 1%% ?67.-ractical fre'uenc( of the oscillator =
Department of ECE Pae ))
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C20.01uF
Cc
0.1uF
12Vdc
Q1
BC107A
Cc
0.1uF
0
0
R2
9K
C10.1uF
L
0.2mH
R1
51K
CE
5.3uF
Rc
2.4K
CRO
R4600
147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
CIRCUIT DIAGRAM:
COLPITTS OSCILLATOR:
Department of ECE Pae )@
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
/. DESIGN OF COLPITTS OSCILLATOR
AIM:1. To design and construct a Colpitts oscillator for the following
specifications.
Vcc = 12V !c = 2m" V#$= %.&V hfe= 2%% f = 1%%?67 C1 = %.1M82. To plot the output sine waBeform graph for the 5scillator.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 1
Components 0e'uiredA
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistorsCapacitors
DESIGN:
Given Specific!i"n# $e
Vcc = 12V !c = 2m" V#$= %.&V hfe= 2%% f = 1%%?67 C1 = %.1M8
R%&e "f T'%():
Department of ECE Pae )
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
!C; !$
re=2&mV
re=2&1%4)
hie=hfere=2.& ?>
TABULATION:
Department of ECE Pae )&
A(p&i!%*e
2"&!#
Ti(e Pe$i"* T
Sec"n*#
F$e%enc f
K
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* RE:
T" fin* RC:
Department of ECE Pae ):
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* )i#in+ $e#i#!"$# R1n* R,:
Current through 02 A
"ppl(ing Voltage diBider rule
MODEL GRAP:
Department of ECE Pae )J
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
b( solBing 31* E 32* we get
T" fin* CE:
Fet the smallest fre'uenc( f /00
Department of ECE Pae )K
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
T" fin* CC:
rin=hie=2.&?>
GCC=).2?>
CC=1< 32HfGcc*
T" fin* !'e fee*)c4 cpci!"$ C,:
iBen f = 1%% ?67 F = %.2m6.Fet C1= %.1Q8.
Department of ECE Pae @%
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
PROCEDURE:
1. Connect the circuit as per the circuit diagram.2. Switch on the power suppl( and obserBe the output on the C05 3Sine waBe*.). /ote down the practical fre'uenc( and compare it with the theoretical
fre'uenc(.
RESULT:
Thus the Colpitts oscillator was designed for the giBen fre'uenc( and theoutput sine waBeform was plotted.
Theoretical fre'uenc( of the oscillator = 1%% ?67.-ractical fre'uenc( of the oscillator =
Department of ECE Pae @1
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
OSCILLATORS
Sample Viva Questions:
1. Ihat t(pe of feedback is preferred in oscillatorsR
2. 6ow does oscillation start in oscillatorsR). Fist out the applications of oscillators@. Ihich oscillator is Ber( suitable for audio range applicationsR. Ihich oscillator is suitable for 08 range applicationsR&. Ihich oscillator is suitable for low fre'uenc( applicationsR:. "mplifier circuit is necessar( in an oscillator wh(RJ. Three 0C sections are used in 0C -hase Shift oscillators wh(RK. enerall( negatiBe feedback is emplo(ed in amplifiers whereas positiBe feedback is emplo(ed in oscillators wh(R1%. 8or low fre'uenc( applications we appl( 0C oscillators and not FC oscillators
wh(R
CIRCUIT DIAGRAM:
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R1
15K
C1
1uF
CRO
0.01uF
12Vdc
C3
1uFQ1
BC107
0
0.2mH
FREQ = 100KH
VA#$L = 1V
147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
;. TUNED CLASS C AMPLIFIER
AIM:
To design a Tuned Class C amplifier for the following specifications.Vcc = 12V f = 1%%?67
To plot the fre'uenc( response graph for the amplifier.To calculate the following parameters with and without feedback
Department of ECE Pae @)
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
c* Voltage gaind* #andwidth
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistorsCapacitors
PROCEDURE:
1. Connect the circuit as per the circuit diagram2. Set Vs=%mV3sa(* using the signal generator.). ?eeping the input Boltage constant Bar( the fre'uenc( from %67 to 1
67 in regular steps and note down the corresponding output Boltage.@. -lot the graphA ain3d#* Vs fre'uenc(.
