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Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6

Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6. ENG17 (Sec. 2): Circuits I Summer 1 2014. June 23, 2014. Overview. Personal Introduction Course Introduction Units Circuit Analysis Voltage / Current Basic Circuit Element Power / Energy. Dr. Kyle Montgomery.

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Lecture 1: Intro & Circuit Variables Nilsson 1.1-1.6

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  1. Lecture 1:Intro & Circuit VariablesNilsson 1.1-1.6 ENG17 (Sec. 2): Circuits I Summer 1 2014 June 23, 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 • This class…life…stuff is hard let’s talk about it

  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 • Lu Cai • Matt Chun • Nimit Patel • 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 Voltage (v) Current (i) Charge (q) 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

  30. Recap • Personal Introduction • Course Introduction • Units • Circuit Analysis • Voltage / Current • Basic Circuit Element • Power / Energy

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