97965 - Laboratory of Electronics P-BO

Learning outcomes

This module allows students to deepen their understanding of the theory learned in the Industrial Electronics course through laboratory experiments. Specifically, students consolidate their knowledge by verifying the operation of sensor signal conditioning circuits using both CAD circuit simulation tools and measurements using basic electronic instrumentation. Students also learn to perform measurements on power conversion circuits similar to those used in industrial applications for powering and controlling machines.

Course contents

Overview of key performance indicators for analogue circuits. Specifications and classification of fundamental circuits for signal conditioning and power conversion.

Practical exercises on the LTSpice circuit simulator for various analysis types: bias-point, transient analysis, DC sweep, AC sweep, parameter sweep; result interpretation and post-processing tools for result synthesis: diagnostic files, FFTs, subcircuits, and model import.

Description of passive (resistors, capacitors, magnetics) and active (generators, switches, diodes, transistors, operational amplifiers) components used in modern circuits, their models and their scope of application, and their use in various types of possible applications.

Signals and power (adaptations). Filters for frequency behaviour and Safe Operating Area for reliability. Thermal equivalent circuit and heat sink sizing. Protection circuits. Insulation.

Understanding the operation of various circuits: Rectifiers (AC/DC), Stabilisers (DC/DC), Regulators and Linear Amplifiers, Buck/Boost Switching Regulators, and Power Supplies. LEG Switching and Feedback. Inverters (DC/AC) and Switching Amplification. Motor Drive Circuits.

 

Readings/Bibliography

Professor's handouts, lecture notes, component datasheets, and manufacturer application notes.

 

Teaching methods

Computer-assisted lectures take a detailed approach, from specific problem to a general design approach.

We begin with a theoretical basis regarding an ideal circuit designed to perform a specific task, simulate it, and verify that it performs the desired function.

We proceed by using increasingly realistic models and evaluating the trade-offs between various competing specifications. With the involvement of students, partitioned into groups, they will propose circuit improvements and adjustments to achieve the performance selected as primary for the application of interest.

We will then evaluate further possible causes of malfunction and/or failure to meet specifications in situations typical of real-world applications; along with the students, we will attempt to implement the necessary countermeasures to achieve the desired performance.

Finally, we will draw general conclusions regarding the approach to adopt for designing the circuits best suited to perform any specific functions.

Assessment methods

The exam is a practice test on LTSpice, performed in interaction with the instructor.

The test involves simulating the circuit to verify that it has been correctly implemented and interpreting the simulation results to evaluate the achievement of the required functionality.

We evaluate the ability to use the circuit simulator and the understanding of the circuit's operation through comparative analyses with variable component values and different specifications.

 

Teaching tools

The LTSpice simulator is the primary tool supporting teaching.

Appropriate navigation on manufacturers' websites for scavenging documentation on components and technologies is another valuable teaching resource.

Office hours

See the website of Rudi Paolo Paganelli