Introduction to Electrical & Computer Engineering Circuit Representation 1 Dr. Cynthia Furse University of Utah.

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Presentation transcript:

Introduction to Electrical & Computer Engineering Circuit Representation 1 Dr. Cynthia Furse University of Utah

Introduction to Electrical Engineering Circuit Representation Voltage, Current, Resistance Ground / Reference / Neutral Variable Resistors / Resistive Sensors Measuring V,I,R Series & Parallel elements Node, Path, Loop 2

V DC V + - V V I I I Voltage (DC)

V ref(erence) = 0V = ground V ref(erence) = 0V = ground Ground / Reference / Neutral

+ - V V AC ̴ V + Voltage (AC)

R (Ω) Resistor

R (Ω) Variable Resistor / Resistive Sensor

Resistance Standard Resistor Values Variable resistor a)Potentiometer: 3-terminal variable resistor. Rheostat: 2-terminal variable resistor Resistive Sensor – Temperature – Thermister – Pressure – Piezoresistor – Light intensity – Light-dependent R (LDR) 8

+ - VΩ com A V DC V AC RMS ̴ DVM DC voltmeter AC (RMS) voltmeter Measuring Voltage (Voltmeter) DVM = Digital VoltMeter

VΩ com A Ω Ohm meter Measuring Resistance (Ohmeter)

+ - VΩ com A ̴ I DC I AC RMS DC ammeter AC RMS ammeter Measuring Current (Ammeter)

Circuit Representation All rights reserved. Reproduced with permission © 2016 National Technology and Science Press

Common Circuit Elements All rights reserved. Reproduced with Permission © 2016 National Technology and Science Press

Circuit Topology Branch: single element, such as a resistor or source Node: connection point between two or more branches Extraordinary Node: connection point between at least 3 branches Loop: closed path in a circuit node branch loop All rights reserved. Reproduced with Permission. © 2016 National Technology and Science Press

Terminology All rights reserved. Do not reproduce or distribute. © 2016 National Technology and Science Press

Circuit Diagram 16 Picture From: Wikipedia

Series & Parallel 17

Series: CURRENT is the same 18

Parallel: VOLTAGE is the same 19

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Wheatstone Bridge Tune Rv until V= 0 Ru = (R2/R1) Rv 21 V

Series / Parallel Battery Charging ng-batteries-chargers.htm 22

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Conclusion: Circuit Representation 30 Voltage, Current, Resistance Variable Resistors / Resistive Sensors Measuring V,I,R Series & Parallel elements Node, Path, loop

Introduction to Electrical & Computer Engineering Circuit Representation 31 Dr. Cynthia Furse University of Utah Peekaboo Slot Canyon Near Kanab, Utah

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