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Operational Amplifiers are widely used for implementing simple and complex electronic circuits in electronic engineering. As a contribution to improve the way this integrated circuit is included in electronic engineering courses' curricula, this paper presents a prototype of an educational kit comprising a simulation tool and a reconfigurable hardware platform with the OpAmp uA741. It enables the...
The aim of this work is to design the cell string layout in stationary concentrating photovoltaic (PV) or hybrid systems (PVT) in order to minimize the effects of both the longitudinal and transversal shading inherent to concentrating collectors. In this paper it is determined the best configuration of a PV string of cells, composed by several modules, by using a simple mathematical model based on...
Electric boats can constitute a valid solution to face the nowadays energy paradigm. Among other advantages, the electric chains on-board of a boat can be efficient and environmental friendly. In this paper, the electric chain of an electric boat is modeled using as reference a low scale system. The system is studied considering a boat equipped with a DC-DC converter, a DC motor and an energy storage...
In this paper we will introduce the integrated projects implemented on several courses of the Electronics Engineering Bachelor and Master programs at IST with special emphasis on stimulate students' creativity and practice of implanting prototypes. The key hardware of these projects is a car model with controlled electric engine and sensors and actuators - SUBA.
Flexible printed circuit boards (fPCBs) have an important role in electronic product miniaturization due to their reduced thickness and ability to bend and adapt to various shapes. As with any new technology reliability should be assessed to guarantee quality of products that benefit from the additional features. Typical causes of cracking failure in electronic devices are related to mechanical stress,...
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