Download presentation

1
**Electrical Theory Quantity Symbol Unit Equation**

Charge Q coulomb Q = IIdt Current I ampere I = dQ/dt Voltage V volt V = dW/dQ Energy W joule W = IVdt = IPdt Power P watt P =dW/dt = IV Resistor R ohm V = IR Inductor L henry V = L dI/dt Capacitor C farad V = 1/C IIdt

2
**Electrical Theory Ohm’s Law I =V/R (DC) I = V/Z (AC) Kirchoff ’s Law**

Sum of Loop Voltages = 0 Sum of Node Currents = 0 Joule’s Law P = IE = I2R (I Squared R Loss)

3
**Current Flow Electron Flow - From excess to deficient**

Conventional Current Flow Internal to Source (Battery) Negative to Positive External from Source (Battery) Positive to Negative Voltage Drop - Across a Resistor + to - Negative Current - Assumed Direction Reversed

4
**Equivalent Circuits Thevenin Two Terminal Resistor and Battery Circuit**

Series Voltage Source and Equivalent Resistor Voltage Source = Open Circuit Voltage Equivalent Resistor = V / Short Circuit Current Norton Parallel Voltage Source and Equivalent Resistor Current Source = Short Circuit Current

5
**Series and Parallel Components**

Component Series Parallel R Req = R1 + R2 + R3 1/Req = 1/R1 + 1/R2 +1/R3 Z Zeq = Z1 +Z2 + Z3 1/Req = 1/Z1 + 1/Z2 + 1/Z3 l Leq = L1 + L2 + L3 1/Leq = 1/L1 + 1/L2 + 1/L3 C 1/Ceq = 1/C1 + 1/C2 + 1/C3 Ceq = C1 + C3 + C3

6
**DC Circuit Components Component Impedance Current Power Energy**

R R I = V/R None L Zero Infinite WL = 1/2 LI2 C Infinite Zero WC = 1/2 CV2

7
**AC Sinusoidal Analysis**

Resistor R I = V/R P = I2R = V2/R Inductor jXL= jwL I = -jVL/wL QL= I2XL = VL2/XL Capacitor -jXC= -j/wC I = jVCwC QC= I2XC = VC2/XC Current I = IR + j IX Voltage V = VR + j VX Complex Power S = VI* = (VR + j VX)(IR - j IX) Complex Power S = P + j Q

Similar presentations

OK

EE2010 Fundamentals of Electric Circuits Text Book: Introductory Circuit Analysis - Robert Boylestad.

EE2010 Fundamentals of Electric Circuits Text Book: Introductory Circuit Analysis - Robert Boylestad.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Odp to ppt online converter Ppt on isobars and isotopes of oxygen Ppt on road accidents in pakistan Ppt on biodegradable and non biodegradable ppt Ppt on project proposal writing Ppt on business environment nature concept and significance of the study Ppt on water resources class 10 download Ppt on internet services for class 10 Ppt on programmable logic arrays Download ppt on cloud computing technology