EE 302 - Lecture Slides - Unit_2[1].5___Series_and_Parallel_Circuits

# EE 302 - Lecture Slides - Unit_2[1].5___Series_and_Parallel_Circuits

This preview shows pages 1–16. Sign up to view the full content.

Unit 2: Basic Circuit Theory Unit 2.5: Series and Parallel Circuits

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Learning Objectives Series Circuits Voltage sources Resistors Parallel Circuits Current Sources Resistors How do series circuits divide voltage How do parallel circuits divide current
Review Ohm’s Law : V = IR or I = V/R Kirchhoff’s Voltage Law : An algebraic sum of all the voltages around a closed path (or loop) is zero. Sum of voltage drops = Sum of voltage rises Kirchhoff’s Current Law : An algebraic sum of the currents entering a node is zero. Sum of currents entering a node = Sum of currents leaving a node.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Series Circuits Same current flows through them ( which law dictates that ? ) 1 2
Series Circuits (Contd.) Req = ∑ R n Series circuits are voltage dividers To determine the voltage across the Nth resistor use the principle of voltage division. N N eq

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Parallel Circuits Share a common pair of nodes. Same voltage across parallel elements. (which law dictates that?) Applying KVL for each loop: v = i1 X R1 = i2 X R2 i = i1 + i2 i = v/R1 + v/R2 = v/Req => 1/Req = 1/R1 + 1/R2
Parallel Circuits (Contd.) For N resistors in parallel: 1 2 3 N

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Parallel Circuits (Contd.) Parallel circuits are current dividers th

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Practice Problem Determine Req for the following circuit:
Practice Problem Find V1, V2, V3 in the circuit.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Practice Problem Find I, v, and the power dissipated in the 6 Ω resistor.
Practice Problem Find i1 and i2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Practice Problem Find R if Vo = 4V
Equivalent Circuits An Equivalent Circuit is a simple circuit that reproduces

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 03/22/2008 for the course EE 302 taught by Professor Mccann during the Fall '06 term at University of Texas at Austin.

### Page1 / 37

EE 302 - Lecture Slides - Unit_2[1].5___Series_and_Parallel_Circuits

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online