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Published byBella Cartledge Modified over 3 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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