Operational Amplifiers Lab Report Example | Topics and Well Written Essays - 1000 words

Operational Amplifiers - Lab Report ExampleThe slight difference in the heedful 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 brass of the library, some High Tension (High Voltage) public supply electricity line going around the science lab 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 violence supply too causes some variations in the proceeds 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 harvest of the dc input signal and the amplifiers closed-loop voltage gain. However, the output voltage has an added error component. If the ideal value of output voltag e is large with respect to the error component, then we can usually ignore the op amp mark that causes it. But if the error component is comparable to or even larger than the ideal value, we must puree 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 areWhen we disconnect the feedback loop (Resistor R), then it is no more closed loop gain for the op amp. at that place is no negative feedback. And input voltages at oscilloscope terminals are different. The measured values areChannel13VChannel2 14VAns. 8. instantly to get a gain of 6 in figure 5 (above), the calculated value of electrical resistance R is6 = 1 + (R/10000)i.e. R = 60000-10000 = 50KMeasured voltages . . . . . . Channel13VChannel214.3VCalculated gain . . . . .6 . . . . . . . . . . .Ans 9. Changing the peck setting to + 2 V, Measured voltages . . . . Channel12VChannel212VCalculated gain