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Lab 7 Worksheet Revision: June 28, 2010 I. 215 E Main Suite D | Pullman, WA 99163 (509) 334 6306 Voice and Fax Passive RC Circuit Step Response (50 pts total) a. Capacitor voltage measurement (15 pts) i. In the space below, provide a circuit schematic with measured resistor values. Also provide your estimated time constant and steady state response from the pre-lab (3 pts) ii. Measured time constant and steady-state response. (3 points) iii. Attach, to this worksheet, a plot of your measured input and output data. Annotate the plot to show your calculation of the time constant and steady-state response. (4 pts) iv. DEMO: Have a teaching assistant initial this sheet, indicating that they have observed your circuits’ operation. (5 pts) Doc: XXX-YYY page 1 of 6 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. Lab 7 Worksheet I. Passive RC Circuit Step Response (continued) b. Resistor voltage measurement (20 pts) i. Provide below your estimated time constant and steady state response from the pre-lab. (3) pts ii. Measured time constant and steady-state response. (3 points) iii. Attach, to this worksheet, a plot of your measured input and output data. Annotate the plot to show your calculation of the time constant and steady-state response. (4 pts) iv. Comment on your assessment as to whether the measured voltage and capacitor voltages sum to the input voltage. (5 pts) v. DEMO: Have a teaching assistant initial this sheet, indicating that they have observed your circuits’ operation. (5 pts) www.digilentinc.com page 2 of 6 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. Lab 7 Worksheet I. Passive RC Circuit Step Response (continued) c. Loaded circuit response. (15 pts) i. In the space below, provide a circuit schematic with measured resistor values (both the RC circuit resistance and the load resistance). (3 pts) ii. Attach, to this worksheet, a plot of your measured input and output data. Annotate the plot to show the time constant and steady-state response. (3 pts) iii. Comment below on the differences between the loaded and unloaded circuit responses. Do the results of the loaded circuit agree with your expectations based on analysis? (5 pts) iv. DEMO: Have a teaching assistant initial this sheet, indicating that they have observed your circuits’ operation. (4 pts) www.digilentinc.com page 3 of 6 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. Lab 7 Worksheet II. Active RC Circuit Step Response (50 pts total) (a) Capacitor voltage measurement (15 pts) 1. Provide below a schematic of the circuit and measured resistance values. (3 pts) 2. Provide below your estimates of the time constant and steady state response estimates (3) pts 3. Attach, to this worksheet, a plot of your measured input and output data. Annotate the plot to show the time constant and steady-state response. (3 pts) 4. In the space below, provide a discussion comparing the response of the active RC circuit with the passive RC circuit of part I. (4 pts). www.digilentinc.com page 4 of 6 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. Lab 7 Worksheet II. Active RC Circuit Step Response (continued) (b) Circuit response vs. input voltage frequency (20 pts) 1. Provide below a table of input and output voltage amplitudes and frequencies (5) pts 2. Discuss your observations relative to peak-to-peak input and output voltage amplitudes vs. frequency and comment on possible reasons for these trends. (5 pts). 3. DEMO: Have a teaching assistant initial this sheet, indicating that they have observed your circuits’ operation. (5 pts) www.digilentinc.com page 5 of 6 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. Lab 7 Worksheet II. Active RC Circuit Step Response (continued) (c) Loaded circuit response (15 pts) 1. Provide below a schematic of the loaded active RC circuit and measured resistance values. (3) pts 2. Provide your estimates of the active RC circuit time constant and steady-state response. (3 pts) 3. Compare the response of the loaded active RC circuit with both the loaded and unloaded passive RC circuit. Discuss your observations. (5 pts). 4. DEMO: Have a teaching assistant initial this sheet, indicating that they have observed your circuits’ operation. (4 pts) www.digilentinc.com page 6 of 6 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.