|
|
Transistors are used as switches and amplifiers. We will discuss two types of transistors: PNP and NPN transistors. Both of these transistors has 3 pins: emitter, base, collector.
There aren't any standards for where and what order the physical pins are on the transistors, so be sure to check the packaging when purchasing.
|
 |
To allow electrons to flow through the collector and emitter of a PNP transistor, the following must apply:
The emitter is more positive than the base and the collector leads to the negative.
The NPN transistor is the opposite:
The collector must be more positive than the base and the emitter leads to the negative.
|
|
