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REVIEW-KCL KVL NV ML &amp; Transforms

# REVIEW-KCL KVL NV ML &amp; Transforms - ENGR 210 REVIEW...

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THINGS YOU SHOULD KNOW ABOUT NODE VOLTAGE (Lectures 8 & 9) Assign voltages to each node and apply KCL at nodes where voltage is unknown. The problems are voltage sources. There are three ways to deal with them: 1. Ground one end of a voltage source. Doesn’t work with multiple sources unless they are connected to each other. 2. Transform a voltage source (with a series resistance) to a current source. 3. Define a supernode which encloses the voltage source and write a second equation which is simply the voltage difference between the nodes. ABOUT MESH CURRENT (Lectures 10 & 12) Write mesh currents and apply KVL around each loop. The problems are current sources. There are three ways to deal with them: 1. A current in an external loop is no problem. It becomes the mesh current. 2. Transform a current source (with a parallel resistance) to a voltage source. 3. Define a supermesh of two meshes which enclose the current source and write a second equation which is simply the current difference between the two meshes. PAGE NODE-VOLTAGE EXAMPLES 2-13 NODE-VOLTAGE SPECIAL CASES 7 SUPERNODE 12-13 MESH-CURRENT EXAMPLES 15-22 MESH-CURRENT SPECIAL CASES 17 SUPERMESH 21-22 SOURCE TRANSFORMATIONS 23-27 ENGR 210 REVIEW Node-Voltage & Mesh-Current Page 1

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