Unit 4022 Electronic Circuits and Devices Assignment Brief
| Unit Number | 4022 |
| Unit Title | Electronic Circuits and Devices |
| Unit Reference Number | T/651/0742 |
| Unit Level | 4 |
| Credits | 15 |
Introduction
Electronics is pervasive and impacts various aspects of modern day living and the society as a whole. Many industries rely upon the use of electronics, thereby creating opportunities in industrial applications and research.
This unit introduces students the operational characteristics of amplifier circuits, the types, and effects of feedback on a circuit performance, and the operation, application of oscillators. They will also be introduced to semiconductor devices and circuits, the use of electronics manufacturers’ data to analyse the performance of circuits and devices, the application of testing procedures, and use the findings of the tests to evaluate their operation.
Among the topics included in this unit are: power amplifiers, class A, B and AB; operational amplifiers, inverting, non- inverting, differential, summing, integrator, differentiator; types such as open, closed, positive and negative feedback; frequency, stability, frequency drift, distortion, amplitude, wave shapes and testing procedures.
On successful completion of this unit students will be able to learn about the operational characteristics of amplifier circuits, the types and effects of feedback on an amplifier’s performance, the operation and application of oscillators and application of testing procedures to electronic devices and circuits.
Learning Outcomes
By the end of this unit students will be able to:
LO1 Determine the operational characteristics of amplifier circuits
LO2 Investigate the types and effects of feedback on an amplifier’s performance
LO3 Examine the operation and application of oscillators
LO4 Apply testing procedures to electronic devices and circuits.
Essential Content
LO1 Determine the operational characteristics of amplifier circuits
Operational characteristics:
- Power amplifiers: class A, B and AB
- Operational amplifiers: inverting, non- inverting, differential, summing, integrator, differentiator, comparator, instrumentation, Schmitt trigger, active filters Gain, bandwidth, frequency response, input, and output impedance Distortion and noise.
Electronic circuits and semiconductors:
- Integrated use of semiconductors and electronic circuits; diodes and transistors, diode applications, Zener diode; operational characteristics.
LO2 Investigate the types and effects of feedback on an amplifier’s performance
Types and effects:
- Types including open, closed, positive and negative feedback
- Effect of feedback on gain, bandwidth, distortion, noise, stability, input, and output impedance
- The concept of virtual ground.
LO3 Examine the operation and application of oscillators
Operation and application:
- Types of oscillators such as Wien bridge, Twin- T, R- C ladder, L- C coupled, transistor, operational amplifier, crystal
- Frequency, stability, frequency drift, distortion, amplitude, and wave shapes.
LO4 Apply testing procedures to electronic devices and circuits
Testing procedures:
- Measuring performance, using practical results and computer simulations Voltage gain, current, bandwidth, frequency response, output power, input, and output impedance Distortion and noise.
Distortion and noise.
- Introduction of concepts, device usage and testing
- Semiconductors
- Integrated circuits
- Amplifiers
- Oscillators
- Filters
- Power supplies
- Integrated circuit (IC) voltage regulators
- Combined analogue and digital IC’s.
Component manufacturer’s data:
- Specifications, manuals, and circuit diagrams.
Use of testing equipment:
- Meters, probes, and oscilloscopes
- Signal generators and signal analysers, logic analysers
- Virtual test equipment (simulation software)
- Effective use of tools and techniques when securely operating and testing systems and components (e.g., networks and devices).
Learning Outcomes and Assessment Criteria
| Pass | Merit | Distinction |
| LO1 Determine the operational characteristics of amplifier circuits | D1 Critically review the results obtained from the application of practical and simulated tests on amplifier circuits studied. | |
| P1 Describe the types of amplifiers available using their typical circuits. P2 Determine different performance characteristics of types of operational amplifier. |
M1 Explain the results obtained from applying practical tests on an amplifier’s performance. | |
| LO2 Investigate the types and effects of feedback on an amplifier’s performance | D2 Analyse the effect of feedback on an amplifier’s performance using practical and simulated tests. | |
| P3 Investigate the effect of different types of feedback on the operational amplifier’s performance. P4 For a given practical scenario, describe how circuits employ feedback. |
M2 Perform practical tests to show the effect of feedback on an amplifier’s performance. | |
| LO3 Examine the operation and application of oscillators | D3 Analyse the results obtained from applying practical and simulated tests to oscillators studied. | |
| P5 Examine types of available oscillators and their applications. | M3 Assess the performance characteristics of different type of oscillators. | |
| LO4 Apply testing procedures to electronic devices and circuits | D4 Critically review the results obtained from applying practical and simulated tests to devices and circuits studied. | |
| P6 Show use of manufacturer’s data sheets in selecting electronic devices for a given context. P7 Apply information derived from manufacturer’s data when testing electronic devices and circuits. |
M4 Perform tests on electronic devices and circuits, recording results and recommending appropriate action. | |
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