MODEL GRAP:
Department of ECE Pae @@
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
TABULATION:
Vin =8re'uenc( Vo Volts ain = Vo
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
Fet us assume
The resonant fre'uenc( f
F = 1
@H231%%2*k2%.%1Q
F = %.2m6
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
Department of ECE Pae @:
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
RESULT:
Thus the Tuned Class C amplifier was designed and constructed and thefre'uenc( response was plotted in the graph. The results are summari7ed as follows A
The theoretical resonant fre'uenc( = 1%% ?67.The practical resonant fre'uenc( =The lower cut4off fre'uenc( =The upper cut4off fre'uenc( =
#andwidth of the tuned amplifier =
Sample Viva Questions:
1. Ihat do (ou mean b( tuned amplifierR2. efine Class C amplifier.). efine factor.@. Ih( factor is kept as high as possible in tuned circuitR. ention the applications of Class C tuned amplifier.
&. Ihat is meant b( loaded and unloaded of tank circuitR:. Ihat is the need for neutrali7ation in tuned amplifierR
CIRCUIT DIAGRAM:
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RB
620
Q1
BC107
RB
620
C
1.162nF
RC4.9
10Vdc
RC
4.9 C
1.162nF
Q2
BC107
147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
2. To plot the collector Boltage and base Boltage waBeform of the twotransistors.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistors
Capacitors
DESIGN:
The giBen specifications are
To find 0CA4"ppl( ?VF to collector circuit
To find resistance 01and 02A4
"ppl( ?VF to the base
MODEL GRAP:
Department of ECE Pae %
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TABULATION:
-arameters"mplitude 3V* Time 3ms*
V#2VC1V#1VC2
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147451 Electronic Circuits II & Simulation Lab II Yr / IV sem
!#should be greater than !#3min*
To find Capacitance CA4
Time Constant T for astable multiBibrator is
PROCEDURE:
1. Connect the circuit as per the circuit diagram.2. Switch on the power suppl(.). 5bserBe the waBeform both at base and collector of 1and 2.@. -lot the waBeform.
RESULT:
Thus an astable multiBibrator was designed and constructed for the giBen
specifications and its output waBeforms were obserBed.
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CIRCUIT DIAGRAM:
MONOSTABLE MULTI2IBRATOR:
=. DESIGN OF MONOSTABLE MULTI2IBRATOR
AIM:
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1. To design and construct a monostable multiBibrator for the followinggiBen specificationsA
2. To plot the collector Boltage and base Boltage waBeform of the two
transistors.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistors
Capacitors
DESIGN:
The giBen specifications are
8or stable state assume transistor 1is 588 and 2is 5/.
.ue to s(mmetr( 0c2= 0c1=0c
=1%M"Select
hence take !#2 = 2. !#2 3min*
Time Constant
MODEL GRAP:
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"s
Ihen 1 is 588 Fet us take
% = 4201 + %.202
01+ 02 01+ 02
4201+ %.202=% %.202= 201 02= 201< %.2
"ssume 01= 1%k> 02= 1%%k>
"ssume CommutatiBe capacitor C1= 1%%p8.
PROCEDURE:
1. Connect the circuit as per the circuit diagram.2. Switch on the power suppl( and obserBe the output waBeform at the collector
of 1and 2.). Sketch the waBeform.@. Trigger the monostable multiBibrator with a pulse and obserBe the change in
waBeform.. Sketch the waBeform and obserBe the changes before and after triggering the
input to the circuit.
RESULT:
Thus the monostable multiBibrator was designed and constructed for the giBenspecifications and its output waBeforms were obserBed.
CIRCUIT DIAGRAM:
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BISTABLE MULTI2IBRATOR
. DESIGN OF BISTABLE MULTI2IBRATOR
AIM:
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1. To design and construct a monostable multiBibrator for the followinggiBen specificationsA
). To plot the collector Boltage and base Boltage waBeform of the two
transistors.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T#9T #C1%: 10esistors
Capacitors
DESIGN:
The giBen specifications are
"ssume 1is at cut4off and 2is at saturation.
