CPS-Lab* / Mbed 2 deprecated Lab2

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Dependencies:   mbed

Lab2_Report.txt@0:815bb05cffef, 2018-01-25 (annotated)

Committer:
jackclar
Date:
Thu Jan 25 15:28:13 2018 +0000
Revision:
0:815bb05cffef
Child:
1:71590a7cd53f
Lab 2 Report;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jackclar 0:815bb05cffef 1 Results:
jackclar 0:815bb05cffef 2 Circuit 1)
jackclar 0:815bb05cffef 3 Ideal)
jackclar 0:815bb05cffef 4 V1 = 2.5V
jackclar 0:815bb05cffef 5 V2 = 1.72
jackclar 0:815bb05cffef 6 R1 = 1k Ohm
jackclar 0:815bb05cffef 7 R2 = 2.2k Ohm
jackclar 0:815bb05cffef 8 I1 = .781 mA = I2
jackclar 0:815bb05cffef 9
jackclar 0:815bb05cffef 10 Actual)
jackclar 0:815bb05cffef 11 V1 = 2.52V
jackclar 0:815bb05cffef 12 V2 = 1.74V
jackclar 0:815bb05cffef 13 R1 = 0.998k Ohm
jackclar 0:815bb05cffef 14 R2 = 2.19k Ohm
jackclar 0:815bb05cffef 15 I1 = 0.8 mA = I2
jackclar 0:815bb05cffef 16
jackclar 0:815bb05cffef 17 Circuit 2)
jackclar 0:815bb05cffef 18 Ideal)
jackclar 0:815bb05cffef 19 V1 = 2.1V
jackclar 0:815bb05cffef 20 V2 = 1.35V
jackclar 0:815bb05cffef 21 V3 = 0.047V
jackclar 0:815bb05cffef 22 I1 = 0.746 mA
jackclar 0:815bb05cffef 23 I2 = 0.615 mA
jackclar 0:815bb05cffef 24 I3 = 0.13 mA
jackclar 0:815bb05cffef 25 I4 = 0.099 mA
jackclar 0:815bb05cffef 26 I5 = 0.31 mA
jackclar 0:815bb05cffef 27 R1 = 1k Ohm
jackclar 0:815bb05cffef 28 R2 = 2.2k Ohm
jackclar 0:815bb05cffef 29 R3 = 10k Ohm
jackclar 0:815bb05cffef 30 R4 = 470 Ohm
jackclar 0:815bb05cffef 31 R5 = 1.5k Ohm
jackclar 0:815bb05cffef 32
jackclar 0:815bb05cffef 33 Actual)
jackclar 0:815bb05cffef 34 V1 = 2.128V
jackclar 0:815bb05cffef 35 V2 = 1.363V
jackclar 0:815bb05cffef 36 V3 = 0.047V
jackclar 0:815bb05cffef 37 I1 = 0.77 mA
jackclar 0:815bb05cffef 38 I2 = 0.64 mA
jackclar 0:815bb05cffef 39 I3 = 0.15 mA
jackclar 0:815bb05cffef 40 I4 = 0.12 mA
jackclar 0:815bb05cffef 41 I5 = 0.05 mA
jackclar 0:815bb05cffef 42 R1 = 0.993k Ohm
jackclar 0:815bb05cffef 43 R2 = 2.176k Ohm
jackclar 0:815bb05cffef 44 R3 = 9.54k Ohm
jackclar 0:815bb05cffef 45 R4 = 467 Ohm
jackclar 0:815bb05cffef 46 R5 = 1.482k Ohm
jackclar 0:815bb05cffef 47
jackclar 0:815bb05cffef 48 Difficulties:
jackclar 0:815bb05cffef 49 The most difficult part of this lab was setting up the variable voltage source. We ran into several problems, namely manipulating the input voltage into a 12 bit number that could be output.
jackclar 0:815bb05cffef 50 We rearranged the given formula and accounted for outputting a 16 bit number as a 12 bit number. We also had to make sure that the types were correct when manipulating the voltage and doing
jackclar 0:815bb05cffef 51 calculations.
jackclar 0:815bb05cffef 52
jackclar 0:815bb05cffef 53 Analysis:
jackclar 0:815bb05cffef 54 Resistors)
jackclar 0:815bb05cffef 55 Our resistors were all very close to their ideal values. They weren't perfect because they are physical systems and have a built in error of around 1% due to
jackclar 0:815bb05cffef 56 manufacturing defects and temperature variations. They all seemed to be operating within that range.
jackclar 0:815bb05cffef 57
jackclar 0:815bb05cffef 58 Voltage)
jackclar 0:815bb05cffef 59 The main error for measuring voltage came from our output being a quantized version of an analog output. It can never be perfect. If we get a reading that is on the edge of
jackclar 0:815bb05cffef 60 a voltage cutoff, it will be slightly off. That being said, all of our measurments were very close.
jackclar 0:815bb05cffef 61
jackclar 0:815bb05cffef 62 Current)
jackclar 0:815bb05cffef 63 Current was where we had our largest variations, this was moslty due to our multimeter having a 0.02 mA variance. Even when disconnected the multimeter read 0.02 mA. The other variances
jackclar 0:815bb05cffef 64 were from differences in resistor values and voltage, which impact the current.