Transistors are a fundamental building block of modern electronics, used in a vast array of applications from amplifiers to digital circuits. They are a three-terminal device composed of semiconductors with two main types: bipolar junction transistors (BJTs) and field-effect transistors (FETs). The operation of a transistor is based on the control of current flow between the collector and emitter terminals by the voltage applied to the base terminal. In this blog post, we will explore the basics of transistors, including their structure, operation, and applications in the field of electronics. Whether you are a hobbyist or a professional, understanding the basics of transistors is essential for anyone interested in electronics.