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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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. ________________________

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A

D

E

FB

C