FormalReport-1

# FormalReport-1 - Lab 10 Formal Lab Report Identifying a...

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Lab 10: Formal Lab Report Identifying a Mystery Component Tridib K. Saha ECE Department Purdue University Station no: 7 Date: 07/18/2010 ABSTRACT The goal of this experiment is to design, build, test and demonstrate a test set-up (a circuit on a breadboard) to identify two mystery components named A and B. Specifications were provided that the mystery components would be comprised of an inductor in series with a resistor or a capacitor in parallel with a resistor.

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With the help of Oscilloscope, Function generator, Digital multi-meter (DMM) and an external resistor, a test circuit was setup to measure the capacitance and resistance of a known capacitor in parallel with a known resistor, and the inductance and resistance of a known inductor in series with a known resistor. This test circuit was then used to find out what component was originally inside the two mystery boxes. The values of the known resistors, the capacitor and the inductor found from the DMM and the test circuit was consistent with the known value with an accuracy of 10%. The Mystery box-A consisted of an inductor of 5.21mH in series with a resistor of 337 ohms. While Mystery box-B consisted of a capacitor of 0.12 microfarad in parallel to a resistor of 337 ohms. The built test circuit can identify the values of inductor, capacitor and resistor combination with 10% accuracy. INTRODUCTION The experiment is to determine the mystery components in Box A and Box B. The mystery components would be comprised of an inductor in series with a resistor or a capacitor in parallel with a resistor. To solve this, known components from the CK-1 kit was taken and a test-circuit was built using the DMM, Oscilloscope, and Function Generator. The DMM was used to measure the resistance of the resistor, the function generator was used to provide a square wave signal through the components, and the
oscilloscope was used to get the signal on a graphical plot to determine the time constant from which the capacitance or the inductance was found out.

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