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For top radio control car understanding, you need to understand the basics. We're going to analyze what might be called specialized uses diode by little as you go using, to strengthen the necessary theoretical explanation of its practical application. So then we will explain what is happening internally in a diode when driving and when reverse biased, up to his behavior as a capacitor. As we know the ideal diode is a discrete component that allows current flow in a certain way and locks in the opposite direction. Figure 30.4.1 shows the symbol and the current-voltage characteristic curve of the ideal diode function. The sense current is allowed for A to K. Symbol and voltage-current Get to know the characteristic radio control car curve of the ideal diode. The curve presented is clearly that of an ideal diode has zero resistance because the current flow in a certain direction, and infinite resistance in the opposite direction. The zero resistance is indicated by the fact that current is infinite with a positive voltage infinitely small. And the infinite resistance is manifested because the reverse current is zero even for infinitely large negative voltages. The tip of the arrow symbol indicates the direction of movement allowed the current. There are radio control car system diodes fabricated in different ways but at the moment are all made from the union of two opposite characteristics of semiconductor materials, i.e. a P-type and another of type N. The basic material is silicon both areas which has 8 electrons in its final orbit and therefore has high affinity to combine with other atoms of silicon, forming a crystalline structure. These crystals are practically insulators have only a leakage current due to recombination of their natural hosts casual are called minority carriers. For these crystals conduct electricity were mixed with materials that have 7 or 9 electrons in its outer orbit. In the first case is a gap (absence of an electron) in the crystal, which clearly has a positive sign and the material is called P-type. In the second case there are free electrons in the crystal structure and the material is called N. Both materials are enriched impure conductors of electricity due to the addition of carriers (called major) but are less conductive than metals and isolators radio control car drivers. A sandwich material N and P forms a diode junction, or union. This structure is added two metal terminals for connection to the rest of the circuit.
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