Search
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

# Inverting amplifier - Essay Example

Summary
The aim of the paper “Inverting amplifier” is to examine operational amplifiers. Modern electronic systems and communications are largely relying on operational amplifiers as some difficult operations like analog to digital conversion and digital to analog conversion…

## Extract of sampleInverting amplifier

Download file to see previous pages... Since the feedback and input resistances are constant, the gain variation is dependent solely on the source impedance. It then becomes apparent that maximum gain is achieved only when the source impedance is at a minimum value (assumed to be zero). Likewise, the minimum gain is reached when the source impedance is at a maximum value of 50 ohms. Using this information, the following equations are constructed: c. The designed circuit was simulated using Multisim. To determine the gain characteristics at the minimum and maximum source impedance settings, two sets of simulations were run. The first set was performed with a source impedance of 50 ohms and the second set shorted the said resistor. To more effectively capture the response of the circuit, a DC sweep was performed from 100 mV to 1V for each simulation. The results of the simulations can be seen below: Seeing these results, it can be said that the actual response of the circuit was above the lower limit for the gain. However, under certain conditions, it can be seen that the actual response of the circuit exceeds that of the theoretical upper boundary established. This difference is present due to the fact that the design took into consideration an ideal op-amp while Multisim uses a more complex model. Particularly, the finite input resistance and the presence of offset voltages may explain the variations from the design. The first set was performed with a source impedance of 50 ohms and the second set shorted the said resistor....
d. A basic op-amp may be used for this circuit. To reduce the effect of input resistance, a low offset JFET input op-amp such as the LF411 may be appropriate. The resistors for the circuit have the values shown in the circuit above.
2.
a. To analyze the given circuit, it is useful to treat the op-amp as an ideal device with infinite input impedance. Knowing this, it is easy to derive the output expression for the circuit. Using the principle of superposition, the effect of each source can be taken while the remaining sources are shorted to ground. For instance, the effect of v1 on the output can be treated separately while v2, v3, and v4 are connected to ground. Due to the infinite resistance of the op-amp, the following equation can be obtained:

Since the potential on the inverting and non-inverting inputs of an op-amp can be seen as equal the non-inverting input can be seen acting as a virtual ground. Knowing this, the previous equation can be transformed using Ohm's law to:

This equation can be subsequently transformed into:

Using a similar analysis, the remaining contributions to the output voltage are obtained:

Taking the sum results to the output voltage expression:

b. Assuming values of 1k, 2k, 3k, and 4k for R1, R2, R3, and R4 respectively and a value of 2k for the feedback resistor, the following output voltage is obtained:

c. The circuit was simulated on Multisim with the following circuit:

Using this schematic, a value of 799.979 mV was obtained at the output. Comparing this to the theoretical output voltage reveals that the circuit operates close to ideal. The remaining error can again be attributed to imperfections of the devices.
d. For a single ...Download file to see next pagesRead More
Click to create a comment
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Audio Crossover Circuits
The circuit is to be built to eliminate the need of using additional components to the system. This paper is to include the analysis of a first order crossover circuit, the designing that involve the designs of the circuits. The possible improvements to the systems are also to be analyzed in this case and conclusions made upon the analysis of the circuit and its components.
8 Pages(2000 words)Essay
Research proposal in Systems Biology
In fact, "many high throughput techniques have been discovered which enable a precise simultaneous monitoring of the expression of thousands of genes," (Goldbeter, 1996) and significant progress has been made toward precise and mathematical appreciation not only of individual entities but also of the interaction and inter-relationship of components of biological pathways.
2 Pages(500 words)Essay
Management Accounting
This report aims to develop a blueprint for the implementation of management accounting system for the company according to its specific needs,
6 Pages(1500 words)Essay
Troubleshooting Electric Circuits
This is the process of diagnosing the source of the problem. Once the problem has been correctly diagnosed, then a person can go on to find the best regimen for solving it. In this paper, I will explain
4 Pages(1000 words)Essay
Troubleshooting electric circuits
Further, there is also a relative importance on paying attention to small details by making sure that the materials or components involved are secured and functional which are excellent cues in resolving more complex problems. In this study, I have discovered manifold
1 Pages(250 words)Essay
Electrical and electroinc
the signal is additive in nature. In positive feedback connection, the feedback signal is connected in phase with the input signal as shown in the diagram below. The feedback is added to the input signal and as a result, a larger amplitude output signal occurs. Positive
8 Pages(2000 words)Essay
Paraphrasing#2
more skills on making professional presentation and utilizing some techniques on how efficient information could be made available to target audience. I designed a traffic controller circuit through the use of NAND gates as part of the Logic gated, and confirmed its
3 Pages(750 words)Essay
Paraphrasing
The purpose is to determine the Thevenin’s equivalent for linear resistive circuits. In this type of experiment, the first step in the lab is to list all the resistors required for Thevenin’s
1 Pages(250 words)Essay
Tuner circuit tt
The aim of this experiment is to see how a tuned amplifier works and to show how resonance frequency can be used as a channel by changing the input frequencies. In addition, the paper will compare the output amplitude for a number
4 Pages(1000 words)Essay
Design of Motor Speed Sampling, Amplification, Filtering and Display
By focusing on the electronic functionalities, we can effectively divide circuits into the following four types (Zettler, 2007, p.9): Noteworthy, the Speed controlling, Amplification and filtering circuits
4 Pages(1000 words)Essay
Let us find you another Essay on topic Inverting amplifier for FREE!
+16312120006