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Operational Amplifiers and Negative Feedback

Physics 3330 Experiment #4 Fall 2013 Experiment #4 Operational Amplifiers and Negative Feedback Purpose This experiment shows how an Operational amplifier (op-amp) with Negative Feedback can be used to make an amplifier with many desirable properties, such as stable gain, high linearity, and low output impedance. You will build both non-inverting and inverting voltage Amplifiers using an LF356 op-amp. Introduction The purpose of an amplifier is to increase the voltage level of a signal while preserving as accurately as possible the original waveform. In the physical sciences, transducers are used to convert basic physical quantities into electric signals, as shown in Figure An amplifier is usually needed to raise the small transducer voltage to a useful level.

Operational Amplifiers and Negative Feedback Purpose This experiment shows how an operational amplifier (op-amp) with negative feedback can be used to make an amplifier with many desirable properties, such as stable gain, high linearity, and low output impedance. You will build both non-inverting and inverting voltage amplifiers using an LF356 ...

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