Читать книгу Electronics All-in-One For Dummies - Lowe Doug, Doug Lowe - Страница 52

A transistor is a three-terminal device in which a voltage applied to one of the terminals (called the base) can control current that flows across the other two terminals (called the collector and the emitter). The transistor is one of the most important devices in electronics, and I cover it in detail in Book 2, Chapter 6. For now, you can just get a few simple 2N3904 NPN transistors, shown in Figure 3-19, to have on hand.

FIGURE 3-19: A look at a 2N3904 NPN transistor.

Don’t worry; by the time you finish Book 2, Chapter 6, you’ll know what the designation 2N3904 NPN means.