1 EEE202: Hardware Lab #2 NODE VOLTAGE METHOD OBJECTIVE:This experiment is designed to test the node-voltage method of circuit analysis. The results measured in lab are compared with PSpice and MATLAB simulations. INTRODUCTION: There are two powerful techniques for analyzing circuits: the node-voltage and mesh-current methods. Because of the importance of the node-voltage method, it will be presented here in great detail, including a discussion of supernodes and dependent sources; however, neither supernodes nor dependent sources occur in this experiment’s circuit.A.Overview of the Node-Voltage Method:The node-voltage method is based on Kirchhoff’s Current Law (KCL): the sum of the currents at each node in a circuit is zero. By summing the currents at each essential node, it is possible to determine the relative voltage differences between these nodes. (An essential node is a node where three or more elements connect.) Once these node voltages are known, the entire circuit is basically solved since it is trivial to solve for any of the other voltages or currents in the circuit. Because voltage is a measure of the energy difference between two points in a circuit, one of the essential nodes is chosen as the reference node (called ground) and all other voltages are measured with respect to it. (The reference node’s voltage is zero.) As an example, consider the circuit shown in Figure 2.1. Once the voltage of the top essential node, 1V, is known with respect to the voltage at the ground node, it is trivial to solve for any of the other voltages or currents in the circuit. Figure 2.1: Example Node-Voltage Circuit.