Transistors: Understanding Behavior and Circuits

This lecture covers the basics of transistors, focusing on bipolar junction transistors (BJTs). It explains the analogy of a transistor as a valve regulating current flow. The instructor discusses ground rules and different views of transistors, such as current amplification. Through example circuits like current sources, emitter amplifiers, and followers, the behavior of transistors is explored. The lecture also delves into push-pull devices and impedance considerations, emphasizing the importance of not viewing transistors as simple voltage dividers. An anomalous transistor circuit involving a switch is presented, showcasing unique operating states. The session concludes with a summary of various transistor circuits, including followers, current sources, amplifiers, and switches.