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Lab 5 - Lab 5 Op-amps Introduction In this lab we examine...

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Lab 5: Op-amps Introduction: In this lab we examine the properties of Op-amps. We use it in amplifiers, push-pull circuits, and one circuit that includes feedback. In part one we use it for an open-loop gain using the a variable resistor in the circuit shown below: + - +15 V -15 V V out We varied the resistance and watched the output as the input voltage went from positive to negative. We found the following results: In part B we replace the variable resistor with a function generator and use sine wave, square wave, and triangle wave inputs. The results are shown: In part two we constructed the non-inverting amplifier shown below + - V out V in 1 k 5 k We used triangular and sinusoidal inputs with peak-peak amplitudes of 2V (for some reason we couldn’t get it down to 1V). V V k k V in ed outpredict 12 ) 1 5 1 ( = + =

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d outmeasure V was 11.8 V. Clipping began to occur when the input amplitude was 6.4V peak to peak. Clipping began to occur when d outmeasure V reached 13V, 1V away from the rails. In part 3 we used set up an inverting amplifier as shown below and repeated the steps
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Lab 5 - Lab 5 Op-amps Introduction In this lab we examine...

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