The two types of standard transistors are PNP and NPN which differs in circuit symbols. The layers of semiconductor material used to make the transistor are denoted by the letters. To keep a straight ...

Ever since the development of the first working transistors in 1947, the electronics industry has experienced tremendous growth in numerous ways. For instance, transistors allowed for the ...

The transistor is probably the most important invention in electronic engineering and the basis for nearly all integrated circuits (ICs). The transistor is a three-terminal electronic device that can ...

It is made from a sandwich of three layers of semiconductor material: two layers of n-type material, which is a semiconductor doped with elements that provide extra electrons, and one layer of p-type ...

The first bipolar junction transistor was invented in 1947 at Bell laboratories. “Two polarities” is abbreviated as bipolar, hence the name Bipolar junction transistor. BJT is a three terminal device ...

Transistors are made up of semiconductor material which is most commonly used for amplification or switching purpose, although they can also be used for controlling the flow of voltage and current.

Transistors are tiny switches that can be triggered by electric signals. They are the basic building blocks of microchips, and roughly define the difference between electric and electronic devices.

Presented here is a simple circuit that will help you figure out whether a transistor is npn or pnp type. If the transistor under test is npn, red LED will blink. If it is pnp, green LED will blink.