Transcript Electrical Components - MyWork-IAT

ATE 1012
Grade 10
Eng. Rose Hasan

Identify basic electrical components such as:
 Lamps, motors and buzzers.
 Resistors, LDRS, capacitors and inductors.
 Diodes.
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Understand the applications of each
component.
Understanding components’ coding.
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 Introduction
 Basic Electrical Components
 Components Coding
 Class and Lab Activities
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
Have you ever opened your personal
computer (PC) or your radio from the inside?
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Video
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Resistance Coding:
 Resistors are specified by their:
▪ Resistance Value
▪ Tolerance
 It is indicated by: color code method.
 Resistance is measured in _____ ?_____.
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 Most resistors have 4 bands:
▪ The 1st band gives the first digit.
▪ The 2nd band gives the second
digit.
▪ The 3rd band indicates the
number of zeros.
▪ The 4th band gives the tolerance
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State the resistor’s value and tolerance for
the following resistors:
R=
R=
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R=
R=
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http://samengstrom.com/nxl/3660/4_band_r
esistor_color_code_page.en.html
Search the net for resistor color code
calculator and post it on my Wiki….
http://mywork-iat.wikispaces.com
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Capacitor Coding: Capacitors are usually specified by
three quantities:
 _______________________
 _______________________
 _______________________

A number code is often used on small capacitors where
printing is difficult.
 The 1st number ______________________
 The 2nd number ______________________
 The 3rd number is _______________________
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The code gives the capacitance in _________________
 Remark: Ignore any letters - they just indicate tolerance and
voltage rating.
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You have a capacitor with "104" stamped on
it.
The first two digits are: ______
The third digit is: _______
The forth digit is:__________
So, C=__________________
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State the capacitance value for the following
capacitors:
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Items Required:
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Using the color coding method, identify the resistance value of
various resistors
 Fill the table below:
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Items Required:
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Identify the capacitance value of various capacitors.
Fill the table below:
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Component
Symbol
A
B
C
D
E
F
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Function
Component in the
Lab
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0
1
9
2
8
3
7
6
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4
5
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Items Required:
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First Band
color and
value
Second Band
color and
value
Value stamped on the
capacitor
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Third band
color and
value
Forth band
color and
value
Capacitance
Resistance
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Items Required:
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
Connect the following circuit:
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Rotate the spindle of the potentiometer.
What do you observe on the light brightness?
------------------------------------------------------------------------------------------------------------------ State an application of potentiometers?
----------------------------------------------------------------------------------------------------------------How can you know the resistance range of
the potentiometer ???
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Items Required:
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Connect the following circuit:
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Expose the LDR to light. What happen to the
brightness of the lamp?
-------------------------------------------------------------------------------------------- ----------------------------------------- Put the LDR in the dark. What happen to the
brightness of the lamp?
------------------------------------------------------------------------------------------------------------------------------------- State some applications of LDRs.
-------------------------------------------------------------------------------------------------------------------------------------
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Write your opinion about today’s class on
my Wiki …
Be prepared to a Quiz next Class in module
#3.
Next Class: Start with Module #4
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