In this design the manual switch will simulate the

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Unformatted text preview: ugh (until it is less than 7 mA), move the switch to the up position (1). Measure the inductor current iL and voltage vL. After the switch has been in the up position (1) long enough for inductor current to stabilize (be constant), measure and record the inductor current iL and voltage vL. Now move the switch to the down position and record the value of iL every 15 seconds for three minutes. Time 0 15 30 45 60 75 90 105 120 135 150 165 180 (Sec) iL • • • • Graph the current values. Characterize the graph  ­ is it linear, quadratic, or exponential? Determine the circuit time constant from the graph. Determine the inductance of the simulated inductor from the time constant, the resistors in the circuit, and the internal resistance of the inductor measured in step 2.b (iii). Procedure 3: Design with Time Constants (40 points) Many systems are designed to have actions occur after a time delay. Consider a car alarm, for example, that senses motion by closing a switch. If the alarm goes off the instant th...
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This note was uploaded on 11/12/2012 for the course EE 215 taught by Professor Davis during the Spring '12 term at University of West Georgia.

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