Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6
30
Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6 ENG17 (Sec. 2): Circuits I Spring 2014 1 April 1, 2014
description
Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6. ENG17 (Sec. 2): Circuits I Spring 2014. April 1, 2014. Overview. Personal Introduction Course Introduction Units Circuit Analysis Voltage & Current Basic Circuit Element Power & Energy. Dr. Kyle Montgomery. - PowerPoint PPT Presentation
Transcript of Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6
1
Lecture 1:Intro & Circuit VariablesNilsson 1.1-1.6
ENG17 (Sec. 2): Circuits I
Spring 2014
April 1, 2014
2
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
3
Dr. Kyle Montgomery
• B.S. 2004 University of Houston• 3 years @ Schlumberger• M.S. 2008 Purdue University• Ph.D. 2012 Purdue University
– Thesis: Novel Approaches for Wide Bandgap Solar Cells
4
What I do now…besides teach…
• Advise students• Research
– Novel solar cells w/compound semiconductors
– New materials for lighting, solar cells, and beyond
– High speed, high power transistors– Alternative energy storage solutions
5
Philosophy…on teaching…and life
• Teaching is not confined to classroom time• Conceptual understanding is key• Life really sucks sometimes…how can I
help?
6
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
7
ENG17: Circuits 1
• Electrical quantities and elements• Resistive Circuits• Transient and steady-state responses of
RLC circuits• Sinusoidal excitation and phasors• Complex frequency and network functions• Power Calculations
8
Course Structure
• TAs– Yuhao Liu (sub: Akash Anand)– Lu Cai– Chi Van Pham– Wu Yu– Xin Zhao
• Course Website is:– http://www.kmontgomery.net/eng17
• Smartsite used primarily for grades• Also using Piazza
9
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
10
SI Units
11
Derived Units
12
Prefixes
13
Examples
14
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
15
Big Picture
• Need justifies design
• Design specs filter to concept, circuit model, prototype
• Circuit analysis necessary for foundation
16
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
17
Test Charge in a Field
18
Work & Energy
19
Electric Potential Energy
20
Voltage
21
Atom & Conductor in a Field
22
Current
23
Ohm’s Law
24
Water Analogy
• Water pressure = voltage• Water flow = current
25
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
26
Ideal Element
• Passive sign convention
27
Fundamental Quantities
1.Voltage (v)2.Current (i)3.Charge (q)4.Flux (Φ)
28
Overview
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
29
Power ≠ Energy
• Power = Time Derivative of Energy• UNITS!
– Power in Watts– Energy in Watt-hrs or Joules
• Positive Power = Power Delivered to Circuit
• Negative Power = Power Extracted from Circuit
𝑝=𝑑𝑤𝑑𝑡
𝑝=𝑖𝑣
30
Recap
• Personal Introduction• Course Introduction• Units• Circuit Analysis• Voltage & Current• Basic Circuit Element• Power & Energy
