1 Alan Rux Electrical and Computer Engineering Department University of Massachusetts Lowell Campus Lecture 1 of 4 Analog Discovery Design Kit Analog Discovery Design Kit Mini Course Webinar

2 Revolutionizing How Engineering Students Learn Analog Circuit Design

3 Syllabus “ wire-by-numbers” Go To Lecture Do Experiments as in the Syllabus “ wire-by-numbers” three to six student in a Team one student, builds circuit, takes measurements, fills out lab notebooks others texts friends & look out into space one student learns hands-on

4 Discovery Kit

5 Basic Electronic Lab.

6 the Analog Discovery Design Kit allow students to build and test a wide range of analog and digital circuits using their own PC without the need for any other special test equipment.

7 Active learning – learning by doing helps engineering students understand the process of breaking down larger problems into smaller, more easily solved parts without losing the overall understanding of the complete system.

8 University of Massachusetts – Lowell Campus in partnership with - University Program - University Program & DIGILENT Education Tools Indo-US Collaboration for Engineering Education Engineering Education

9 Analog Discovery Design Kit learning by doing

10 Analog Discovery Design Kit Dual Channel Oscilloscope –Two channels differential input, 1 Meg ohm, 24pfd –+/- 20 volts input max –250 mv. to 5 Volts / division with variable gain settings –100 MSPS, 5 MHz bandwidth, 16K points/channel memory –FFT function

11 Analog Discovery Design Kit 2 Channel, Arbitrary Waveforms Generator –Sine wave –Square wave –Triangular wave –Sawtooth wave –Sweep function –AM-FM modulation –4 MHz bandwidth, –10 P-P voltage output –User defined waveforms –Bode function

12 Analog Discovery Design Kit Power Supply –Two fixed voltages +5 volts / -5 volts, 50 ma. Each –Switchable ON / OFF comands –Unit powered by USB computer port, (cable included)

13 Analog Discovery Design Kit Logic Analyzer – Pattern Generator – I/O s –16 signal channels shared between logic analyzer –pattern generator –discrete I/O devices –100 MSPS, 4 k buffer per pin –Cross triggering with scope channels

14 2 differential input Voltmeters

15 Network Analyzer 10Hz to 5 MHz

16 Analog Discovery Design Kit Static I / O –PC based virtual I/O device drivers including: o push buttons o LEDs o switches o seven segment displays o sliders o Progress bars

17 Analog Discovery Design Kit WaveForms Software –Windows XP or newer –full –featured GUI for all instruments

18 Basic Electronic Lab.

19 the Analog Discovery Design Kit allow students to build and test a wide range of analog and digital circuits using their own PC without the need for any other special test equipment.

20 This approach eliminates the time and space limitations of traditional university lab settings and allows students more flexibility to experiment with real circuits through direct hands-on experience

21 Active learning – learning by doing helps engineering students understand the process of breaking down larger problems into smaller, more easily solved parts without losing the overall understanding of the complete system.

22 Indo-US Collaboration for Engineering Education University of Massachusetts – Lowell Campus in partnership with - University Program - University Program & DIGILENT Education Tools

23 Analog Discovery Design Kit learning by doing

24 Analog Parts Kit

25 Electrostatic Discharge Hazard Electrostatic discharge (ESD) is the sudden flow of electricity between two objects caused by contact, an electrical short, or dielectric breakdown. ESD can be caused by a buildup of static electricity by tribocharging, or by electrostatic induction.electrical shortdielectric breakdown

26 WaveForms Software –Windows XP or newer –full –featured GUI for all instruments

27 Let’s Get Started ! Google “Analog Discovery Kit Digilent”

28 Scroll down page to waveforms

29 Mouse click on “Learn more”

30 Click on

31 Need about 38MBite HD space MS Security Essentials will not be happy

32 Follow set-up wizard’s instructions

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35 If you see this, the Discovery kit is not plugged in to USB port

36 Unit was detected “connect to device”

37 You are now connected

38 Download “a getting started guide for first time WaveForms users”

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40 Experence the WaveForms software This can be done with or without the Discovery kit, use demo-mode

41 D.C. Circuits Lab. Experiments Learning the ADK Leads (Analog Discovery Kit) Solder-less breadboard use Power Supply Operation Voltmeter Operation Series Circuits Measurements Superposition Theorem Homework problem

42

43 Time to take the ADK out of the box and connect to a USB port. Connect the Leads to ADK.

44 The Leads are Keyed bottom view color wires with white stripe on bottom, also bottom has small feet pads

45 Note keyway notch

46 Keyway pin

47 ADK top view with leads plugged in ( note solid color wires are on top)

48 Leads are color coded

49 Leads we will be using today

50 To make things easer I use a rubber band to keep the leads I am not using out of the way Not used Leads in use

51 Plug one end into the connector on the end of the leads from the ADK (may be using solid copper 24 awg. insulated wires for leads with ends striped )

52 Now your lead from the ADK is longer and you can plug the PIN end into your solderless breadboard Time for Questions ?

