Dr. B.R.

AMBEDKAR UNIVERSITY SRIKAKULAM

B.Sc. SECOND YEAR SYLLABUS OF ELECTRONICS
PAPERII Analog Circuits and Communications (120 hours) Marks: 100

UNIT- I (30 hours)
Power Supplies: Rectifiers Halfwave, fullwave and bridge rectifiers- Efficiency-
Ripple factor- Regulation Harmonic components in rectified output Types of
filters- Choke input (inductor) filter- Shunt capacitor filter- L section and p s e c t i on
f i l t e r s Bl oc k di a g r a m of r e g ul a t e d powe r s uppl y - S e r i e s a nd s hunt r e g ul a t e d
powe r s uppl i e s Thr e e t e r mi na l r e g ul a t or s ( 78XX a nd 79XX) Pr i nc i pl e a nd
wor ki ng of s wi t c h mode powe r s uppl y ( S MPS ) .
UNIT-II (30 hours)
RC Coupled Amplifier: Anal ys i s and f r e que nc y r e s pons e of s i ngl e and mul t i s t age RC
c oupl e d CE ampl i f i e r ( t he or y and de r i vat i on) .
Feedback: Pos i t i ve and ne gat i ve f e e dbac k- Ef f e c t of f e e dbac k on gai n, band wi dt h,
noi s e , i nput and out put i mpe danc e s .
Oscillators: Bar khaus en c ondi t i on, har t l y and c ol l i pi t s os c i l l at or s t heor y onl y. R- C
phas e s hi f t os c i l l at or , mul t i vi br at or c onc ept s .
UNIT-III (30 hours)
Operational Amplifiers: Di f f e r e nt i al ampl i f i e r - Bl oc k di agr am of I C 741 Op- Amp-
I de al c har ac t e r i s t i c s of Op- Amp- Op- Amp par ame t e r s - I nput r e s i s t anc e - Out put
r e s i s t anc e - Common mode r e j e c t i on r at i o ( CMMR) - Sl e w r at e - Of f s e t vol t age s
I nput bi as c ur r e nt - Bas i c Op- Amp c i r c ui t s - I nve r t i ng Op- Amp- Vi r t ual gr ound- Non-
i nve r t i ng Op- Amp.
Applications of Op-Amps: Summi ng ampl i f i e r - s ubt r ac t or - Vol t age f ol l owe r -
I nt e gr at or - Di f f e r e nt i at or - Compar at or - Si ne wave [ We i n Br i dge ] and s quar e wave
[ As t abl e ] ge ne r at or s - Tr i angul ar wave ge ne r at or - Sol vi ng s i mpl e s e c ond or de r
di f f e r e nt i al e quat i on. Bas i c Op- Amp s e r i e s r e gul at or and s hunt r e gul at or .
555 IC block di agr am mul t i vi br at or s .
UNIT-IV (30 hours)
Communications: Ne e d f or modul at i on- Type s of modul at i on- Ampl i t ude , Fr e que nc y
and Phas e modul at i on.
Ampl i t ude modul at i on- s i de bands - modul at i on i nde x - modul at or - De modul at i on,
( di ode de t e c t or ) .
Fr e que nc y modul at i on wor ki ng of s i mpl e f r e que nc y modul at or ( var c t or di ode
modul at or , FET r e ac t anc e modul at or ) - Rat i o de t e c t i on of FM wave s - Advant age s of
f r e que nc y modul at i on.
AM and FM r adi o r e c e i v e r s [ bl oc k di agr am appr oac h] .




Reference Books:
1. El ec t r oni c Devi c es and Ci r c ui t s - Mi l l man and Hal ki as - Tat a Mc Gr aw Hi l l ( TMH)
2. Mi c r oel ec t r oni c s - J . Mi l l man and A. Gr abel - TMH
3. Oper at i onal Ampl i f i er s and Li near I nt egr at ed Ci r c ui t s - Ramakant A. Gayakwad-
Pr ent i c e Hal l of I ndi a ( PHI ) .
4. Oper at i onal Ampl i f i er s and Li near I nt egr at ed Ci r c ui t s - K. Lal ki s hor e - Pear s on
Educ at i on
5. Anal og El ec t r oni c s - L. K. Mahes war i and M. M. S. Anand- PHI
6. Appl i ed El ec t r oni c s - R. S. Sedha- S Chand &Co
7. Pr i nc i pl es of El ec t r oni c s - V. K. Meht a and Rohi t Meht a - S Chand &Co
8. A f i r s t Cour s e i n El ec t r oni c s A. A. Khan & K. K. Dey - PHI
9. El ec t r oni c Communi c at i on Sys t ems - Geor ge Kennedy & Ber nar d Davi s - TMH.
10. El ec t r oni c Communi c at i on - D. Roddy & J . Cool en- PHI
11. Pr i nc i pl es of El ec t r oni c Communi c at i on Sys t ems Loui s E. Fr enz el - TMH


























Dr. B.R. AMBEDKAR UNIVERSITY SRIKAKULAM
B.Sc II Year Electronics PRACTICALS PAPER-II (90 hour s - 30 Ses s i ons )
Anal og Ci r c ui t s and Communi c at i ons Lab

