Essential Concepts in Electronics: Components and Circuit Theory

Electronics: Electricity is the branch that deals with the study of control behavior of electrons passing through a special circuit called electronic circuits. (example): alarms. They distinguished three stages of electronic valves termoiòniques; electronic transistors, electronic integrated circuits. The electronic circuit: The association of various electronic devices and componemnts, interrelated if the purpose of carrying out a particular function. It has several parts: input (type of electric current signal caller), signal processing, signal transmission. The type of signal can be analog and digital. (Passive elements:)The electronic components are the elements that make electronic circuits and are processing the signal enters the circuit and the transmitting end system. Are classified into passive and active elements. Elemets liabilities: are those that do not alter the shape of the signal. For example, the resistor, the capacitor and the coil. The Resistor: is a component designed to provide resistance determinadad the passage of electrical current. The characteristic parameters of a resistor are the face value (expressed in ohms) and tolerance (margin of error, the manufacturer gives a% q) and nominal power. FORMULA: The Condenser: A component is made up of 2 metal plates (armor) separated by an insulating material (dielectric). Used to store an electric charge relaivament important in a small area. The two parameters that define it are:capacity (Farad F), working voltage (V volts). The Coil: A series of turns of conductive material has the property q to store energy in a magnetic field when electricity flows variable intensity. The crucial parameter is the self-induction coefficient (L) and expressed in Henry (H). Semiconductor materials: Those which have a conductivity between the drivers and the insulation.
Example: silicon, germanium, gallium arsenur. The pure are called intrinsic semiconductors. Semiconcuctors The state doped with 3 or 5 electrons are called extrinsic.
Diodes: elsdíodes rectifiers used in the circuits that allow passing of a signal alternsinu
soïdal a signal contunu. type diodes: (Light-emitting diode) emitting diode radiates in llum.En lapolarització direct form of energy. (Viewer) is composed of seven diodes. (Photodiode): q diode does affect you in the light. (Zener diode). The transistor: This is the basis of modern electronics integrated circuits and microprocessors, which are essential in the computing world. Used to increase the power of small signal current. (Example - to hear telephone). The three areas are the transistor: the emitter (E), base (B) and collector (C). In the curve of a transistor are distinguished: cutting area, active zone and zone of saturation .