This circuit is called a high-side switch – it enables you to toggle ... enough that we typically just refer to them as NPN or PNP transistors. These are all under the transistor umbrella ...

In this lesson, students build two circuits and ... The first transistor, invented in 1947, was the point-contact transistor. William Shockley improved on this design with his junction transistor, a ...

In this lesson, students build two circuits ... junction transistor, a three-layer sandwich of different types of semiconductor. The diagram illustrates the basic design of an NPN junction transistor.

This transistor switching circuit uses an npn transistor, a voltage divider (consisting of a \(5 kΩ \) resistor and thermistor) and a \(5 V\) power supply. Use the information in the table to ...