THE ELECTRONIC

Transistors

 The definition of Electronics is the field of Engineering and Applied Physics related to the design and application of devices, in general to electronic circuits whose operation depends on the flow of electrons for the generation, transmission, reception and storage of information, among many others. more applications. This information can consist of voice or music as on a radio receiver, an image on a television screen, or numbers or other data on a computer.

Laptop

Electronic circuits offer different functions to process this information, including amplifying weak signals to a usable level; generating radio waves; the extraction of information, such as the recovery of the sound signal from a radio wave (demodulation); control, as in the case of introducing a sound signal to radio waves (modulation), and logical operations, such as electronic processes that take place in computers.

Historical background

The introduction of vacuum tubes in the early 20th century led to the rapid growth of modern electronics. With these devices the manipulation of signals was made possible, something that could not be done in the old telegraph and telephone circuits, nor with the first transmitters that used high voltage sparks to generate radio waves. For example, with vacuum tubes, weak radio and sound signals could be amplified, and sound signals could also be superimposed on radio waves. The development of a wide variety of tubes, designed for specialized functions, made possible the rapid advance of radio communication technology before World War II, and the development of the first computers, during and shortly after the war.

BC547 transistor

Today, the transistor, invented in 1948, has almost completely replaced the vacuum tube in most of its applications. By incorporating a set of semiconductor materials and electrical contacts, the transistor enables the same functions as the vacuum tube, but at lower cost, weight and power, and greater reliability. Subsequent advances in semiconductor technology, attributable in part to the intensity of research associated with the space exploration initiative, led to the development, in the 1970s, of the integrated circuit. These devices can contain hundreds of thousands of transistors in a small piece of material, allowing the construction of complex electronic circuits, such as those of microcomputers or microcomputers, sound and video equipment, and communications satellites.

Communication satellite

Written by Archie Tecnology

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