What is Transistor

Transistor the full name should be semiconductor transitor, also known as bipolar transistor, crystal triode, is a semiconductor device that controls current. Its function is to amplify weak signals into electrical signals with large amplitude, and it is also used as a contactless switch.

Transistor is one of the basic semiconductor components, which has the function of current amplification and is the core component of electronic circuits. The triode is to make two PN junctions close to each other on a semiconductor substrate. The two PN junctions divide the whole semiconductor into three parts, the middle part is the base area, and the two sides are the emission area and the collector area. The arrangement methods are PNP and NPN.