The document discusses the psychology of colors in relation to electronic products, highlighting how various colors influence feelings and characteristics. It also covers the basics of resistor color coding, including how to determine the resistance values and tolerances using color bands for both 4-band and 5-band resistors. Additionally, it includes examples and calculations for assessing resistor values and a brief assignment on series and parallel connections.

1. ELECTRONIC PRODUCTS
ASSEMBLY AND SERVICING

2. PSYCHOLOGY OF
COLORS

3. RED IS THE COLOR OF
ENERGY, PASSION,
ACTION, AMBITION AND
DETERMINATION.

4. ORANGE IS THE COLOR
OF SOCIAL
COMMUNICATION AND
OPTIMISM.

5. THE COLOR BROWN IS A
FRIENDLYYET SERIOUS,
DOWN-TO-EARTH COLOR
THAT RELATES TO SECURITY,
PROTECTION, COMFORT AND
MATERIAL WEALTH.

6. BLUE CALLS TO MIND FEELINGS
OF CALMNESS OR SERENITY. IT IS
OFTEN DESCRIBED AS PEACEFUL,
TRANQUIL, SECURE, AND
ORDERLY. BLUE IS OFTEN SEEN AS
A SIGN OF STABILITY AND
RELIABILITY.

7. GREEN PERSONALITY TYPE TENDS TO
BE ANALYTICAL, CALM, LOGICAL,WITH
A GREAT THIRST FOR KNOWLEDGE.
THEY ARE SOMETIMES DESCRIBED AS
STRATEGIC THINKERS AND VISIONARIES
THAT ARE ALSO BORN LEADERS.THEY
LIKE TO BE IN CHARGE AND LIVE THEIR
LIFE ON THEIR OWN TERMS.

8. RESISTANCE
MEASUREMENT

9. OBJECTIVES:
At the end of the lesson, the students should be able to:
1. Identify the color code value and tolerance of resistors
2. Determine a resistors value by examining its color bands
3. Perform the actual reading of resistors by its color bands
4. Recognize the importance of resistor’s color code and its
tolerance as one of electronic components in a circuit.

10. RESISTANCE (R) is measured in ohms,
symbolized by the Greek letter omega (Ω).
Ohms are named after Georg Simon Ohm (1784-
1854), a German physicist who studied the
relationship between VOLTAGE, CURRENT and
RESISTANCE. He is credited for formulating
OHM'S LAW.

11. E = I X R
VOLTS = AMPS X RESISTANCE

12. RESISTOR
COLOR
CODE

14. 4-BAND
RESISTORS
• Resistors with ±5% and ±10% tolerance will have
4-bands.
• Convert nominal value to ohms (Ω).
• 1st
digit (from left to right) of nominal value = 1st
color band.
• 2nd
digit of nominal value = 2nd
band
• Number of zeros remaining = 3rd
(multiplier) band
• Tolerance = 4th
band

15. 5-BAND
RESISTORS
• Resistors with ±1% and ±2% tolerance will have 5-
bands.
• Convert nominal value to ohms (Ω).
• 1st
digit (from left to right) of nominal value = 1st
color band.
• 2nd
digit of nominal value = 2nd
band
• 3rd
digit of nominal value = 3rd
band
• Number of zeros remaining = 4th
(multiplier) band
• Tolerance = 5th
band

16. TOLERANCE
BANDS
•Determine the resistors stated
resistance from the color bands.
•Multiply the stated resistance times (x)
the tolerance percentage.
•Add and subtract your tolerance figure
from the stated resistance to identify
the acceptable range.

17. EXAMPLE 1. Determine the nominal resistance value and tolerance for the resistor shown below.

18. EXAMPLE 1. Determine the nominal resistance value and tolerance for the resistor shown below.
1ST
digit 2nd
digit Multiplier Tolerance
__2_ _2 x 100 ± _5%
Therefore: 2,200 Ω ±5% or 2.2K Ω ± 5%

19. EXAMPLE 1.
To calculate the tolerance,
• 2,200 Ω x .05 (or 5%)
• = +/- 110 ohms tolerance
• Maximum: 2,200 Ω + 110 Ω = 2310 Ω
• Minimum: 2,200 Ω - 110 Ω = 2090 Ω
1ST
digit 2nd
digit Multiplier Tolerance
__2_ _2 x 100 ± _5%
Therefore: 2,200 Ω ±5% or 2.2K Ω ± 5%

20. EXAMPLE 2. Determine the nominal resistance value and tolerance for the resistor shown below.

21. EXAMPLE 2. Determine the nominal resistance value and tolerance for the resistor shown below.
1ST
digit 2nd
digit Multiplier Tolerance
__4___ __7___ x 1000 ± _5_%
Therefore: 47000 Ω ± 5% or 47K Ω ± 5%

22. EXAMPLE 2.
To calculate the tolerance,
• 47K Ω x .05 (or 5%)
• = +/- 2.35 KΩ tolerance
• maximum: 47KΩ + 2.35 KΩ = 49.35 KΩ
• minimum: 47KΩ - 2.35 KΩ = 44.65 KΩ
1ST
digit 2nd
digit Multiplier Tolerance
__4___ __7___ x 1000 ± _5_%
Therefore: 47000 Ω ± 5% or 47K Ω ± 5%

23. EXAMPLE 3. Determine the nominal resistance value and tolerance for the resistor shown below.

24. EXAMPLE 3. Determine the nominal resistance value and tolerance for the resistor shown below.
1ST
digit 2nd
digit 3rd
digit Multiplier Tolerance
_1 _0_ _0_ x 10 ± _2%
Therefore: 1, 000 Ω ± 2% or 1k Ω ± 2%

25. EXAMPLE 3.
To calculate the tolerance,
• 1, 000 Ω x .02 (or 2%)
• = +/- 20 Ω tolerance
• Maximum: 1,000 Ω + 20 Ω = 1020 Ω
• Minimum: 1,000 Ω - 20 Ω = 980 Ω
1ST
digit 2nd
digit 3rd
digit Multiplier Tolerance
_1 _0_ _0_ x 10 ± _2%
Therefore: 1, 000 Ω ± 2% or 1k Ω ± 2%

26. RESISTANCE
MEASUREMENT

27. ASSIGNMENT:
• 1.What is the series and parallel connection?
• 2. How to get the total resistance of the resistors in
series and parallel connection?
• Reference: Simple Electronics (BASIC), fully Illustrated by Antonio M.
Andres SR. pp. 108 – 110.