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Solution for Integrated Circuits - BRAINHEATERS · Solution for Integrated Circuits May 2016 Index...
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Solution for Integrated Circuits
May 2016
Index
Q.1)
a) …………………………………………………………………………. 2
b) …………………………………………………………………………. 2-3
c) …………………………………………………………………………. 3
d) …………………………………………………………………………. 3-4
e) …………………………………………………………………………. 4-5
f) …………………………………………………………………………. 5-6
Q.2)
a) …………………………………………………………………………. 6-8
b) …………………………………………………………………………. 8-10
Q.3)
a) …………………………………………………………………………. 10- 12
b) …………………………………………………………………………. 13 -17
Q.4)
a) …………………………………………………………………………. 17-18
b) …………………………………………………………………………. 18-20
c) …………………………………………………………………………. 20
Q.5)
a) …………………………………………………………………………. 21-22
b) …………………………………………………………………………. 23- 27
Q.6)
a) …………………………………………………………………………. 27 -28
b) …………………………………………………………………………. 29-30
c) …………………………………………………………………………. 31-33
d) …………………………………………………………………………. 34- 36
e) …………………………………………………………………………. 36 -38
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Q1) Attempt Any Four (20)
(a) Compare open loop and closed loop configuration of operational amplifier.
Ans :-
(b) Draw the diagram of a floating load voltage to current converter and derive the
expression for the output current .
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-
(c) Differentiate between inverting and non-inverting comparators.
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Ans :-
(d) Explain the functional block diagram of timer 55
Ans :-
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(e) Explain current fold –back protection in voltage regulators.
Ans :-
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(f) Draw the waveforms for the outputs of IC 7490 with respect to the clock when it is
used as a bi-quinary decade counter.
Ans :-
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Q2) (a) Draw the circuit diagram for an instrumentation amplifier using three op-amps and derive
the expression for its gain. Explain how the gain can be varied.
Ans :-
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(b) Draw a neat diagram of a Wien bridge oscillator using op-amp .Derive its frequency
of oscillation .What are the values of R and C if its frequency of oscillation =1kHz?
(10)
Ans :-
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Q3)
(a) With the help of a neat diagram and voltage transfer characteristics explain the
working of a non-inverting Schmitt trigger .Derive the expression for the threshold
levels and explain how can be varied.
Ans :-
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(b) Draw the circuit diagram for a square and triangular waveform generator using operation
amplifiers. With the help of waveform at suitable points in the circuit explain its working
.Explain how the duty cycle can be varied.
Ans :- Square Wave Generator (Astable Multvibrator) :-
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Triangular Wave Generator :-
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Q4)
(a) Design a voltage regulator using IC 723 to give output voltage of 15 V and output
current of 1.5 A.
Ans :- Note
Same Sum :-
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(b) With the help of a neat diagram explain how IC LM 317 can be used as a variable
voltage regulator.
Ans :-
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(c) Differentiate between linear regulator and switching regulator.
Ans :-
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Q5)
(a) Draw the diagram for an Astable Multivibrator using timer 555.Design the same for
a frequency of 5KHz with duty cycle 70% .Draw the waveforms across the charging
capacitor and at the output.
Ans :-
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Note : similar sum
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(b) With the help of a neat circuit diagram the working of universal shift register IC
74194 as a bit ,4 state counter with single circulating ‘zero’.7417
Ans :- 74194 : Bit Bi-directional Universal Shift Register
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Q6)
(a) Frequency to voltage converter .
Ans :- Frequency to Voltage (F _ V) Convertor
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(b) Waveform generator XR 2206.
Ans :-
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(c) Voltage controlled oscillator 566.
Ans :-
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(d) Synchronous counter 74163.
Ans :- IC 74163 synchronous Binary up Counterv
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(e) Arithmetic logic unit 74181.
Ans :- Arithmetic Logic Unit (ALU)
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