ECEN 214 Lab 3

ECEN 214 Lab 3 - short circuit shown in figure 3.10 of the...

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A. Procedure: In Task 1, the main objectives were to measure the voltage across the load and the current flowing through the load in order to verify Thevenin’s equivalent. To do this, the NI ELVIS and Digitial Multi-meter were used. After setting up variable power supplies (Voltage +:HI, Voltage -:LOW), the DMM was set as close to 10 volts as possible. Then, the circuit pictured in Figure 3.8 of the lab was constructed. Using the HP DMM and the Digital Multi-meter, the current and the voltage of the load, I_L and V_L, respectively, was measured and recorded. For part II, V_OC was measured and recorded by initially removing the 2k resistor and creating an open circuit. For part III, the objective was to measure the current flowing, I_SC, after creating a short circuit. After creating the
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Unformatted text preview: short circuit shown in figure 3.10 of the lab, the HP DMM was used to measure and record I_SC. Lastly, the total equivalent resistance was calculated using the equation R_EQ=(V_OC)/(I_SC). B. Data Tables w/ results: Parameter Measured Calculated % Difference I_L 0.00127 A 0.00132 A 3.79% V_L 2.635 V 2.6347 V 0.01% V_OC 5.483 V I_SC 0.0025 A R_EQ 2193.2 Ω C. Sample Calculations: Equivalent Resistance: R_EQ = V_OC/I_SC R_EQ = 5.483 V/0.0025 A R_EQ = 2193.2 Ω Thevenin resistance: R_TH= (1 k Ω ||5.1 k Ω )+(1 k Ω ||3.3 k Ω )+1k Ω R_TH= 836 Ω + 767 Ω + 1000 Ω = 2603 Ω = 2.6k Ω D. Discussion: E. Conclusion...
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This note was uploaded on 10/05/2011 for the course THAR 281 taught by Professor Staff during the Fall '07 term at Texas A&M.

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