1is at cut4off so V#1should be at negatiBe potential.
"ssume 01= 1%?
MODEL GRAP:
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-arameters"mplitude 3V* Time 3ms*
V#2VC1
V#1VC2
Trigger!nput
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PROCEDURE:
1. Connect the circuit as per the circuit diagram.2. Switch on the power suppl( and obserBe the output waBeform at the collector
of 1and 2.). Sketch the waBeform.@. "ppl( a threshold Boltage VT3pulse Boltage* and obserBe the change of states
1and 2.. Sketch the waBeform.
RESULT:
Thus the monostable multiBibrator was designed and constructed for the giBenspecifications and its output waBeforms were obserBed.
MULTI2IBRATORS
Sample Viva Questions:
1. Ihat is the multiBibratorR2. Fist the applications of monostable multiBibrator.). Ihich mutiBibrator would function as a time dela( unitR Ih(R
@. 6ow a Schmitt trigger is different from a multiBibratorR. ention the applications of astable multiBibrator.&. efine commutating capacitor.:. Ihat are the other names for bistable multiBibratorRJ. Ihich multiBibrator would be useful for each of the following purposeR
a. time4dela( unitb. memor( deBicec. fre'uenc( diBisiond. adWustable pulse width generatore. reference clock to s(nchroni7e timings in digital s(stems.
CIRCUIT DIAGRAM:
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1. To design a high pass 0C circuit and obserBe its response for the giBens'uare waBeform for TXX0C T=0C and TUU0C.
2. To design a low pass 0C circuit and obserBe its response for the giBens'uare waBeform for TXX0C T=0C and TUU0C.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!TC05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T
0esistorsCapacitors
PROCEDURE:
Time constant of the circuit 0C= %.%1KJ ms
1. "ppl( a s'uare waBe of 2B p4p amplitude as input.
2. "dWust the time period of the waBeform so that TUU0C T=0CTXX0C and
obserBe the output in each case.
).raw the input and output waBe forms for different cases.
MODEL GRAP:
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LO3 PASS RC CIRCUIT:
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RESULT:Thus the integrator and differentiator circuits are designed and their output
response for Barious time constants are obtained
CIRCUIT DIAGRAM:
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CLIPPERS:
11. CLIPPERS AND CLAMPERS
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AIM:
To obtain the output response for Barious non linear waBe shaping circuitsD Clippers and Clampers.
EQUIPMENTS REQUIRED:
$,!-$/T 0"/$ ,"/T!T-ower suppl( 3%4)%*V 1C05 3%42%*67 18unction generator 3%41*67 1
COMPONENTS REQUIRED:
C5-5/$/T 0"/$ ,"/T!T!5$ !/@%%1 1
0esistorsCapacitors
TEOR:
CLIPPERS:
The basic action of a clipper circuit is to remoBe certain portions of thewaBeform aboBe or below certain leBels as per the re'uirements. Thus the circuitswhich are used to clip off unwanted portion of the waBeform without distorting theremaining part of the waBeform are called clipper circuits or Clippers. The half waBe
rectifier is the best and simplest t(pe of clipper circuit which clips off thepositiBe
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-ositiBe peak clamped at negatiBe reference leBelA
DESIGN:
CLAMPER :
8or proper clamping U1%%T
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where T is the time period of input waBeform!f fre'uenc( is 1 k67 with peak4peak input Boltage of 1%V T=1ms
= 0F.C=1%%T = 1%%ms Fet C=1Qf
0F= 1%%?
Select C =1Q8 and 0F=1%% k>
TEORETICAL CALCULATIONS:
P"#i!ive pe4 c&ippe$:
Vr=2B VY=%.&BIhen the diode is forward biased Vo =Vr+ VY =2B+%.&B = 2.&BIhen the diode is reBerse biased the Vo=Vi
P"#i!ive )#e c&ippe$:
Vr=2B VY=%.&BIhen the diode is forward biased Vo=Vr DVY = 2B4%.&B = 1.@BIhen the diode is reBerse biased Vo=Vi.Ne+!ive )#e c&ippe$:
Vr=2B VY=%.&BIhen the diode is forward biased Vo = 4Vr+ VY = 42B+%.&B = 41.@BIhen the diode is reBerse biased Vo=Vi.
