Prelab14

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Feb 20, 2024

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1 Texas A & M University Pre-Lab Experiment 14 ESET 310-508 Contact: Caleb Sparks (729009916

2 Pre-Lab Experiment DC 14: Methods of Analysis Purpose: In this experiment, students will explore different methods of finding currents within a circuit. Students should be able to validate the branch-current-analysis technique using experimentation in this lab. The mesh-(loop-) analysis technique will also be validated in this lab through various experimentation. Finally, students will also determine the validity of the nodal-analysis technique using experimentation in this lab. The major goal of this lab is to familiarize students with the three different circuit analysis techniques mentioned previously. Materials: Resistors: 1 1-kΩ, 1.2-kΩ ¼-W film resistors 2 2.2-kΩ, 3.3-kΩ ¼-W film resistors Instruments: 2 DC Power Supply and 1 DMM (Digital Multimeter) Procedure: 1. Branch Current Analysis: Build the network shown in Fig 14.1 and record all measured resistor values. Make sure the dc supplies are connected to a common ground before turning on the power. Calculate current through each branch of the network using branch-current analysis, measured resistor values, and assumed current direction. Using a voltmeter, measure the voltages V1, V2, and V3 (Note polarity with a + or - sign). Using measured resistor values, calculate the currents I1, I2, and I3 (record direction of currents using + and - signs). Compare the measured and calculated current values using percent differences. Draw any necessary conclusions and record all data in the appropriate tables. 2. Mesh Analysis: Build the network shown in Fig 14.2 and record all measured resistor values. Make sure the dc supplies are connected to a common ground before turning on the power. Calculate the mesh currents I1 and I2 of the network using the recorded resistor values and provided directions. Find currents through each resistor of the circuit. Use a voltmeter to measure the voltages V1, V2, and V3 while making sure to note the polarity of each voltage. Using the measured voltages and resistor values, calculate the currents IR1, IR2, and IR3 (record direction of current using + and -). Determine how the measured and calculated value of IR1, IR2, and IR3 compare using percent differences. Draw any necessary conclusions and record all data in the appropriate tables. 3. Nodal Analysis: Build the network shown in Fig 14.3 and record all measured resistor values. Make sure the dc supplies are connected to a common ground before turning on the power. Find Va by using measured resistor values and nodal analysis. Use measured resistor values and Va to calculate the currents IR1 and IR3. Measure the voltage Va after energizing the network and compare it to the previously calculated value. Using the measured value of Va, calculate the currents IR1 and IR3. Compare the calculated and measured values of IR1 and IR3 by using percent differences. Draw any necessary conclusions and record all data in the appropriate tables.

3 4. Bridge Analysis: Build the network shown in Fig 14.4 and record all measured resistor values. Use one of the three techniques previously discussed to calculate the voltage V5 and current I5. Measure voltage V5 and note the polarity. Calculate the percent difference between the two values of V5 and the current I5 using both the measured values of V5 and R5. Calculate the percent difference between the measured and calculated values of I5. Draw any necessary conclusions and record all data in the appropriate tables.

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Related Questions

Q3 Please respond to question in attached image please. Thank you.

The circuit below shows a voltage source Vs with an output resistance Rout'. The source is used to power a load resistor ‘R₁'. If a voltmeter with an input resistance of 'Rin' is used to measure the load voltage 'VL', draw the equivalent circuit for this measurement system consisting of the voltage source, load and the voltmeter. If Rout = 5092 and Rin 10MQ, (a) express the voltage measured by the voltmeter (i.e., 'V₁') in terms of 'Vs', if RL = 10kQ (b) express the voltage measured by the voltmeter (i.e., 'V₁') in terms of 'Vs', if R₁ = 500ΚΩ Vs (+1) Rout www RL ww + VL

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Q3 Please respond to question in attached image please. Thank you.
The circuit below shows a voltage source Vs with an output resistance Rout'. The source is used to power a load resistor ‘R₁'. If a voltmeter with an input resistance of 'Rin' is used to measure the load voltage 'VL', draw the equivalent circuit for this measurement system consisting of the voltage source, load and the voltmeter. If Rout = 5092 and Rin 10MQ, (a) express the voltage measured by the voltmeter (i.e., 'V₁') in terms of 'Vs', if RL = 10kQ (b) express the voltage measured by the voltmeter (i.e., 'V₁') in terms of 'Vs', if R₁ = 500ΚΩ Vs (+1) Rout www RL ww + VL
Connect a thermistor (Resistance=500 – 1% per oc ) in a bridge (power supply =9V) with an instrumentation amplifier (IA ‘521), and an inverting amplifier, and design so that output =7V at 20 oc. Constraints: Use any value of resistors in the range 1 kilo ohm-100 kilo ohm

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