Name: _________________________________ Date: _______________Per: _____
Activity 1.1.3 Component Identification
Introduction
In 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
Paper and pencil, Scientific calculator, Digital multimeter (DMM), Resistors, Capacitors
Procedure
1. Using the attached resistor color code, determine the nominal resistance value for the
following components.
a)
Ra = _____________________
b)
Rb = _____________________
c)
Rc = _____________________
d)
Rd = _____________________
e)
Re = _____________________
(Yellow / Violet / Red / Gold)
(Green / Blue / Yellow / Gold)
(Red / Violet / Brown / Gold)
(Brown / Red / Green / Gold)
(Blue / Gray / Orange / Gold)
2. Obtain 10 random resistors from your instructor. Using the Resistor Color Code Diagram,
record each resistor’s 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
Colors
Nominal
Value
Tolerance Range
Nominal - %
Measured
Nominal +%
Value
Meets
Tolerance?
1
2
3
4
5
6
7
8
9
10
2. Use the attached Disc Capacitor Label Diagram to determine the nominal capacitance
value for the following components.
a) Ca = _____________
b) Cb = _____________
d) Cd = _________________
c) Cc = ___________
e) Ce = _________________
Resistor Color Code Diagram
Disc Capacitor Label Diagram
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. ______________
G. ______________
G
E
B
F
C
D
A