Operational Amplifiers

College
Lab Report
Science
Pages 4 (1004 words)
Download 0
Op-amps are direct coupled devices such that the input signal may be either AC or DC, or a combination of the two. The industrial standard op-amp, the 741, requires two power supplies, one positive and one negative. For most applications the magnitude of these two voltages is the same…

Introduction


The slight difference in the measured and calculated values is because of the non-ideal character of an Op-Amp, the connecting wires etc. The moisture component present in the atmosphere, the wiring arrangement of the library, some High Tension (High Voltage) public supply electricity line going around the laboratory also affects the measurements. Sometimes if the connecting wires make a loop then the induction effect also comes in picture.
Once again the non-ideal nature of electronic gadgets comes into picture. In fact the inherent resistive component of the power supply too causes some variations in the output parameters. The moisture present in the atmosphere or less than ideal nature of oscilloscope probes too causes variations.
The ideal output voltage should be the product of the dc input signal and the amplifier's closed-loop voltage gain. However, the output voltage has an added error component. If the ideal value of output voltage is large with respect to the error component, then we can usually ignore the op amp characteristic that causes it. But if the error component is comparable to or even larger than the ideal value, we must try to minimize the error. The closed loop gain mainly depends upon the external resistors. Op amp characteristics that add error components to the dc output voltage are:
When we disconnect the feedback loop (Resistor R), then it is no more 'closed loop gain' for the op ...
Download paper
Not exactly what you need?

Related papers

Computational fluid dynamics in filters
Essentially, a CFD simulation protocol is so computationally intensive and involves such esoteric mathematical skills (because it involves the solution of non-linear partial differential equations) that individual efforts at completion of these Herculean tasks is next to impossible. So, recently many software companies have sprung up that provide requisite software tools for the same (most notably…
Soft Systems Methodology
This action research-based, interpretive approach is strongly influenced by Vickers' (1968, pp.59,176) description of the importance of appreciative systems in dealing with human complexity. Checkland (1981), and Checkland and Scholes (1990) have attempted to transform these ideas from systems theory into a practical methodology that is called Soft Systems Methodology (SSM).…
Operational Amplifiers
The slight difference in the measured and calculated values is because of the non-ideal character of an Op-Amp, the connecting wires etc. The moisture component present in the atmosphere, the wiring arrangement of the library, some High Tension (High Voltage) public supply electricity line going around the laboratory also affects the measurements. Sometimes if the connecting wires make a loop then…
Research Methods and Statistics (Report)
That is, communication must be determined based on the different dimensions that surround this concept, which include, among others, the ability of the disabled individual to communicate through speech and nonverbal communication, as well as understand communication from other people, or as the message is being transmitted to him/her. When the dependent variable is clearly determined and…
Research Methodology
3. The relationships between the variables selected for study should be clearly defined in the case of social sciences research. According to Joseph(2007), social sciences research often deal with complex structures, which are very essential to illustrate the characteristics of the variables. These models which highlight the relationships between the variables should be clearly understood to make…
Nuclear Fission
A uranium atom is bombarded by slow moving neutrons. Nucleus that split produce three neutrons creating a chain reaction that must be controlled. Control in a nuclear reactor is obtained by using two isotopes of Uranium and . does not split when bombarded with neutrons and thus stops the chain reaction. Graphite modulators and control rods are also used in nuclear reactors to control the nuclear…