Ne+!ive pe4 c&ippe$:Vr=2B VY=%.&BIhen the diode is forward biased Vo= 43Vr+ VY* = 432+%.&*B =42.&BIhen the diode is reBerse biased Vo=Vi .
PROCEDURE:1. Connect the circuit as per circuit diagram shown in 8ig.12. 5btain a sine waBe of constant amplitude J V p4p from function generator and
appl( as input to the circuit.).5bserBe the output waBeform and note down the amplitude at which clipping occurs@. raw the obserBed output waBeforms.
MODEL GRAP:
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/egatiBe peak clamped at positiBe reference leBelA
-ositiBe peak clamped at negatiBe reference leBelA
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RESULT:
Thus the performance of Barious clipping and clamping circuits wereobserBed.
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CIRCUIT DIAGRAM:
CMOS IN2ERTER:
0
# 2
# / % '
V
V 2
= 0
F = 0
$ = 0 . 5 m
$ E R = 1 m
V 1 = 5 V
R = 0
V 2 = 0 V
V 1
0 V d
0
0
# 1
# / % ' $
CMOS NAND +!e:
Department of ECE Pae ::
0
# 5
# / % '
0
V 3 = 0
F = 0
$ = 0 . 5 m
$ E R = 1 m
V 1 = 5 V
R = 0
V 2 = 0 V
# 4
# / % ' $
# 6
# / % '
0
0
V 1 = 0
F = 0
$ = 0 . 5 m
$ E R = 1 m
V 1 = 5 V
R = 0
V 2 = 0
V 25 V d c
V
# 3
# / % '
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CMOS NOR +!e:
V 2
= 0
F = 0
$ = 0 . 5 m
$ E R = 1 m
V 1 = 0
R = 0
V 2 = 0
V 4
5 d c
V 3
= 0
F = 0
$ = 0 . 5 m
$ E R = 1 m
V 1 = 5
R = 0
V 2 = 0
0
# 2
# / % '
0
# 1
# / % '
0
V
# 5
# / % '
0
V
# 3
# / % '
V
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RESULT:
Thus the C5S inBerter /"/ and /50 circuits were simulated and outputwaBeforms are
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CMOS inve$!e$
C5S /"/
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C5S /50 "T$
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CIRCUIT DIAGRAM:
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1;. SIMULATION OF DIFFERENTIAL AMPLIFIER
AIM:To simulate the differential amplifier circuit and obtain the output waBeform
using -S-!C$.
SOFT3ARE REQUIRED:
-S-!C$ 5rcad famil( release K.2.
PROCEDURE:1. o to start5rcadcapture/ew proWect.2. Create a blank proWect then draw the circuit b( taking appropriate
components and simulate the diagram.). 5bserBe the output waBeforms.
RESULT:Thus the simulation of differential amplifier was done using -S-!C$.
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CIRCUIT DIAGRAM:
2
u A 7 4 1
3
2
7
4
6
1
58
"
V
8
V
"
: 1
: 2V
V 2
A C = 0
R A = 0
C = 0
5
1 5
R 3
1
0
R 1
4
3
A C = 0
R A = 0
C = 5
0
0
V
V 1
A C = 0
R A = 0
C = 0
0
V 4
1 5
R 4
1
V
0
R 2
2
V
0
TABULATION :
b % b1 b2 TheoriticalValue
-racticalValue
igital to analog
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RESULT:Thus the simulation of digital to analog conBerter was done using -S-!C$.
CIRCUIT DIAGRAM:
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1=. DESIGN AND SIMULATION OF II ORDER LO3-PASS
BUTTER3ORT FILTER
AIM:
1. To design a second order #utterworth low4pass filter for the followinggiBen specifications
2. ,se -S-!C$ to plot the fre'uenc( response of the output Boltage of thefilter designed from 1%67 to 1% ?67.
SOFT3ARE REQUIRED:
-S-!C$ 5rcad famil( release K.2.
