Lab 7 - TO Qianyi Zhao FROM Joshua Dean CC Professor Farmer...

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TO : Qianyi Zhao FROM : Joshua Dean CC : Professor Farmer DATE : October 28, 2010 RE : Lab #7: DC Operational Amplifiers- Applications I. ORGANIZATION OF LAB: On 10/21/2010 Joshua Dean and Eric Herrera performed GWU-ECE 11 Lab Experiment #7: DC Operational Amplifiers- Applications. Experiment #7.1: (1) circuit containing a DC inverting operational amplifier was analyzed by hand, built and measured in lab, to explore the input and output voltage, and determine the gain of that specific operational amplifier. Experiment #7.2: (1) circuit containing a DC non-inverting operational amplifier was analyzed by hand, built and measured in lab, to explore the input and output voltage, and determine the gain of that specific operational amplifier. Experiment #7.3: (1) circuit containing a DC summing operational amplifier was analyzed by hand, built and measured in lab, to explore the input and output voltage, and determine the gain of that specific operational amplifier. Experiment #7.4: (1) circuit containing a DC difference operational amplifier was analyzed by hand, built and measured in lab, to explore the input and output voltage, and determine the gain of that specific operational amplifier. Experiment #7.5: (1) circuit containing a DC buffer (current) operational amplifier was analyzed by hand, built and measured in lab, to explore the input and output voltage, and determine the gain of that specific operational amplifier. Experiment #7.6: (1) circuit containing a DC comparator operational amplifier was analyzed by hand, built and measured in lab, to explore the input and output voltage, and determine the gain of that specific operational amplifier. II. LAB FORMAT: The lab is broken up into six different sections, one per experiment (7.1-7.6). For experiment 7.6, the comparator operation amplifier, our group had to design a comparator that followed certain specification. For the all the experiments though PSPICE schematics were performed for each of the experiments, followed by hand calculations and most importantly data collected during the lab for each experiment. PSPICE schematics were used to check our measured values, and correct the built circuits if necessary. GWU- ECE 11-32 Experiment #7 Technical Memorandum – Joshua Dean
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Experiment 7.1 - Verification of DC Inverting Amplifier: Experiment Setup: For this experiment our group was asked to build a DC inverting amplifier onto the breadboard. It was assumed the R1 was equal to 10 K . The Agilent Power Source was set to positive and negative 12 volts at the 25-volt terminal and this was connected to V CC+ (pin 7) and V CC- (pin 4) of the operational amplifier. Once this was done the 6-volt terminal was set to 200 mV, and this was attached to the V N (pin 2) of the operational amplifier. Once all was set and then the power supply was turned on and the V OUT was measured using the DMM. Our group had to verify that the gain (K) was -10, and all these values were recorded in the table. A series
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Lab 7 - TO Qianyi Zhao FROM Joshua Dean CC Professor Farmer...

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