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Published byBella Cartledge Modified over 2 years ago

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RESISTIVE CIRCUITS SINGLE NODE-PAIR CIRCUIT ANALYSIS

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SINGLE NODE-PAIR CIRCUITS THESE CIRCUITS ARE CHARACTERIZED BY ALL THE ELMENTS HAVING THE SAME VOLTAGE ACROSS THEM - THEY ARE IN PARALLEL THIS ELEMENT IS INACTVE (SHORT-CIRCUITED) IN PRACTICE NODES MAY ASSUME STRANGE FORMS LOW DISTORTION POWER AMPLIFIER

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COMPONENT SIDECONNECTION SIDE LOW VOLTAGE POWER SUPPLY FOR CRT - PARTIAL VIEW SAMPLE PHYSICAL NODES

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BASIC CURRENT DIVIDER THE CURRENT i(t) ENTERS THE NODE AND SPLITS - IT IS DIVIDED BETWEEN THE CURRENTS i1(t) AND i2(t) APPLY KCL USE OHM’S LAW TO REPLACE CURRENTS DEFINE “PARALLEL RESISTANCE COMBINATION”THE CURRENT DIVISION

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WHEN IN DOUBT… REDRAW THE CIRCUIT TO HIGHLIGHT ELECTRICAL CONNECTIONS!! IS EASIER TO SEE THE DIVIDER

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LEARNING EXTENSION - CURRENT DIVIDER CAR STEREO AND CIRCUIT MODEL POWER PER SPEAKER THERE IS MORE THAN ONE OPTION TO COMPUTE I2

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FIRST GENERALIZATION: MULTIPLE SOURCES APPLY KCL TO THIS NODEDEFINE “PARALLEL RESISTANCE COMBINATION”

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APPLY KCL TO THIS NODE SECOND GENERALIZATION: MULTIPLE RESISTORS General current divider Ohm’s Law at every resistor

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20k||5k General current divider

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FIND THE CURRENT COMBINE THE SOURCES COMBINE RESISTORS STRATEGY: CONVERT THE PROBLEM INTO A BASIC CURRENT DIVIDER BY COMBINING SOURCES AND RESISTORS. THE NEXT SECTION EXPLORES IN MORE DETAIL THE IDEA OF COMBINING RESISTORS NOTICE THE MINUS SIGN

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9mA I1 I2 I1 I2 I1 I2 DIFFERENT LOOKS FOR THE SAME ELECTRIC CIRCUIT

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I1I2 I1 I2 REDRAWING A CIRCUIT MAY, SOMETIMES, HELP TO VISUALIZE BETTER THE ELECTRICAL CONNECTIONS

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Determine power delivered by source +V_+V_

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Chapter 19 DC Circuits. Objective of the Lecture Explain Kirchhoff’s Current and Voltage Laws. Demonstrate how these laws can be used to find currents.

Chapter 19 DC Circuits. Objective of the Lecture Explain Kirchhoff’s Current and Voltage Laws. Demonstrate how these laws can be used to find currents.

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