Fundamentals of Electric Circuits
BASIC CONCEPTS SYSTEMS OF UNITS: SI
The six basic SI units
The SI prefixes
CHARGE AND CURRENT
DC vs. AC Current
VOLTAGE Energy to move a unit charge
POWER AND ENERGY
Passive Sign Convention
BASIC LAWS
OHM’S LAW
Conductance
NODES, BRANCHES, AND LOOPS
KIRCHHOFF’S LAWS Kirchhoff’s current law (KCL) states that the algebraic sum of currents entering a node (or a closed boundary) is zero
KIRCHHOFF’S LAWS
KIRCHHOFF’S LAWS Kirchhoff’s voltage law (KVL) states that the algebraic sum of all voltages around a closed path(or loop) is zero
KIRCHHOFF’S LAWS
SERIES RESISTORS
SERIES RESISTORS
SERIES RESISTORS
VOLTAGE DIVISION
VOLTAGE DIVISION
PARALLEL RESISTORS
PARALLEL RESISTORS
PARALLEL RESISTORS
PARALLEL RESISTORS
CURRENT DIVISION
CURRENT DIVISION
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
WYE-DELTA TRANSFORMATIONS
SUPERPOSITION For Linear Systems:
SUPERPOSITION
SOURCE TRANSFORMATION
THEVENIN’S THEOREM ? ?
THEVENIN’S THEOREM
THEVENIN’S THEOREM
NORTON’S THEOREM
NORTON’S THEOREM
NORTON’S THEOREM
SOURCE TRANSFORMATION
CAPACITORS AND INDUCTORS
CAPACITORS
CAPACITORS
CAPACITORS
CAPACITORS
CAPACITORS The voltage on a capacitor cannot change abruptly A capacitor is an open circuit to dc
SERIES CAPACITORS
PARALLEL CAPACITORS
INDUCTORS µ ≡ Permiability
INDUCTORS
The current through an inductor cannot change instantaneously INDUCTORS The current through an inductor cannot change instantaneously An inductor acts like a short circuit to dc
SERIES INDUCTORS
PARALLEL INDUCTORS
IMPORTANT CHARACTERISTICS
Characterized by A First-order Differential Equation FIRST-ORDER CIRCUITS Characterized by A First-order Differential Equation
FIRST-ORDER CIRCUITS THE SOURCE-FREE RC CIRCUIT
FIRST-ORDER CIRCUITS THE SOURCE-FREE RC CIRCUIT
FIRST-ORDER CIRCUITS STEP RESPONSE OF AN RC CIRCUIT
FIRST-ORDER CIRCUITS STEP RESPONSE OF AN RC CIRCUIT
FIRST-ORDER CIRCUITS THE SOURCE-FREE RL CIRCUIT
STEP RESPONSE OF AN RL CIRCUIT
STEP RESPONSE OF AN RL CIRCUIT
STEP RESPONSE OF AN RL CIRCUIT