ECET 2310 Laboratory Exercise 12: First Order Active Filter Circuits, Lab Reports of Electronics

Download ECET 2310 Laboratory Exercise 12: First Order Active Filter Circuits and more Lab Reports Electronics in PDF only on Docsity! ECET 2310 (Electronics II) Laboratory Exercise 12 First Order Active Filter Circuits Prelab: 1. Derive the transfer function for each of the circuits shown on the second page in terms of the resistor symbols, capacitor symbol(s), and jω (or s). Simplify each transfer function into a standard form. (Show all steps in your derivation/simplification.) 2. Determine the expressions for the passband gain (in the case of Circuit D, the level region(s) in magnitude response) and the corner frequencies for each circuit in terms of the appropriate resistor and/or capacitor symbols. . 3. Using the specified resistor and/or capacitor values, evaluate the passband gain (in dB) and the corner frequencies (in Hz) for each circuit 4. Sketch the straight-line plot of the magnitude of vo/vi (in dB) versus frequency (in Hz) for each circuit. Label significant magnitudes, frequencies, and slopes. 5. Utilize PSpice Windows version to print the schematic of each active filter circuit. Use the uA741 for the op-amp in your software model. 6. Utilize PSpice Windows version to print the AC analysis curve which plots the magnitude of vo/vi (in dB) versus frequency (in Hz) for each active filter circuit from 10 Hz to 100 kHz. Laboratory Procedures: 1. Construct each active filter circuit. Utilizing the function generator and the oscilloscope, check that each active filter circuit achieves the appropriate passband gain and corner frequency specifications. 2. Utilize the CAT (Computer Aided Testing) system to plot the magnitude response of vo/vi (in dB) versus frequency (in Hz) for each constructed active filter circuit from 10 Hz to 100 kHz. In order to obtain an accurate plot from the CAT system choose at least 100 data points. 3. Explain why the CAT and PSpice plots of magnitude versus frequency for circuits B and D roll off in the high frequency regions. 4. Compare the calculated passband gain and corner frequency specifications with the measured passband gain and corner frequency specifications for each circuit. List the dominant sources of error. (revised 5/19/00 - WRH)