Lab 7.pdf

# Lab 7.pdf - Department of Computer and Electronics...

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Department of Computer and Electronics Engineering Technology CEET 1140 Lab 7 Title: Inductors, Time Constants and Frequency Response. Objective: The student will be able to construct an RL circuit and measure its time constant and its frequency response. Equipment: Function Generator Oscilloscope Proto Board Parts: 1 220 Resistor, ¼ watt 1 1000 µ H Inductor Preparation: Write the title and a short description of this lab in your lab book. Make sure the page is numbered and make an entry in the table of contents for this lab. Calculate the time constant, τ = L/R for the resistor-inductor network shown below: E1 is a voltage source that generates a square wave. Calculate its period, T, so that it is “high” for 5 τ and “low” for 5 τ . This period will insure that the voltage, V ab , will stabilize between each transition. Find the frequency, f, by computing f = 1/T. The governing equation for the current through an inductor in an RL circuit is i = i f – ( i f i i )e -t/ τ , where i i

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• Spring '14
• DaleC.Lake
• Alternating Current, Square wave, Oscilloscope, RL circuit, Sine wave

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