electronics basics

Basic electronics and electrical technology
Engineering studies

1. Presentation by Dr.S.Kavitha

2. What is Electronics? Electronics is the science of how to control electric energy, energy which the electrons have a fundamental role. Its also deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive electrical components and interconnection technologies. You will work with a number of basic electronic components when building electronic circuits, including resistors, capacitors, diodes, transistors, and integrated circuits. Here is a brief overview of the functions of each of these basic electronic components.

3. Part of Electronics Components Transformer (Trafo) Integrated Circuits (IC) Multimeter/Ohmmeter Capacitor Resistor Diode Light-Emitting Diodes (LED) Transistors

4. Transformer A transformer is an electrical device that transfers electrical energy two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power. Transformers can thus be designed to efficiently change AC voltage from one voltage level to another within power networks. Transformers also can be used in television, computer, and electric station.

5. Integrated Circuits Integrated circuit, another name for a chip, is a small electronic device made out of semiconductor material. The first IC was developed in the 1950s by Jack of Texas Instruments and Robert Noyce of Fairchild Semiconductor. ICs are used for a variety of devices, including microprocessors, audio and video equipment, automobiles, and other home appliances.

6. Multimeter/Ohmmeter A multimeter, also known as a Volt-Ohm meter , is an electronic measuring instrument that combines several measurement functions in one unit.

7. Capacitor Capacitor is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field . Capacitors come in several different varieties, the two most common being ceramic disk and electrolytic . The amount of capacitance of a given capacitor is usually measured in microfarads, abbreviated μF.

8. Resistors Resistor is passive-two electrical component that implements electrical resistance as a circuit element . Resistors act to reduce current flow, and, at the same time, act lower voltage levels within ci r cuits. If you put resistors next to a penny, you get an idea of how small they are.

9. Diode Diode is a two-terminal electronic component with asymmetric conductance; it has low resistance to current in one direction, and high resistance in the other. The most common function of a diode is to allow an electric current to past in one direction , while blocking current in the opposite direction.

10. Light-Emitting Diodes A light-emitting diode (or LED) is a special type of diode that emits light when current passes through it.

11. T ransi s tor Transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit.