Therefore practical amplifiers will have a finite distortion and a minimal noise with which they will invariably add to the said signal (Bishop, 98).An exception is given to the cases whereby the amplifier is a transducer which means that the amplifier shifts the types of signals from one point to another.
The mainstay of any electronic circuit will certainly be the amplifiers, (Bishop 18). Classification of amplifiers is broad but the best way that the amplifiers can be classified is in relation to the input and output of each amplifier. In order for the amplifier to have some gain then it means that the scale of the input and output signal to the amplifier will have some degree of variation. The definition of can be summarized as the quotient of three aspects that is the power, the current and also the voltage. Furthermore the gain will also be in terms of the output or the input signals of either the voltage or the power in any amplifier (Satyam and Ramkumar, 32). In cases whereby the gain is undefined then it implies that the input and the output signals in an amplifier is almost the same in terms of the unit signals thus in most cases a good example will be the decibels which has the same format described. This is not the case on a usual basis as there are other cases of amplifiers that do not follow this procedure like the transconductance amplifier. For the gain to occur in an amplifier then, many dynamics will have to be given special attention. These dynamics that will have to be put into consideration on an amplifier will include aspects such as the power source for the amplifier, the impedance on load in relation to the said amplifier and also the amount of the voltage going through the amplifier (Bishop, 33). In some other amplifiers that uses all these aspects will have the impedance meant specifically for the transfer of power within the amplifier. Driven by the desire to have a high quality result amplifiers will have their