ELECTRONICS III
| Subject Code: | EEN1046 |
| Objective: | To introduce the design and analysis of analog circuits using operational amplifiers. |
| Pre-Requisite: | EEN1026: Electronics
II |
| Credit Hours: | 3 |
| Contact Hours: | 56 hours (lectures,tutorials & laboratory experiments) |
| Assessment: | Lab: 10% Tutorial: 15% Test/Quiz: 15% Final Examination: 60% |
| Laboratory: | 1.
Operational Amplifier Circuits and Their Typical
Applications 2. Voltage Regulators 3. Oscillator Circuits |
| Details of Assignment | Example: Title:Design based on the op-amp circuits using Pspice simulation to study the op-amp characteristics and many types of the filter design simulation. Objectives: To study the characteristic of the basic op-amp circuit using pspice simulationTo design and simulate the few types of the filters such as high pass filter, low pass filter, etc using pspice simulation. Type: Software Simulation / Program design and implementation Description: This assignment contains 2 questions based on the op-amp circuits. Students will learn theoretically about circuit design, simulation and analysis. A tutorial on PSpice is provided for students to learn to use some of the functions of the software simulation tool. This assignment intends to provide opportunity for students to learn the basic skills in circuit design, simulation and analysis, thus building up of the skills is highly dependent on students’ efforts. Guidelines are given along with the assignment questions. Students are advised to understand the way of design, the chosen conditions/considerations, the way of analysis, the information gained from the analysis, etc. |
| References: |
|
Ideal Op-Amp, Virtual Ground Concept, Basic Op-Amp Circuits, Op-Amp applications: current-to-voltage converters, voltage-to-current converters, Difference amplifier, Instrumentation amplifier, integrator, differentiator.
Biquadratic Transfer Functions, Filter types, Standard Responses, Sallen-Key Networks, Frequency and Impedance Scaling, Gain Adjustments, Frequency Transformations, State-variable configurations, High-Order filters.
Simplified circuit diagram of op-amp input stage, input bias and offset current, input offset voltage, voltage drift, power supply rejection ratio, common-mode rejection ratio, offset error compensation, frequency response, transient response, slew rate, input and output impedances, noise, stability, gain and phase margins, frequency compensation, small and large signal characteristic.
Basic emitter-follower regulators, Regulation, Series feedback regulators, Current limiter, over-voltage protection, linear IC voltage regulators, Simple heat sink design.
General principles of oscillation, Barkhausen Criterion, Phase-Shift Oscillator, Wien-Bridge Oscillator, LC Oscillators, Crystal Oscillators, Square-wave generator, Triangle-wave generator, sawtooth generator.
Comparators, Schmitt Triggers, Precision Rectifiers, Peak Detectors, Log/Antilog Amplifiers, Analog Multipliers
Learning
Outcome of Subject
At the completion of the subject, students should be able to :
- Design and analyse simple Op-Amp circuits for applications.
- elaborate the transfer functions, types and standard responses of filters
- design and analyze Butterworth active filters using Op-Amp
- describe the characteristics and limitations of practical Op-Amp and apply compensating and offset nulling networks
- design and analyze transistorised voltage regulators, over-current and over-voltage protection circuits, over-temperature protection with fold-back current limiting circuit and heat sink, and linear IC voltage regulators
- explain the principles of sinusoidal oscillation with its oscillation criterion
- design and analyze the phase-shift, Wein-Bridge, LC and crystal sinusoidal oscillators.
- design and analyze square-wave, triangular-wave and saw-tooth generators using Op-Amp
- design and analyze nonlinear circuits such as comparators, Schmitt trigger, precision rectifiers, peak detectors, Log/Antilog amplifiers, analog multipliers and related application circuits
- design and construct basic Op-Amp circuits for their typical applications, transistorised voltage regulator with constant or fold-back current limiting and phase-shift oscillator using Op-Amp
Programme Outcomes (% of contribution)
- Ability to acquire and apply fundamental principles of science and engineering.- 50%
- Capability to communicate effectively.-10%
- Acquisition of technical competence in specialized areas of engineering discipline.- 10%
- Ability to identify, formulate and model problems and find engineering solutions based on a system approach.- 10%
- Understanding of the importance of sustainability and cost-effectiveness in design and development of engineering solutions. - 10%
- Ability to work independently as well as with others in a team.- 10%