Marks: 50
1. D. C Power s uppl y and f i l t er s .
2. Si ngl e s t age RC c oupl ed ampl i f i er f r equenc y r es pons e.
3. OP- Amp ( I C 741) as
a) I nver t i ng ampl i f i er .
b) Non- i nver t i ng ampl i f i er .
c ) Compar at or .
4. OP- Amp ( I C 741) as
a) I nt egr at or .
b) Di f f er ent i at or .
5. OP- Amp as Wi en br i dge os c i l l at or .
6. As t abl e mul t i vi br at or Det er mi nat i on of f r equenc y ( us i ng I C555 t i mer ) .
7. Monos t abl e mul t i vi br at or Det er mi nat i on of pul s e wi dt h ( us i ng I C 555 t i mer ) .
8. Vol t age r egul at or us i ng I C- 7805and I C- 7905.
9. AM modul at or and Demodul at or .
10. FM modul at or .
11. RC phas e s hi f t os c i l l at or ( us i ng I C 741 OP- AMP)
12. Si mul at i on exper i ment s us i ng appr opr i at e el ec t r oni c c i r c ui t s i mul at i on s of t war e.
a) RC c oupl ed ampl i f i er .
b) Wi en br i dge os c i l l at or .
c ) As t abl e mul t i vi br at or .
d) Ampl i t ude Modul at i on.
e) Fr equenc y Modul at i on.
Note: St udent has t o per f or m t he f ol l owi ng exper i ment s
( 1) Any 7 ex per i ment s among t he ex per i ment number s 1t o10.
( 2) Ex per i ment Number 11 ( a, b, c , d and e) i s any t hr ee c ompul s or y
STUDENTS ARE ENCOURAGED TO DO A SMALL PROJ ECT WORK DURI NG SECOND YEAR




Dr. B.R. AMBEDKAR UNIVERSITY SRIKAKULAM
(MODEL QUESTION PAPER)
B.Sc. SECOND YEAR SYLLABUS OF Electronics
PAPERII Analog Circuits and Communications
Ti me: 3 hour s Mar ks : 100

Section-A 4x15=60 mar ks
Answer all questions.
1 a) . Expl ai n t he wor ki ng of f ul l war e r ec t i f i er .
| Pss+>s| j TsY| # d $<q + \| +&
Or
b) . Expl ai n t he wor ki ng of L and .
& dH| \sY| # j TT$<q + \| +&
2 a) . Expl ai n t he f r equenc y r es pons e of R . C c ompl ed Ampl i f i er
R . C | @| | j TsYyTT bq | D skHq T $e ]+# +&
Or
b) . Expl ai n t he wor ki ng of Har t l ey os c i l l at or
V d sY | # j TT$<q + yj T+& .
3 a) . Expl ai n t he bl oc k di agr am of I C OP - Amp
I C - OP @| | j TsYu & j >yT qT $e ]+# +&
Or
b) . Expl ai n t he wor ki ng of Wei r Br i dge os c i l l at or wi t h OP - Amp
MH_&d sYqT | swq @| | sY| # j TT $< q +yj T+&.
4 a) . Wi t h neat di agr am expl ai n t he wor ki ng of A. M modul at or
A. M e &T sY| # j TT $< q +| +dVj T+ \| +&
Or
b) . Wi t h neat di agr am expl ai n t he wor ki ng of R at i o det ec t or .
# | +d Vj T+s& j &f sY| # j TT $< q +\| +&
Section-B 6x4=24 marks
Answer any SIX of the following
5. Wr i t e about t r ans i s t or s hunt vol t age r egul at or
{ HddsYj TT w +{ - z Cs> T sY>] yj T+& .
6. Compar e t he r egul at i on c har ac t er i s t i c s of c hoke i nput and c apac i t i ve i nput f i l t er s .
# =H| { , bd sYH| { | \ss> Tw Hn _\D \q T b\+&
7. Wr i t e about t he ef f ec t of negat i ve f eedbac k on gai n and band wi dt h.
> He T]j TT u+&$& (| { e T+< +) \H{ y| q ]ydq +j TT | uy \| +&
8. Ex pl ai n Bar k Haus en c ondi t i on.
usY V H+&wHqT $e ]+# +&
9. Ex pl ai n t he wor ki ng of non i nver t i ng OP Amp
$e T+ | swq Ampl i f i er | # j TT $<q +$e ]+# +&
10. How op Amp ac t as I nt egr at er Ex pl ai n?
OP- Ampl i f i er +{ > sY> m{ | # dT+<\| +&
11. Why Modul at i on i s needed?
e &Tw He d@$T{
12. Ex pl ai n t he wor ki ng of s uper Hyt r odyne Rec over ?
d | sYV{ f H]de sY | # j TT $<q +\| +&
Section-c 8x2=16 marks

Answer all questions given below
13. Dr aw t he Di agr am of Br i dge wave Rec t r f i er ?
_&y{ s| sYj TT | { ^j T+&
14. Def i ne T hr ee t er mi nal I . C. R egul at or s ?
e T&T f ]q \ I . C. s> T sYq T s +# +&
15. Def i ne pos i t i ve & Negat i ve f eed bac k?
< q e T]j TT TTD | q ]ydq \q T s +# +&
16. Def i ne Mut i vi br at or s ( Mono, As t abl e&Bi s t abl e) ?
e T*yu sY( Mono, As t abl e&Bi s t abl e) q T s +# +&
17. Def i ne C. M. R . R . & Sl ewr al t ?
C. M. R . R . & Sl ewr at e q T s +# +&
18. Def i ne out put of f s et vol t ge& i nput bi as c ur r ent ?
ne { | { | d{ yCe T]j TT H| { j d t$< TYq T s +# +&
19. Def i ne A. M. & F. M?
@+| &e &TwHe T]j TT bq | D e&T wH( A. M. & F. M) q T s +# +&
20. Dr aw t he bl oc k di agr am of R adi o T r ons oni t t er ?
s&j { H$T sYj TT u & j >yT qT yj T+&