O'Reilly logo

Learn Arduino Prototyping in 10 days by Kallol Bosu Roy Choudhuri

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Using transistors

Transistors are commonly used for switching. They act just like a physical ON/OFF switch. Transistors are a separate subject altogether, hence the focus will be to stick to the basics, to the extent needed to start building prototypes with the Arduino.

A typical transistor has three legs, known as: Collector, Base, and Emitter. The most common types of transistors are classified as PNP and NPN transistors. If you hold the flat face of a transistor towards yourself, then for a PNP type transistor, the legs are arranged in the order--Collector, Base, and Emitter (from left to right); whereas for a NPN transistor, the legs are arranged as Emitter, Base, and Collector (from left to right).

A transistor is built in such a way ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required