Tag: Amplifier

The Multiplexer The Multiplexer or MUX is a combinational logic circuit that connects one of the several input lines to a single output line. It is a combinational logic circuit and, as such, it is memoryless, without storage, and feedback involved. The multiplexer’s output is solely...

Introduction In the introduction tutorial Operational Amplifier Basics, we have briefly seen that from the same op-amp, many configurations leading to different functions can be adopted, depending on how the feedback loop is designed. In this new tutorial, we propose to detail the...

Introduction In a very simplified point of view, an amplifier consists of a "box" that realizes an amplification function between an input signal and an output signal. The way that the input enters the system and the output leaves it is very important and affects the general behavior of...

Introduction Despite their differences, we have seen in the previous tutorials about class A, class B and class AB amplifiers, that these three classes are linear or partially linear since they reproduce the shape of the signal during the amplification process. This is due to the fact...

Introduction Class A amplifiers offer a very good linearity of the output, meaning that the signal is faithfully reproduced, however their efficiency is very low, around 20-30 % in most of the cases. On the other hand, class B amplifiers present a very high efficiency up to 78.5 % but...

Introduction We have seen during the previous tutorial that Class A amplifiers are characterized by a conduction angle of 360° and a theoretical maximum efficiency of 50 %. In this new tutorial, we will present in detail another class of amplifiers known as Class B that have been...

Introduction Amplifiers are commonly classified depending on the structure of the output stage. Indeed, the power amplification really happens during that stage and therefore the quality and efficiency of the output signal is dictated by the architecture of the amplifier's output. The...

Presenting the Common Emitter Amplifier In the next three tutorials, including this one, we will present the three elementary topologies of bipolar transistors based amplifiers : the Common Emitter Amplifier, the Common Collector Amplifier and finally, the Common Base Amplifier. We...