Almost all kinds of amplifiers are composed from one of these 3 basic preamplifier topologies which offer different features like voltage or current amplification and they have different qualities concerning frequency response distortion rate phase shift etc...
1. Common emitter amplifier is one of three basic single-stage bipolar-junction-transistor (BJT) amplifier topologies, typically used as a voltage amplifier.In this circuit the base terminal of the transistor serves as the input, the collector is the output, and the emitter is common to both (for example, it may be tied to ground reference or a power supply rail), hence its name. The output is an inverted image of the input.
2. Common collector amplifier (also known as an emitter follower) is one of three basic single-stage bipolar junction transistor (BJT) amplifier topologies, typically used as a voltage buffer (current amplifier) it has a voltage amplification less or equal than 1 because the emitter voltage is less that unity (max voltage minus base voltage drop). Thanks to Secuture i recently learned that after a few modifications this kind of amp ceases to subdue to emitter degeneration and the negative feedbacks and actually could be used as a voltage amplifier too.
3. In electronics, a common base (also known as grounded-base) amplifier is one of three basic single-stage bipolar junction transistor (BJT) amplifier topologies, typically used as a current buffer or voltage amplifier (both voltage and current amplification). This arrangement is not very common in low-frequency circuits, where it is usually employed for amplifiers that require an unusually low input impedance, for example to act as a preamplifier for moving-coil microphones.