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Lab 7

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8 views3 pages

Lab 7

Uploaded by

ikkniazi
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Lab7:Feedback Voltage

Amplifier(Series-Shunt)

Conducted on: Submitted on:


Instructor:
Lab Engineer:
Group Members
1)
2)
3)

Aim
At the end of lab student should be able to understand working of voltage amplifiers and
the benefits of voltage feedback.

Theory
1) Topic 10.4 of microelectronic circuit 6th edition by sedra smith

Components
1MΩ, 1KΩ, 10KΩ, 2KΩ, LM741

Task Breakdown
Marks
1) Calculation 2
2) Implementation 8
Explanation
1) Note down values of u (), Ri, Ro from LM741 Opamp data sheet

Figure 1: Closed loop voltage amplifier circuit

Figure 2: Simplified form of closed loop voltage amplifier circuit

Figure 3: The feedback network

2) Analyse circuit of figure 1 and calculate all quantities given in table 1


3) Construct the circuit and measure the quantities mentioned in table 1
Sr.no Quantity Calculation Measurements Percentage Tolerance

1 A

2 β

3 Af

4 Ri

5 Rif

6 fl

7 R0

8 R0f

9 fH

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