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Test Paper - Electronic Devices and Circuits -II - Mumbai University - Engineering in Electronics and Telecommunication - 4th Semster-2007, Study notes of Analysis and Design of Digital Integrated Circuits
Mumbai University ,Electronic Devices and Circuits - II ,Bachelor of Engineering in Electronics and Telecommunication,2007,4th Semester,transformer coupled class B push pull amplifier, upper cutoff frequency, BiFET,BiMOS differential amplifier circuits, Ideal characteristics of any voltage amplifier, Regenerative comparator using Op-Amp., Crystal oscillator ,Heat sink, ,Op-Amp as integrator
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Download Test Paper - Electronic Devices and Circuits -II - Mumbai University - Engineering in Electronics and Telecommunication - 4th Semster-2007 and more Study notes Analysis and Design of Digital Integrated Circuits in PDF only on Docsity!
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N.S.: (1) Question No:1 is compulsory. ,
, (2) Solve any four questions from remaining. (3) Assume suitable additional data wh,enever necessary.
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[Total Marks: 100
1. Design a two stage R-C coupled CE amplifier using transistor type BC 147 A to meet following 20
specifications.
Av ~ 8000; Sico ~ 10; FL~ 30 Hz: Vo =2.5 V
Assume suitable Vcc. Calculate Av, Ri of the designed amplifier.
2. (a) A transformer coupled class A amplifier drives 8 Q through 4:1 transformer. 10
Vcc = 35 V and output poer is 2 Watt.
Determine: 1. P(a.c.) 2. VL (a. c.)
- RMS value of load and primary current. (b) Explain with diagram working of transformer coupled class B push pull amplifier.
- V a.c. transformer primary
10
- (^) (a) Determine the frequency of oscillator in the following figure. Assume negligible loading 10 on the feedback circuit. Q is greater than 10. Find the frequency if the oscillator loaded to point where Q drops to 4. tI'lY
t-- \lout
L ':. c;-o'm H
c., :- 0" ~ c
C 2...;- O. 01 .lJ P.
(b) Draw the diagram of wein bridge oscillator. Derive the expression for resonant frequency. 10
- (^) (a) Draw the equivalent Gircuitof FET amplifier at high frequency. Derive, the' expression. for 10 upper cutoff frequency.' (b) Explain different methods of improve CMRR of differential amplifier. 10
- (^) (a) Drawthe circuit diagram and derive expression for the gain of three Op-Amp. instrumentation 10
'amplifier..
(b) Explain with block diagram different topologies of negative feedback amplifier. What is 10
the improvementin the Avand Ai?.
- (^) (a) Draw BiFET,BiMOS differential amplifier circuits. State application for each. 10
(b). Deriverelation for maximumfrequency at which Op-Ampmay operate. For the following 10
circuit, calculate maximumfrequency that can be used. Slew rate = 0.6 V/JJ.S
Vj::.O'02..V lOK --.f\N\t cu z .;oo~, 03 ,f;A. 4 1.
2.11 0 k..t1..
Vo
- (^) Write short note on :
(a) Ideal characteristics of any voltage amplifier (b) Regenerative comparator using Op-Amp. (c) Crystal socillator. (d) Heat sink. (e) Op-Amp as integrator.
20