Electronic is a science that studies the behavior and behavior of electrons in space, in gases, in crystals, and in semiconductor solid materials. The electronic circuits control both the electrical energy and the other energy. They can also convert any physical phenomenon (such as heat, light, sound) into electrical energy. Electronic diode, transistor, integrated and vacuum tube, such as electronic tubes through the flow of electrons through the results are examined. The electronics also deal with Maser and Laser, which emit electrons from the ball or gas. Because there is no mechanical movement in electronic devices, things can be done quickly and economically.
Electronically based 17th, 18th and 19th centuries have been taken with inventions made on electricity. Among the inventors of the present invention, Science like William Gilbert, Newton, von Guericke, Coulomb, Franklin, Galvani, Volta, Oersted, Ampere, Faraday, Ohm, Henry, Weber, Morse, Maxwell, Bell, Edison, Herz, Roentgen, Marconi
The electronics began in 1883 when Edison found a bulb.
When he applied positive voltage to this plate, he saw a current flow through the lamp. Later in 1897, this lamp was rectified and the alternating current was turned to direct current. In addition, radio waves were separated and detectors were developed. In 1906, a control element was added to this diode lamp, working on a triode lamp, so the electron path was opened.
In 1948, with the presence of semiconductors and transistors, lighter devices were realized and the lamp was removed from many application areas. Today, with the introduction of integrated circuits and the development of micro elements, very small electronic devices have been developed.
Since electronics enter almost every scene, it is not possible for one person to know all the electronic issues. So the electronics are divided into arms. E.g; industrial electronics, digital electronics, communication electronics, microwaves, medical electronics, nuclear electronics.
On the electronic site;
At the beginning of the twentieth century, radios, radios, televisions, various system controls, computers, measurement and test equipment, In 1910, the radio developed with the discovery of the De Forest strong> triot tube. The radio played an important role in the First World War. The first general radio broadcast was made in Pittsburgh, USA, in 1920 as AM (amplitude modulation). In 1935 it followed FM (frequency modulation). Radio until the discovery of television in 1947; education, information and entertainment. In 1912, the Marconi Company drove the radio direction finding device made by Ettore Bellini strong> and Alessandro Tosi strong>. This device has been in use since 1918 for navigational purposes to provide naval and air traffic.
After radio, the biggest step taken in radio is radar. The radar is based on the principle that ultra-frequency radio waves will travel back and forth in a distant object, such as a ship or a plane.
Television strong> has emerged after long laboratory studies in the World War II, radar, fire control systems and navigation systems. First, electron beam scanning of the cathode tube was done with mechanical discs. This type of television started broadcasting in 1927 in New York. Since the mechanical scanning system occupied a lot of space and could not respond to the desired ones, work continued to make the scanning electronically. Finally in 1939, the RCA firm in the USA succeeded in making the television system of today.
In 1904, John Fleming strong> advanced electronically by finding a diode vacuum tube, and then in 1906 De With the development of Forest’s triode vacuum tube, it was suddenly developed and the tube electron became dominant for 40 years. In 1948, the tube was left in semiconductors by the presence of semiconductor diodes and transistors by John Baroleen, Walter Brettain and William Shockley.
transistors; They were very advantageous compared to vacuum tube diodes and triodes because they were small, light, very energy-efficient, heat-demanding, efficient, long-lasting.
The necessity of placing smaller electronic devices on a particular area has led to the reduction of electronic parts. However, since these studies were not enough, research on microelectronics topics continued. Diode transistors, printed circuits and finally integrated circuits are achieved.
The integrated circuit is achieved by placing several transistor diodes, capacitors and resistive elements on a single silicon crystal. Radio receivers made of semiconducting parts are cheap and small, portable. Transistors have also caused the size of the compacts to shrink. Microcomputers have taken the place of the computers that are filling the big rooms with the emergence of the transistor and working with a lot of energy. The role of transistor in space studies can never be neglected.
The use of electronic devices outside military space began after the 1930s. Alarm devices, internal communication, microwave ovens, light control lamps, various control systems are part of electronic devices. Among commercial and industrial electronic devices, it is possible to count calculators, computers, photocopiers, measuring instruments.
In medicine, many electronic devices such as x-rays, electrocardiography, ultrasonic machines, electroshock devices, hearing aids are used in applications.
Maser and Laser are very new in electronics but they are going to make great improvements in the future. In contrast to the electron cloud inside the Maser and Laserin principle electron tube, radiation is emitted from molecules with very high frequency electromagnetic waves. For example, the ammonia molecule emits radiation at 24,000 MHz.
Maser (Microwave Amplification by Stimulated Emmision of Radiation) operates in the microwave range of the frequency spectrum, so even very weak signals have the transport feature. Ideal for space communication. Since it works with infrared, ultraviolet wave laser, it is able to make intense radiation in one direction. Laser is able to perform important tasks in confronting, mesurement, welding and cutting tasks. Share Information on Pluralists.