If you want to control it from a 3.3 V MCU that can’t handle the high-side voltage on its pins, you can add a NPN transistor section as shown – this inverts the logic, making it into a more ...

He wound up using two common NPN transistors and 4 1K resistors. The circuit isn’t going to beat out a cheap linear regulator IC, but for the low component count, it is actually pretty good.

and Field Effect Transistors (FETs). BJTs are controlled by current, while FETs are controlled by voltage. Within these categories, there are further subdivisions such as NPN and PNP BJTs and ...

William Shockley improved on this design with his junction transistor, a three-layer sandwich of different types of semiconductor. The diagram illustrates the basic design of an NPN junction ...

The transistor is considered to be one of the most important inventions of the 20 th century because of its abundant use in most modern circuits and electronic systems. NPN and PNP are the two ...

There are several basic types of RF transistors: Bipolar RF transistors: Consist of an N-type or P-type layer sandwiched between two layers of the opposite type. Both NPN and PNP configurations are ...