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Introduction

Continuing the content of science at the level of physics, in reference to the subject of alternating current, where as it appears a force on it due to the field where it is located, for the case of alternating electric current this is based on the magnitude and sense vary cyclically, remember that Kirchoff's lemma shows us that the sum of the f.em. of a mesh is equal to the sum of the products of the intensity, by the resistances of each branches, in the previous publication I share them on the instantaneous power is the product of the tension of the generator, by the total intensity, which is circulating by the circuit, continuing in the circuit cycle is it Starting from Ohm's law for current: V/I = √R²+(L.ᦍ - 1/C.ᦍ)² = Z, the pulsations in reference to ᦍ, case the scheme of alternating current, it is considered that the circuit is in resonance at ᦍr provided that it is expressed as follows: Z = √R² + (L.ᦍ - 1/C.ᦍ)², but to apply that is fulfilled must be =0, since L.ᦍ - 1/C.ᦍ= 0, we are simplified we are left with: ᦍr = √1/L.C, now it is clear to us that is fulfilled when in the circuit is not evident phase shift considering f.e.m.

Friend reader now we have the alternators, but we must know the following, in a circuit this is in resonance when, it is evident that an oscillator capable of varying the current pulses, it is achieved that the impedance is minimal, since an alternator in the case of two-phase is one that produces two f.e.m completely out of phase with each other. When you mix the technology and the hundred within this contesto shows us dynamically, that Obtaining electricity from mechanical energy, as it has a rotating engine is relatively simple, to hour friend reader for the case of application in the automotive sector we have the following contribution at the level of the field of physics, it can be evidenced that this generating alternating voltages and with the use of semiconductor diodes and even electronic circuits is possible to obtain a much better performance for the electrical system of the vehicle, I base elnesque of alternator circuit.

On the other hand we have that for the case of a single-phase alternator assuming that it has .the induced spiral in the same plane, this can be placed two perpendicular plane so that we obtain a two-phase for 90⁰ and for the three-phase are with three spirals for form120⁰. A very important fact at this level of circuits is that each phase and center this refers to the phase voltage and the other represents the line voltage in V, where: cos 30⁰ = v/2/127 and v= 127 .√3= 220v, assuming as phase 127 using the graph with the line voltage.

An example reader friend to have knowledge about this content at the level of the field of physics, is that we have the information base apartir of a voltage regulator of a car can be of two types, where the el. primeto the voltage regulator connected to ground regulates the amount of negative energy entering the rotor, entonce for the case of the second we have that the voltage regulator connected to ground field controls the amount of positive energy entering it, which is why reader friend that the instantaneous power is the product of the generator voltage by the total intensity which is what represents what circulates in the circuit, as we also speak of alternating currents instantaneous power is varies depending on the case that meets the variation in time sinusoidally.

[1]General Physics by Santiago, Burbano, 2003.