Scenario:
You work as a technician engineer working for an electrical/electronic component manufacturer. A particular batch of electronic components had to be called back due to circuit malfunction. You have been tasked by your manager to produce a report on fault analysis of components after experimental analysis that can aid in troubleshooting.
Task 1:
Plot behavior characteristics of a:
- p-n junction diode,
- Zener diode and
- LED
For all the above, plot their behavior using the values from the practical/simulation performed.
- Explain the operation and behavior of each diode with reference to semiconductor theory and suggest suitable applications for each.
Task 2:
Analyze the performance of the above-mentioned diodes and their importance while designing circuits based on:
- Its breakdown voltage
- Forward voltage
- Max Forward Current
- PIV
- Operating Junction temperature
- Power Dissipation
- Frequency
Task 3:
- Design and sketch an op amp circuit that will provide an output of 4 V when an input of -0.25 V is applied to its input.
- An op amp has a common mode gain of 3.6 and a CMMR of 100 dB.
(i) Calculate the differential voltage gain.
(ii) If the common mode gain was 3.6 and the differential voltage gain (Ad) was 2.0 x 105, calculate the CMMR.
- List at least 4 op- amp characteristics and explain their importance while designing an audio circuit.
Task 4:
Generate K-map for
- f (p,q,r,s) = ∑(0,3,4,5,7,8,9,12,15)
- f (p,q,r,s) = ∑(0, 5,7,8,9, 12,14,15)
Implement the reduced expression from k-Map using logic gates and explain its operation.
Task 5:
Data storage techniques have evolved in recent decades. Explain the difference between digital and analogue storage techniques. What are the benefits of each technique and list 3 examples of each.
Evaluate the most relevant type of circuit applicable (analogue/ digital) for the following applications:
- audio video application
- a memory stick
