Electronics Lab Philippines

Transistor

Transistor
« on: August 22, 2018, 03:40:42 PM »
A transistor is a solid-state semiconductor device with functions such as detection, rectification, amplification, switching, voltage regulation, and signal modulation. The transistor acts as a variable current switch that controls the output current based on the input voltage. Unlike ordinary mechanical switches (such as Relay, switch), transistors use electrical signals to control their opening and closing, and the switching speed can be very fast, the switching speed in the laboratory can reach more than 100GHz.

In 2016, a team at Lawrence Berkeley National Laboratory broke the physical limit and reduced the existing state-of-the-art transistor process from 14nm to 1nm, completing a major breakthrough in computing technology.

A transistor is a semiconductor device commonly used in amplifiers or electronically controlled switches. Transistors are the basic building blocks for standard operating computers, cell phones, and all other modern electronic circuits.
Due to its fast response and high accuracy, transistors can be used for a wide variety of digital and analog functions including amplification, switching, regulation, signal modulation and oscillators. The transistors can be packaged individually or in a very small area that can accommodate a part of a 100 million or more transistor integrated circuit.

Advantages of the transistor:
Compared with electron tubes, transistors have many advantages:
1. The component is not consumed
No matter how good the tube, it will gradually deteriorate due to changes in cathode atoms and chronic air leaks. For technical reasons, the same problem existed at the beginning of transistor fabrication. With advances in material fabrication and many improvements, transistors have a lifetime that is typically 100 to 1000 times longer than tubes, and they are a permanent device.
2. Very little power consumption
It is only one tenth or one tenth of the tube. It does not require heating the filament to create free electrons like a tube. A transistor radio can be heard for half a year with only a few dry batteries, which is difficult for tube radios.
3. No need to warm up
Work when you turn it on. For example, when the transistor radio is turned on, it will appear soon after the transistor TV is turned on. Tube equipment can't do this. After booting up, I have to wait for a while to hear the sound and see the picture. Obviously, transistors are very advantageous in military, measurement, recording, etc.
4. Robust and reliable
It is 100 times more reliable than the tube, and it is resistant to shock and vibration. This is unmatched by the tube. In addition, transistors are only one-tenth to one-hundth of the size of a tube, and emit very little heat, which can be used to design small, complex, and reliable circuits. Although the manufacturing process of the transistor is precise, the process is simple, which is advantageous for increasing the mounting density of components. If you want to know more details about transistor, you can google ALLICDATA ELECTRONICS LIMITED.