Arquivos mensais: junho 2018


Almost all electronic equipment needs a constant voltage and especially can not have voltage signal inversion. Signal inversions can be prevented with a device called a diode.

The diode reacts in relation to the electric charge flow.               reelcraft S601013-35

We notice that there are periods of lack of energy that arise periodically. In the electrical schemes the capacitors are represented with two parallel lines that symbolize the two conductors and, connected to the traces, two wires are designed that serve to access the conductors to be able to do the processes of loading and unloading the capacitor.

Energy storage is not the only application of the capacitors and we will see another type of application very applied in electronics, namely the possibility of defining a time scale with a combination of capacitor and resistor.

There is also a third application of capacitors very interesting. A capacitor can be used to store information. This happens on your USB Flash Drive.

Of course we want stored information not to go out over time. Above we say that even with careful isolation of the two conductors of a capacitor, the loads can escape over time. But for small amounts of load one of the conductors (called a “floating-gate”) can actually be insulated in such a way that the load on the driver does not escape for many years.


Transformers Modeling

The modeling methodologies of two or multiple winding transformers and their uses are mentioned several for the purpose of disseminating what has been done in the area.

When studying electrical systems, it is necessary to elaborate models that simulate their behavior. The purpose of the modeling is to create a tool that allows studying the behavior of the electrical system, for example, a transformer, when the system itself is inserted in an electric circuit.         Boston Gear 5M319090

The modeling does not supply the experimental analysis, but instead, the results of the modeling of an electrical system must be complemented, thus concluding the study of the electrical system in question.

Models that include the saturation and losses of the nucleus, namely the hysteresis cliclo, have as equivalent circuit a coil in parallel with a resistance, where the magnetic behavior and its characteristics are represented only in a single electric circuit.

From the implementation point of view, the use of discrete transformer circuit models, which are related to a non-linear inductor in parallel with a non-linear resistance, prove to be complex, because the resulting equivalent circuit for the transformer and the matrices of impedance is complex and the matrices are constituted by a large number of elements.