Activity 1.1.4 Component Identification: AnalogIntroductionIn the field of electronics, there are an endless number of different types of components. The ability to identify these components and to understand how they are labeled is an essential skill for anyone working in the field.
In this activity you will identify and determine the nominal values for a series of resistors and capacitors. We will concentrate on resistors and capacitors because they are part of virtually every electronics design ever made.
Equipment Scientific calculator Digital multimeter (DMM) Resistors Capacitors
Procedure1. Using the attached resistor color code, determine the nominal resistance value for the
following components. Express your answers using the proper SI units and prefix.
(Yellow / Violet / Red / Gold)
a) Ra = ____________________________
(Green / Blue / Yellow / Gold)
b) Rb = ____________________________
© 2014 Project Lead The Way, Inc. Digital Electronics Activity 1.1.4 Component Identification – Page 1
(Red / Violet / Brown / Gold)
c) Rc = ____________________________
(Brown / Red / Green / Gold)
d) Rd = ____________________________
(Blue / Gray / Orange / Gold)
e) Re = ____________________________
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2. Obtain 10 random resistors from your instructor. Using the Resistor Color Code Diagram, record each resistors nominal value and tolerance range. Next, use a digital multi-meter (DMM) to measure and record the actual resistance value of each resistor. Finally, indicate if the measured value is within acceptable tolerance.
Resistor ColorsNominal
Value
Tolerance RangeMeasured
ValueMeets
Tolerance?Minimum Accepted
Value
Maximum Accepted
Value
1
2
3
4
5
6
7
8
9
10
3. Use the attached Disc Capacitor Label Diagram to determine the nominal capacitance value for the following components.
a) Ca = ____________________________
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b) Cb =____________________________
c) Cc = ____________________________
d) Cd = ____________________________
e) Ce = ____________________________© 2014 Project Lead The Way, Inc.
Digital Electronics Activity 1.1.4 Component Identification – Page 4
Resistor Color Code Diagram
Disc Capacitor Label Diagram
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Example : 270
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4
First DigitFirst Figure
Second DigitSecond
Figure
Third Digit# of Zeros
Fourth DigitTolerance
7 2 K
4 7 00 K4700 pF 10%
Conclusion
1. Why are the measured values of the resistors different from the nominal values?
2. Identify each of the circled components for the printed circuit board shown below.
A. ________________________
B. ________________________
C. ________________________
D. ________________________
E. ________________________
F. ________________________
© 2014 Project Lead The Way, Inc. Digital Electronics Activity 1.1.4 Component Identification – Page 7
A
D
E
FB
C
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