The main role of MOS tube is to amplify electrical signals, which are used in electronic devices for switching control, power management, data transmission, etc. The principle of MOS tube is based on the reverse bias effect of the PN junction, i.e., when the PN junction is in reverse bias, its resistance is very large and the current is almost zero.
The MOS tube is a field effect transistor, which is composed of metal, oxide and semiconductor materials.The principle of the MOS tube is based on the reverse bias effect of the PN junction, i.e., when the PN junction is in the reverse bias state, its resistance is very large and the current is almost zero. And when the PN junction is in forward bias, its resistance is very small and current can flow through the PN junction.
In MOS tubes, a certain voltage is added between the gate and the source, which can change the resistance between the gate and the source, thus controlling the current between the drain and the source. Specifically, the structure of a MOS tube consists of a gate, a drain and a source. When the voltage between the gate and the source is 0V, the resistance between the drain and the source is large and the current is almost zero.
When the voltage between the gate and the source is positive, the gate creates an electric field that makes the resistance between the drain and the source smaller, and current can flow between the drain and the source. This makes it possible to control the current between the drain and the source by controlling the voltage between the gate and the source, thus realizing functions such as amplification and switching of the circuit.
History of MOS tubes
The history of MOS tubes can be traced back to the 1960s, when researchers began to work on PN junction-based transistor technology. However, there were some problems with this transistor in practice because the reverse bias effect of the PN junction would result in almost zero current.
In order to solve these problems, researchers began to study the field effect transistor technology based on metal-oxide semiconductor materials.
In the early 1970s, researchers at Bell Labs in the United States succeeded for the first time in producing a field effect transistor based on metal-oxide semiconductor materials, which marked the birth of MOS tube technology.
With the continuous development of technology, MOS tubes have gradually become an integral part of electronic equipment. In computers, cell phones, TVs and other electronic devices, MOS tubes are widely used in switching control, power management, data transmission and other aspects. At the same time, MOS tubes are also widely used in automotive electronics, aerospace, medical equipment and other fields.