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3 Pages

### thevenin

Course: EE 201, Fall 2009
School: Iowa State
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Word Count: 376

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EE 201 Lab Fall 2007 &lt;a href=&quot;/keyword/thevenin-equivalent/&quot; &gt;thevenin equivalent&lt;/a&gt; circuits This week we will examine &lt;a href=&quot;/keyword/thevenin-equivalent/&quot; &gt;thevenin equivalent&lt;/a&gt; circuits by measuring and calculating the &lt;a href=&quot;/keyword/thevenin-equivalent/&quot; &gt;thevenin...

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EE 201 Lab Fall 2007 <a href="/keyword/thevenin-equivalent/" >thevenin equivalent</a> circuits This week we will examine <a href="/keyword/thevenin-equivalent/" >thevenin equivalent</a> circuits by measuring and calculating the <a href="/keyword/thevenin-equivalent/" >thevenin equivalent</a> s of two simple resistive circuits. For each of the circuits shown on the second page, follow the procedure outlined below to find and test the <a href="/keyword/thevenin-equivalent/" >thevenin equivalent</a> s. a. Build the circuit as shown. Measure the power being delivered to the load resistor (RL in the circuit) by measuring the load voltage and load current. b. Find the Thevenin voltage. Remove the load resistor and use the voltmeter to measure the open-circuit voltage between the two output nodes (i.e. the nodes where RL was previously attached). c. Find the Thevenin resistance. Remove the voltage source and replace it with a short circuit. Measure the resistance between the two output nodes using the ohm-meter. Note that this is essentially implementing the test generator method of finding the Thevenin resistance, since the ohm-meter determines resistance by applying a small voltage and measuring the resulting current. Further note that using the ohm-meter to find Thevenin resistance only works when the circuit is purely resistive. It will not work if there are capacitors, inductors, or non-linear devices in the circuit. Obviously, this is not an issue now, but it will be later. d. Build the <a href="/keyword/thevenin-equivalent/" >thevenin equivalent</a> circuit using a voltage source and potentiometer. Set the voltage to the value measured in part (a) above. Adjust the potentiometer to have the value measured in part (b). Attach the load resistor to the equivalent circuit and measure the load voltage and current. Compare the results the measurements from part (a). e. Find it analytically. Now use circuit analysis to calculate the values for the <a href="/keyword/thevenin-equivalent/" >thevenin equivalent</a> circui...

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Iowa State - EE - 201
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