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55 Analog Discovery Design Kit Power Supply MAX –Two fixed voltages +5 volts / -5 volts, 50 ma. MAX –Switchable ON / OFF commands –Unit powered by USB computer port, (cable included)

56 With the ADK plugged into your computer USB port, click on the “W” short-cut logo. The status bar of the Waveforms Window should appear and a red LED on the ADK near the place the USB cable plugs into should be on

57 You are now connected

58 If you see this window recheck your USB cable connections and try again

59 To enable the power supplies click on the “Voltage” icon

60 Power Supply Control Panel Main power control +5 volts control -5 volt control Power use indicator

61 Power Supply Control Panel Main power control - on +5 volts - on -5 volt - on Power use indicator

62 Power Supply Control Panel Power use indicator max current 70 MA20 MA 10 MA

63 Power Supply Control Panel power over the 50 MA limit Error message At this time do not allow 1 amp to be drawn

64 Power active

65 To enable the Voltmeter click on the “more instruments” icon

66 Then Voltmeter This will unable 2 channel oscilloscope

67 2 differential input Voltmeters Note two options for Range, use auto range

68 Voltmeter connections Voltmeter #1 + input Voltmeter #1 - input Voltmeter #2 + input Voltmeter #2 - input

69 Two Resistors in Series Measurements V+ Power Supply +5V (red) V- Power Supply -5V (white) Using the +5v and -5v supplies = 10 volts across node “A” and “B”, R1 & R2 are 1.0K ohms each. Voltmeter 1, positive lead (orange) Voltmeter 2, positive lead (blue) Voltmeter 1 & 2, negative leads (orange/white & blue/white)

70 Two Resistors in Series Measurements R2 R1

71 Two Resistors in Series Measurements

72 Three Resistors in Series Measurements Using the +5v and -5v supplies = 10 volts across node “A” and “B”, R1, R2 & R3 are 1.0K ohms each. V+ Power Supply +5V (red) V- Power Supply -5V (white) Voltmeter 1, positive lead (orange) Voltmeter 1, negative lead (orange/white) Voltmeter 2, positive lead (blue) Voltmeter 2, negative lead (blue/white)

73 Three Resistors in Series Measurements R1 R2R3

74 Three Resistors in Series Measurements

75 Three Resistors in Series Measurements Using the +5v and -5v supplies = 10 volts across node “A” and “B”, R1& R3 are 1.0K ohms, R2 is 100 ohms. V+ Power Supply +5V (red) V- Power Supply -5V (white) Voltmeter 1, positive lead (orange) Voltmeter 1, negative lead (orange/white) Voltmeter 2, positive lead (blue) Voltmeter 2, negative lead (blue/white)

76 Three Resistors in Series Measurements

77 Superposition Theorem Some circuits require more than one voltage or current source The superposition theorem is a way to determine currents and voltages in a circuit that has multiple sources by considering one source at a time

78 Illustration of the superposition theorem. Thomas L. Floyd Electronics Fundamentals, 6e

79 Superposition Theorem Problem current I R3 R1, R2, R3, all are 1000 ohms, Vs 1 =10 volts, Vs 2 =5 volts

80 Superposition Theorem power supply connections R1, R2, R3, all are 1000 ohms, Vs 1 =10 volts, Vs 2 =5 volts V+ Power Supply +5V (red) V- Power Supply -5V (white) + 10 v.+ 5 v. Power Supply +/- common (black)

81 Superposition Theorem voltmeter connections voltmeter 1 across R3 Voltmeter 1 + Orange lead Voltmeter 1 - Orange/white lead

82 Superposition Theorem voltmeter connections voltmeter 2 across R2 Voltmeter 2 + Blue lead Voltmeter 2 - Blue/white lead

83 Superposition Theorem connections R1 R3 R2

84 Superposition Theorem Measurements Channel 1 = R3 Channel 2 = R2 Vs1 = 10 v. Vs2 = 5 v. All Rs = 1000 ohms

85 Homework 1.Series Circuits measurements with 2 to 4 resistors 2.Simple Series/Parallel measurements, 5 resistors or more – experiment around 3. Superposition measurements

86 Questions Alan Rux at BVRIT