Welcome to the next video in the series of electronics tutorials. In this video we will explore the Transistor. We will explore the two common types of transistor, The NPN and PNP. We will look at the how they work in a circuit and how we calculate the required components for switching applications. To demonstrate the circuits we will use the software called EveryCircuit. With kind thanks to Igor for permission to use the software in this and future tutorials. EveryCircuit is available at www.everycircuit.com