Mtodo De Nodos

  • June 2020
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A áli i de Análisis d Ci Circuitos it Elé Eléctricos t i

Dr. Rodolfo A. Echavarría Solís Universidad Politécnica de Victoria

Análisis de circuitos por el método de nodos Nodal Analysis y

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Procedure: 1. Select one node as reference 2. Assign a voltage variable to each remaining node 3 Apply KCL at each non 3. non-reference reference node 4. Solve the resulting set of simultaneous equations

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Grounding • Anyy SINGLE node in a circuit can be g grounded without impact on the performance of the circuit. • Connecting one node of a circuit to ground provides a Zero Voltage reference at that point • Symbols for the Ground Plane:

S.Norr - UMD - Fall, 2006

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Example of Nodal Analysis

• Assign A i a reference f node d

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Example of Nodal Analysis • Assign a voltage to all other nodes:

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Example of Nodal Analysis • Write KCL at one or more nodes: i1 + i2 + i3 = 0

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Example of Nodal Analysis • Re-write the currents using g Ohm’s law: i1 = (Va - 5)/2 ; i2 = (Va + 3)/4 ; i3 = (Va – 0)/8 • Substitute: ((Va - 5)/ 5)/2 + ((Va + 3)/4 + (Va ( – 0)/8 )/ = 0 Va = 2 Volts

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

Método de nodos Example of Nodal Analysis • Use the Resulting g Node Voltages g to Solve for Currents: i1 = (Va - 5)/2 = (2 - 5)/2 = - 1.5 Amp i2 = (Va + 3)/4 = (2 + 3)/4 = 1.25 Amp i3 = (Va – 0)/8 = (2 – 0)/8 = 0.25 Amp

Análisis de Circuitos Eléctricos

Dr. Rodolfo A. Echavarría Solís

A áli i de Análisis d Ci Circuitos it Elé Eléctricos t i

Dr. Rodolfo A. Echavarría Solís Universidad Politécnica de Victoria

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