Abstract:

The teaching of engineering is based on the practical experimentation of the effects of physical and mathematical theories about the material world. In any engineering modality, whether Computing, Electrical, Mechanical, or Civil, the mathematical modeling of a problem will allow us to understand the characteristics and variables that influence a situation, but only their practical application will make it possible to observe the influence of real world factors on a given solution.

The design of new teaching and learning methodologies implies the development or definition of new tools that allow, in addition to the acquisition of knowledge, the promotion of perception about the relationship of effects and their application to the material world, which is essentially incorporated through practical work. Practical work, however, requires teachers and universities to work on maintaining expensive space, infrastructure, and equipment, which often requires qualified personnel. Another difficulty inherent in the use of this equipment and infrastructure is that students' free time is not necessarily compatible with the hours available for laboratory use.

Although the use of simulators is often economically viable, these tools are pedagogically limiting as they do not allow testing of case studies that encompass all possible real-world interference variables. In courses involving some level of electronics, the use of simulators can pose an even greater problem, as lack of practice can prevent the student from developing skills for circuit development, tooling and interpretation of data from test equipment.

Thus, this work describes the development of an educational kit, accessible to students, of oscilloscope and signal generator controlled by a computer system.

The signal generation system was capable of displaying output signals up to 100 kHz in sawtooth, sine triangular and square waveforms with average error of less than 3%. Regarding the acquisition of signals through the oscilloscope, the oscilloscope allowed the visualization of signals up to 1.8 kHz with up to 3.6 V without the use of active probes.

Keywords:

Oscilloscope, signal generator, educational kit, engineering, electronics.