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SUMMARY :
This experiment, named ˇ§operational amplifiersˇ¨, is consisted of three different parts. An operational amplifier system is used in every of these parts. ...
By the end of this experiment, the operation of an operational amplifier has been appreciated. ... INTRODUCTION :
The term operational amplifier was primarily used to describe an amplifier circuit whose characteristics were such that it could be used to provide and carry out linear mathematical operations. ... Operational amplifiers were originally used in analogue computers. Today, they can be found anywhere including:
„« Audio production
„« Communication systems
„« Digital processing
„« General electronics
Nowadays, the cost of an operational amplifier is ˇ§convenientlyˇ¨ low so they can be used as general-purpose amplifiers. They are high-gain voltage amplifiers, whose objective is to amplify signals over a wide range of frequencies. ...
As this experiment is concerned, the behavior of three types of operational amplifiers, is going to be examined. ... THEORY :
A representation of the circuit symbol of an operational amplifier is illustrated in figure 1.
Figure 1
An operational amplifier is usually represented by what is called its equivalent circuit. ...
Figure 2
The equivalent circuit of an operational amplifier is illustrated in figure 3. ... 1 Inverting Amplifier
The observation that can be made for the gain of the inverting operational amplifier is that as the feedback R2 decreases, the gain decreases too. So there is proportionality between the gain of an inverting operational amplifier and the feedback resistance. ... 3 Non-Inverting Amplifier
For the non-inverting operational amplifier experiment, it can be said that it is pretty similar to the inverting operational amplifier. ... Such non-inverting amplifiers may be used in systems which control the motion of a particle by converting the electrical energy to mechanical work. The possible wanted outcomes of a system like that Such non-inverting amplifiers may be used in systems which control the motion of a particle by converting the electrical energy to mechanical work. ... CONCLUSION :
This experiment, which has been divided in three parts, examines the operation of three operational amplifier circuits. In this experiment, the theoretical approach versus the experimental approach of operational amplifiers has been shown successfully. ... The inverting and the non-inverting amplifiers, showed a similar behavior. ... The experiment can be more challenging and complex if other circuits instead of inverting, integrator and non-inverting amplifiers are to be used. Such circuits can be Wheatstone bridge circuits with operational amplifiers and other circuits with more resistors and capacitors.
Approximate Word count = 2402
Approximate Pages = 9.6
(250 words per page double spaced)
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