INSTRUCTIONS The practical exam is open-handouts, open-notes & closed neighbor. Write your complete answer on the test i

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Instructions The Practical Exam Is Open Handouts Open Notes Closed Neighbor Write Your Complete Answer On The Test I 1 (106.07 KiB) Viewed 28 times

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INSTRUCTIONS The practical exam is open-handouts, open-notes & closed neighbor. Write your complete answer on the test in the space provided, Show all work and Steps required to solve the problem or perform the measurement. Correct answers without work will not receive full credit. Wrong answers without work will receive little to no partial credit. Please do all work on these papers and use the backs for extra work. Put answers in designated areas if available. APPLICATIONS OF OPERATIONAL AMPLIFIERS A control system needs the average of temperature from two locations. Temperature sensors make the temperature information available as voltages VI and V2. Design the op-amp circuit that outputs the average of these voltages using the inverting summer (See Figure P-1). R3 VEE -15.0V R1 Sensor 1 w U1 R2 Sensor 2 w Vout LM741CN Vec 15.0V Figure P-1 OpAmp circuit for averaging sensors voltage Please complete the following steps: 1. Identify what type of OpAmp circuit is presented in Figure P-1.
2. For the circuit in Figure P-1, what is the equation for Vout in terms of V1, V2, R1, R2 and R32 3. Choose components for the circuit that will make Vout the average of V1 and V2. In this step please make sure that your selected components that are available in the lab. If unavailable, please select the components with values closest to your calculated ones and write them all in the table below. Show your work. R (ohm) Calculated Selected/Measured R1 R2 R3
4. Draw the circuit diagram that you would use to demonstrate in the lab that your OpAmp circuit will provide an average of the two input voltages. Clearly label the value of the components or model of the components. 5. Now build your circuit and make enough measurements to demonstrate that your circuit operates correctly. Present you measurements below and write some analysis based on the data obtained.