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Basics of Electronics Components

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Electronic Components Resistors Capacitors Inductors Diodes Transistors Relays  Integrated Circuits   Resistors:         Resistors determine the flow of current in an electrical circuit.Its is a passive two-terminal electrical component that implements electrical resistance as a circuit element.The current through a resistor is in direct proportion to the voltage across the resistor's terminals.   Types Of Resistors:        Fixed Resistors: Carbon Composition Resistor:   Carbon Film Resistor: Metal Film Resistor: Wire wound Resistor:   Thin and Thick Film Resistor: Surface Mount Resistor: Network Resistor:       Variable Resistors     Variable Resistor Semi Fixed Resistor    ...

Integrated Circuits

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             An integrated circuit contains transistors, capacitors, resistors and other parts packed in high density on one chip. Although the function is similar to a circuit made with separate components, the internal structure of the components are different in an integrated circuit. 

Relays

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               A relay is a simple electromechanical switch made up of an electromagnet and a set of contacts.The relay takes advantage of the fact that when electricity flows through a coil, it becomes an electromagnet. The electromagnetic coil attracts a steel plate, which is attached to a switch. So the switch's motion (ON and OFF) is controlled by the current flowing to the coil, or not, respectively.

Transistors

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                   The transistor's function is to amplify an electric current.Many different kinds of transistors are used in analog circuits, for different reasons. This is not the case for digital circuits. In a digital circuit, only two values matter; on or off. The amplification ability of a transistor is not relevant in a digital circuit. 

Diodes

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            Diode is a two terminal device that exhibits a low resistance to current flow in one direction and high resistance to current flow in other direction.The Direction in which current flows is referred to as the forward direction whilst that in which is negligible current flows is known as the reverse direction.This symbol is used to indicate a diode in a circuit diagram.

Inductors

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                 An inductor is a passive electronic component that stores energy in the form of a magnetic field. This symbol is used to indicate a coil in a circuit diagram. Inductance value is designated in units called the Henry(H). When alternating current flows through a coil, the magnetic flux that occurs in the coil changes with the current. 

Capacitors

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             The capacitor's function is to store electricity, or electrical energy. The capacitor also functions as a filter, passing alternating current (AC), and blocking direct current (DC). This symbol is used to indicate a capacitor in a circuit diagram. The capacitor is constructed with two electrode plates facing each other, but separated by an insulator.