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Dependencies: mbed
Lab2_Report.txt
- Committer:
- jackclar
- Date:
- 2018-01-25
- Revision:
- 0:815bb05cffef
- Child:
- 1:71590a7cd53f
File content as of revision 0:815bb05cffef:
Results:
Circuit 1)
Ideal)
V1 = 2.5V
V2 = 1.72
R1 = 1k Ohm
R2 = 2.2k Ohm
I1 = .781 mA = I2
Actual)
V1 = 2.52V
V2 = 1.74V
R1 = 0.998k Ohm
R2 = 2.19k Ohm
I1 = 0.8 mA = I2
Circuit 2)
Ideal)
V1 = 2.1V
V2 = 1.35V
V3 = 0.047V
I1 = 0.746 mA
I2 = 0.615 mA
I3 = 0.13 mA
I4 = 0.099 mA
I5 = 0.31 mA
R1 = 1k Ohm
R2 = 2.2k Ohm
R3 = 10k Ohm
R4 = 470 Ohm
R5 = 1.5k Ohm
Actual)
V1 = 2.128V
V2 = 1.363V
V3 = 0.047V
I1 = 0.77 mA
I2 = 0.64 mA
I3 = 0.15 mA
I4 = 0.12 mA
I5 = 0.05 mA
R1 = 0.993k Ohm
R2 = 2.176k Ohm
R3 = 9.54k Ohm
R4 = 467 Ohm
R5 = 1.482k Ohm
Difficulties:
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.
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
calculations.
Analysis:
Resistors)
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
manufacturing defects and temperature variations. They all seemed to be operating within that range.
Voltage)
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
a voltage cutoff, it will be slightly off. That being said, all of our measurments were very close.
Current)
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
were from differences in resistor values and voltage, which impact the current.