The emitter follower (EF) configuration is shown in Fig. 2.12.
The EF amp has a voltage gain of approximately one. With this kind of gain, you may ask what is the point? The point is that an EF has a very low output resistance and a high input resistance. It is therefore used as a buffer which is placed in between a high resistance source and a low resistance load, thereby providing the necessary current to the load without sagging the voltage. This will become more clear after this part of the experiment.
