Lab 7 - Series-Parallel Circuits v3

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Algonquin College *

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9104

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Electrical Engineering

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Apr 3, 2024

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docx

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4

Uploaded by GrandRockGazelle46

ELN9104 Lab 7 – Series-Parallel Circuits Purpose: The purpose of this lab is to build and take measurements of series-parallel circuits and to understand how to troubleshoot more complex circuits. Materials The following resistors 2 x 1 kΩ, 2.2 kΩ, 2.7 kΩ, 5.6 kΩ and a 330 Ω resistors 1 LED 1 10 kΩ potentiometer Procedure: 1. Measure each resistor and record the measurements in Table 1. Table 1 Measured value Measured value R 1 : 1 kΩ 0.996 R 4 : 1 kΩ 0.994 R 2 : 2.2 kΩ 2.16 R 5 : 5.6 kΩ 5.46 R 3 : 2.7 kΩ 2.69 R 6 : 330 Ω 0.327 10 kΩ pot 10.1 Circuit 1 2. Build the circuit in Schematic 1 3. Calculate each of the values in Table 2. Use your measured values for each resistor for your calculations. 4. Draw an equivalent series circuit in the space provided above. 5. Measure each of the values in Table 2. Schematic 1 Equivalent series circuit C V S
ELN9104 Lab 7 Table 2 Step 3 calculated Step 5 measured Step 9 measured Step 11 measured R 2,3,4 1.2kΩ 2.19kΩ 0.999 kΩ 2.2 kΩ R 2,3,4,5 1.6 kΩ 1.57 kΩ 1 kΩ 2.2 kΩ R T 2.6 2.55 kΩ 1.79 kΩ 3.2 kΩ V S 12v 12V 12v 12v I T 4.62mA 4.65mA 6.4mA 3.59mA I 1 4.65mA 4.65mA 6.4mA 3.57mA I 2 1.8mA 1.48mA 0 2.2mA I 3 1.53mA 1.84mA 0 1.71mA I 4 4.92mA 3.33mA 5.4mA 3.7mA I 5 1.34mA 1.34mA 1mA 0 V 1 4.7v 4.70V 6.5v 3.7 v V 2,3 4.03v 4.03V 0 4.5v V 4 3.37v 3.35V 5.5v 3.7v V 5 7.39v 7.37V 5.5v 0 6. Choose 3 loops in the circuit and write the Kirchhoff’s Voltage Law (KVL) equations for each loop. Use your measured values for each equation. 7. Write the Kirchhoff’s Current Law (KCL) equations for node A and node B. Use your measured values for each equation. 8. Simulate a short in the circuit by placing a jumper wire between points A and B. What do you think will happen to I T ? Explain using calculations. R1 to R4 =12.0 v – Vs =0 R1 TO R5 =12 V -Vs =0 R2 TO R3 =12V – VS =0 KCL=I 2 -I 3 KCL=2.2-1.7 KCL=0.5 mA When we do R2 and R3 will cancel.
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