DESIGN:
" second order filter e\hibits a stop band roll off of 4@% d#
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the sallen4ke( circuit giBes to achieBe a #utterworth response withsallen ke( topolog(. Therefore we must reduce the gain b( 1
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PROCEDURE:
1. o to start ] all ] programs ] capture.2. Select file in the menu bar ] new proWect.). Choose location CA programfiles
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RESULT:
Thus the #utterworth low pass filter of second order was designed andsimulated using -S-!C$.
CIRCUIT DIAGRAM:
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Ca+ Cb = C2
Then Ca< 3Ca+Cb* = 1
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K. 8or a long time constant 0C high pass circuit with a s(mmetrical s'uare waBe
input find the tilt.
1%. !ntegrators are preferred oBer the differentiators. Ih(R
11. Ih( 0C circuits are commonl( used as compared to 0F circuitsR
12. Ih( does comparator differ from clipperR
1). Ihat is drawback of haBing diode as series element in clipperR
1@. Ihat is drawback of haBing diode as shunt element in clipperR
1. Ihat is the difference between regeneratiBe and non4regeneratiBe comparator.
1&. Ihat is difference between output from clipping and clamping circuitR
1:. efine an ideal differential amplifier.
1J. efine common4mode reWection ratio.
CIRCUIT DIAGRAM
R 61 0 K
R 2
9 1 . 6 7 K
0
0
C 1
1 0 0 $ F
0
Q 2
B C 1
0
0
R 3
1 0 K
V 2
= 0
F = 0
$ = 0 . 5 # :
$ E R = 1 m
V 1 = 1 2 V
R = 0
V 2 = " 1 2
V
C 2
1 0 0 $ F
V
V 1
= 0
F = 0
$ = 0 . 5 # :
$ E R = 1 m
V 1 = 1 2 V
R = 0
V 2 = " 1 2
R 4
5 . 9 K
V
R 19 1 . 6 7 K
V
V 3
1 2 V C
Q 1
B C 1 0 7 A
R 5
5 . 9 K
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,0. SIMULATION OF BISTABLE MULTI2IBRATOR
AIM:
To simulate the bistable multiBibrator circuit and obtain the output waBeformusing -S-!C$.
SOFT3ARE REQUIRED:
-S-!C$ 5rcad famil( release K.2.
PROCEDURE:1. o to start5rcadcapture/ew proWect.2. Create a blank proWect then draw the circuit b( taking appropriate
components and simulate the diagram.). 5bserBe the output waBeforms.
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RESULT:
Thus the bistable multiBibrator was designed and simulated using -S-!C$.
CIRCUIT DIAGRAM:
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,1.SIMULATION OF ASTABLE MULTI2IBRATOR
AIM:
To simulate the astable multiBibrator circuit and obtain the output waBeformusing -S-!C$.
SOFT3ARE REQUIRED:
-S-!C$ 5rcad famil( release K.2.
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PROCEDURE:1. o to start5rcadcapture/ew proWect.2. Create a blank proWect then draw the circuit b( taking appropriate
components and simulate the diagram.). 5bserBe the output waBeforms.
MODEL GRAP:
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RESULT:
Thus the astable multiBibrator was designed and simulated using -S-!C$.
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CIRCUIT DIAGRAM
,,. SIMULATION OF MONOSTABLE MULTI2IBRATOR
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AIM:
To simulate the monostable multiBibrator circuit and obtain the outputwaBeform using -S-!C$.
SOFT3ARE REQUIRED:
-S-!C$ 5rcad famil( release K.2.
PROCEDURE:1. o to start5rcadcapture/ew proWect.2. Create a blank proWect then draw the circuit b( taking appropriate
components and simulate the diagram.). 5bserBe the output waBeforms.
MODEL GRAP:
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RESULT:
Thus the monostable multiBibrator was designed and simulated using -S-!C$.
SPECIFICATIONS:
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BC 10< > NPN GENERAL PURPOSE TRANSISTOR
FEATURES:
4 Fow Current 3ma\. 1%%m"*
4 Fow Voltage 3ma\. @ V*
8or !C= 2m" VC$= V
hfe3min* = 11%hfe3ma\* = @%Vbe3min* = %mVVbe3t(p* = &2%mVVbe3ma\* = :%%mV
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