EE 210: Circuits Spring 2016

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1 EE 210: Circuits Spring 2016

2 Overview of EE Why take a course on circuits? 2. Course text 3. Course syllabus 4. Course schedule 5. Start Chapter 1

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9 EE 210 in a Nutshell 1. Learn rules for individual components 2. Learn rules for interactions between components 3. Use rules to analyze existing circuits 4. Use rules to design new circuits

10 The Components 1. Power sources 2. Resistors 3. Inductors 4. Capacitors 5. Amplifiers

11 The Rules 1. Ohm s law 2. Series and parallel connections 3. Kirchoff s voltage law 4. Kirchoff s current law 5. Thevenin s and Norton s theorems 6. Superposition

12 Overview of EE Why take a course on electrical science? 2. Course text 3. Course syllabus 4. Course schedule 5. Start Chapter 1

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16 Overview of EE Why take a course on electrical science? 2. Course text 3. Course syllabus 4. Course schedule 5. Start Chapter 1

17 Overview of EE Why take a course on electrical science? 2. Course text 3. Course syllabus 4. Course schedule 5. Start Chapter 1

18 January 2017 Sunday Monday Tuesday Wednesday Thursday Friday Saturday New Year's Day New Year's Day (observed) Martin Luther King Day

19 February 2017 Sunday Monday Tuesday Wednesday Thursday Friday Saturday Presidents' Day

20 March 2017 Sunday Monday Tuesday Wednesday Thursday Friday Saturday

21 April 2017 Sunday Monday Tuesday Wednesday Thursday Friday Saturday Review 28

22 Overview of EE Why take a course on electrical science? 2. Course text 3. Course syllabus 4. Course schedule 5. Start Chapter 1

23 Chapter 1: Basic Concepts 1. Voltage, current, and power 2. Ideal power sources 3. Resistors

24 Chapter 1: Basic Concepts 1. Voltage, current, and power 2. Ideal power sources 3. Resistors

25 Water Electricity/Water Analogy Water flows well through conduits: river banks, pipes. Reference:

26 Water Electricity/Water Analogy Water flows well through conduits: river banks, pipes. Reference:

27 Electricity/Water Analogy Water Electricity Water flows well through conduits: river banks, pipes. Reference:

28 Electricity/Water Analogy Water Electricity Water flows well through conduits: river banks, pipes. Electricity flows well through metal conductors. Reference:

29 Electricity/Water Analogy Water Electricity High banks prevent floods. Reference:

30 Electricity/Water Analogy Water Electricity High banks prevent floods. Reference:

31 Electricity/Water Analogy Water Electricity High banks prevent floods. Good insulators prevent shocks. Reference:

32 Electricity/Water Analogy: Voltage Low potential High potential

33 Electricity/Water Analogy: Voltage Low potential High potential

34 Electricity/Water Analogy: Voltage Low potential High potential

35 Electricity/Water Analogy: Voltage Low potential High potential 1.5 V 9 V

36 Electricity/Water Analogy: Voltage Low potential High potential 1.5 V 9 V

37 Electricity/Water Analogy: Voltage Low potential High potential 1.5 V 9 V

38 Electricity/Water Analogy: Voltage Low potential High potential Voltage is electric potential energy per unit charge: 1 V = 1 J/C 1.5 V 9 V

39 Electricity/Water Analogy: Voltage Low potential High potential

40 Amount of work produced depends on relative height

41 Amount of work produced depends on relative height

42 Amount of work produced depends on relative height

43 Amount of work produced depends on electrical potential difference

44 8 x 1.5 V = 12 V Amount of work produced depends on electrical potential difference

45 8 x 1.5 V = 12 V Amount of work produced depends on electrical potential difference

46 8 x 1.5 V = 12 V Amount of work produced depends on electrical potential difference

47 Electricity/Water Analogy High potential High potential

48 Electricity/Water Analogy: Current Low flow High flow

49 Electricity/Water Analogy: Current Water flow = gallons per minute

50 Electricity/Water Analogy: Current Electrical flow = coulombs per second (current) (amperes)

51 Electricity/Water Analogy: Current Electrical flow = coulombs per second (current) (amperes)

52 Electricity/Water Analogy: Current Electrical flow = coulombs per second (current) (amperes)

53 Electricity/Water Analogy: Current Electrical flow = coulombs per second (current) (amperes) Current is a measure of the flow of electrical charge per unit time: 1 A = 1 C/sec

54 Electricity/Water Analogy: Current

55 Electricity/Water Analogy: Current Low (sustained) flow High (sustained) flow 40 mah 40 Ah (40,000 mah)

56 Electricity/Water Analogy: Power High potential, low flow Low potential, high flow

57 Electricity/Water Analogy: Power High potential, low flow Low potential, high flow 1 W = 1 J/sec

58 Electricity/Water Analogy: Power High potential, low flow + 12 V 2 A = 24 W

59 Electricity/Water Analogy: Power High potential, low flow Low potential, high flow V 2 A = 24 W = A A

60 Electricity/Water Analogy: Power High potential, low flow Low potential, high flow + Power is a measure of rate of 15 V 2 A = 30 W = A + energy transfer: 1 W = 1 V 1 A = 1 J/C 1 C/sec = 1 J/sec

61 Summary of Voltage, Current, and Power Voltage = Height of waterfall Current = Flow of water Power = Rate of work performed by waterwheel at base of waterfall Tall waterfall + lots of water = Many, many Watts

62 Grande Dixence Dam (Switzerland) Height: 935 ft Volume: 6,000,000 m 3 Power: 2,069 MW

63 Hoover Dam (Arizona/Nevada) Height: 726 ft Volume: 2,480,000 m 3 Power: 2,080 MW

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