Lab 40 Nonlinear Op.docx - 40 Nonlinear Op-Amp Circuits Name David Santiago Gordillo Barahona Date Class READING Text Sections 19\u20131 through 19\u20133

# Lab 40 Nonlinear Op.docx - 40 Nonlinear Op-Amp Circuits...

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40 Nonlinear Op-Amp Circuits Name David Santiago Gordillo Barahona Date 10-12-2020 Class ___________________ READING Text, Sections 19–1 through 19–3 OBJECTIVES After performing this experiment, you will be able to: 1. Construct and test an op-amp comparator, an integrator, and a differentiator circuit. 2. Determine the response of the circuits listed in objecti ve 1 to various waveforms. 3. Troubleshoot faults in op-amp circuits. MATERIALS NEEDED Resistors: One 330 Ω, one 1.0 kΩ, four 10 kΩ, three 22 kΩ, one 330 kΩ Capacitors: One 2200 pF, one 0.01 μF, two 1.0 μF Three 741C op-amps One 1 kΩ potentiometer Two LEDs (one red, one green) SUMMARY OF THEORY The basic op-amp is a linear device; however, many applications exist in which the op-amp is used in a nonlinear circuit. One of the most common nonlinear applications is the comparator. A comparator is used to detect which of two voltages is larger and to drive the output into either positive or negative saturation. Comparators can be made from ordinary op-amps (and frequently are), but there are special ICs designed as comparators. They are designed with very high slew rates and frequently have open-collector outputs to allow interfacing to logic or bus systems. Other uses of op-amps include a variety of signal processing applications. Op-amps are ideally suited to make precise integrators. Integration is the process of finding the area under a curve, as shown in the Summary of Theory for Experiment 30. An integrator produces an output voltage that is proportional to the integral of the input voltage waveform. The opposite of integration is differentiation. Differentiation circuits produce an output that is