Filter_lab - Name: Date of lab: _ Lab 6 _ Section number: M...

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Name: ______________________________________________ Date of lab: ______________________ Section number: M E 345._______ Lab 6 Precalculations – Individual Portion Filter Lab: Building and Testing Electrical Filters Precalculations Score (for instructor or TA use only): _____ / 20 1. Draw the circuit diagram for a simple first-order low-pass filter, constructed from one resistor and one capacitor. Be sure to label both the input and output voltages. 2. Draw the circuit diagram for a simple first-order high-pass filter, constructed from one resistor and one capacitor. Be sure to label both the input and output voltages. 3. Suppose a capacitor is available with a capacitance of 0.0100 microfarads. A low-pass filter is to be constructed with a cutoff frequency around 800 Hz. Calculate the appropriate resistance of the resistor that should be used, in units of k Ω . Show all your calculations, and be sure to include all units . Required resistance, R = ___________ k Ω 4. Suppose that you need a resistance of 15 k Ω , but all you have available is a bunch of 10 k Ω resistors. Draw a schematic diagram showing how could use only 3 resistors to generate the desired resistance. 5. Instruments are commercially available that contain Butterworth low-pass filters of various orders (for example n = 1, 2, 4, 6, and 8). Suppose you are using one of these instruments, and have it set to a cutoff frequency of 800 Hz. Compare the gain (both G and G dB ) at a frequency of 10,000 Hz for the cases with n = 1, n = 2, and n = 4. nG G dB 1 2 4
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Cover Page for Lab 6 Lab Report – Group Portion Filter Lab: Building and Testing Electrical Filters Name 1: ___________________________________________________ Section M E 345._______ Name 2: ___________________________________________________ Section M E 345._______ Name 3: ___________________________________________________ Section M E 345._______ [Name 4: ___________________________________________________ Section M E 345._______ ] Date when the lab was performed: ______________________ Group Lab Report Score (For instructor or TA use only) : Lab experiment and results, plots, tables, etc. _____ / 50 Discussion _____ / 20 Neatness & grammar _____ / 10 TOTAL ______ / 80 Comments (For instructor or TA use only) : NOTE: The instructor or TA reserves the right to deduct points for any of the following: Arriving late to lab or leaving before your lab group is finished. Not participating in the work of your lab group (freeloading). Causing distractions, arguing, or not paying attention during lab. Other (at the discretion of the instructor or TA).
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Filter Lab: Building and Testing Electrical Filters Author: John M. Cimbala, Penn State University Latest revision: 25 July 2007 Introduction and Background ( Note : To save paper, you do not need to print this section for your lab report.) This lab involves building some electrical circuits on a breadboard. To refresh your memory, the circuit for two resistors in series is shown below. One way to wire these on a breadboard is also sketched below. V A V B R 1 I 1 R 2 I 2 V A R 1 R 2 Short bus V B Similarly, the circuit for two resistors in parallel is shown below, along with one way to wire these on a breadboard.
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This note was uploaded on 07/23/2008 for the course ME 345 taught by Professor Staff during the Spring '08 term at Pennsylvania State University, University Park.

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Filter_lab - Name: Date of lab: _ Lab 6 _ Section number: M...

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