Laboratory Report #1
Resistor Colour Codes
and Meter Resistances
Name:
,
(last name)
Lab Section: ETY155
(first name)
Date:
1. Refer to the supply of resistors in you parts package.
Instructor Lecture of Resistor Colour Code
2. Using the Resistor Colour Code, determine the values of the supplied resistors.
1st 3rd
Symbol
2nd 4th
Resistor
Table 1
Colour Codes
1st
2nd
3rd
Values
4th
Min.
Max.
Meas.
Condition*
6.8
±5%
91
±5%
560
±5%
4.7 k
±5%
22 k
±5%
1 ETY 155 Laboratory Report #1: Resistor Color Codes & Meter Resistances
* Resistor condition: GOOD (within tolerance), CHANGED VALUE (out of
tolerance but not 0 nor infinity ohms), OPEN (infinity ohms), SHORTED (0 ohm).
Instructor Demo of Ohmmeter, Voltmeter, and Ammeter
3. Using the multimeter configured as an ohmmeter, measure the given resistors
and insert values in Table 1.
4. Refer to the supply of resistors indicated in Table 2. Determine what
colour code you are looking for.
Table 2
Resistor
Colour Codes
1st
2nd
3rd
Values
4th
Min.
Max.
Meas.
Condition
10
±5%
100
±5%
10 k
±5%
100 k
±5%
1M
±5%
5. Measure these resistors and insert their values in Table 2.
Protoboard (Breadboard) Layout
Instructor Demo of Protoboard Function
Schematic to Pictorial
2 ETY 155 Laboratory Report #1: Resistor Color Codes & Meter Resistances
6. Using the protoboard and resistors in your parts package, connect as many
resistors in series as necessary to give a total resistance which fits into the
tolerance of 8.3 k ±5%. Draw the pictorial below indicating the placement
(and connections) of the ohmmeter and the values of resistors used.
7. Calculate the minimum value and maximum value 8.3 k ±5% can be, then
measure the actual value of this string of series resistors and insert in Table 3.
Table 3
Calculated Values
Minimum
Maximum
Measured
Value
3 ETY 155 Laboratory Report #1: Resistor Color Codes & Meter Resistances
8. Using the protoboard and resistors in your parts package, connect as many
resistors in series as necessary to give a total resistance which fits into the
tolerance of 14.9 k ±5%. Draw the pictorial below indicating the placement of
the ohmmeter and the values of resistors used.
9. Calculate the minimum value and maximum value 14.9 k ±5% can be, then
measure the actual value of this string of series resistors and insert in Table 4.
Table 4
Calculated Values
Minimum
Maximum
Measured
Value
4 ETY 155 Laboratory Report #1: Resistor Color Codes & Meter Resistances
10. Using one multimeter configured as an ohmmeter, and the other multimeter
configured as a voltmeter, measure the resistance of all the voltmeter ranges.
Insert the data in Table 5.
Table 5
Voltmeter Ranges
Measured Resistance
11. Using one multimeter configured as an ohmmeter, and the other multimeter
configured as an ammeter, measure the resistance of all the ammeter ranges.
Insert the data in Table 6.
Table 6
Ammeter Ranges
Measured Resistance
12. Using the resistors in your parts package configure the least number of
resistors in series to result in a resistance closest to the desired values.
Record in Table 7.
Table 7
Total Resistance
Desired
600
2.4 k
5.3 k
7k
8.5 k
Resistors Used
Measured
Resistance
The End
5 ETY 155 Laboratory Report #1: Resistor Color Codes & Meter Resistances