A Beginner's Guide to Electronic Components and Semiconductors
Most often when a person who has very little knowledge about electronics first looks at a circuit board full of components he or she becomes confused by the different strange looking objects as well as the diverse drawings on the board.
Therefore, before going deeper into the subject, they should be taught what electronics and semiconductors actually are. Electronics means the study and use of electrical appliances and devices that are operated by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors.
Electronic Components and Semiconductors are those basic elements that have been packed in a small form with two or more connecting leads or metallic pads. These components are soldered together to a printed circuit board so as to create an electronic circuit for a particular function (which may be a radio, amplifier etc). The components are usually packed singly and different names have been given for each, such as the diode, LEDs,
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Diodes are those one-way valve used for electrical current. The function of the diode is to let the electricity to flow in one direction from positive to negative, and not in the opposite direction. Most diodes look similar to a resistor and always have a painted line on one end showing the directi公众,
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LEDs or light emitting diodes are simple diodes that emit light. They are used as indicator devices to show that the machine is on. They are shaped in different sizes and colors. Some LEDs even emit infra red light which cannot be seen by the ########## eye.
The transistor is one of the most important inventions of the modern world. Transistors have two basic functions (a) to act as a switch to turn the current on and off and, (b) to act as an amplifier which converts an output signal to a magnified version of the input signal. There are different sizes of transistors which depend on their application. It may range from a big power transistor used in power amplifiers of the stereo, down to a surface mount (SMT) and even down to .5 microns wide such as in a microprocessor or Integrated Circuit.
Integrated Circuits, or ICs as they are commonly known, are actually complex circuits inside one simple package. The ICs are made out of silicon and metals so as to simulate resistors, capacitors, transistors,
ghd mk4 straightener, etc. ICs are compact and small in size. These components have are packed in a large variety of packages and sizes. Circuits have "pins" coming out of them. Circuits are used for performing the task of a simple timer, to that of a complex logic circuit,
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Microprocessors are large scale ICs and are very complex. At their core of a microprocessor lies transistor which provides the logic for computers, cars, TVs and other electronic items. Today microprocessors are becoming smaller and smaller as companies are finding out new ways and mean to make tinier transistors.
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