The document discusses a lesson plan on resistor color coding. The objectives are to identify resistor color coding, understand the resistor color coding table, and calculate resistor values using the table. Students will be divided into groups to identify the colors of sample resistors and write down the color band order. They will then use the color code table to calculate resistances and tolerance ranges of different resistors. Assessment involves students calculating the resistances and tolerances of resistors they are given based on color codes.
The electronic color code is used to indicate the values or ratings of electronic components, usually for
resistors, but also for capacitors, inductors, and others. A separate code, the 25-pair color code, is used
to identify wires in some telecommunications cables.
The electronic color code was developed in the early 1920s by the Radio Manufacturers Association
(now part of Electronic Industries Alliance(EIA)), and was published as EIA-RS-279. The current
international standard is IEC 60062.published by International Electrotechnical Commission.
Colorbands were used because they were easily and cheaply printed on tiny components. However,
there were drawbacks, especially for color blind people. Overheating of a component or dirt
accumulation, may make it impossible to distinguish brown from red or orange. Advances in printing
technology have now made printed numbers practical on small components. Where passive
components come in surface mount packages, their values are identified with printed alphanumeric
codes instead of a color code.
The resistance value, tolerance, and wattage rating are generally printed onto the body of the resistor
as numbers or letters when the resistors body is big enough to read the print, such as large power
resistors. But when the resistor is small such as a 1/4W carbon or film type, these specifications must
be shown in some other manner as the print would be too small to read.
So to overcome this, small resistors use coloured painted bands to indicate both their resistive value
and their tolerance with the physical size of the resistor indicating its wattage rating. These coloured
painted bands produce a system of identification generally known as a Resistors Colour Code.
An international and universally accepted Resistor Colour Code Scheme was developed many years
ago as a simple and quick way of identifying a resistors ohmic value no matter what its size or condition.
It consists of a set of individual coloured rings or bands in spectral order representing each digit of the
resistors value.
The resistor colour code markings are always read one band at a time starting from the left to the right,
with the larger width tolerance band oriented to the right side indicating its tolerance. By matching the
colour of the first band with its associated number in the digit column of the colour chart below the first
digit is identified and this represents the first digit of the resistance value.
Circuit lab 2 identification of resistance with color code and multi-meter@taj
.
This lecture is from my class lectures in IIT-JU.
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We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
1. Republic of the Philippines
DEPARTMENT OF EDUCATION
REGION VIII
SAMAR SHOOLS DIVISION OFFICE
I Objetives:
a. Identify resistor color coding.
b. Understand the use of resistor color coding table.
c. Calculate the value of resistor using resistor color coding table.
II. Subject Matter:
Topic: resistor color coding
TLE_IAE57/8MC-0c-1
References: Consumer Electronics(LM) grade 7& 8 pp26-29
Materials: Visual aid, ¼ watt resitors ;;;
III. Procedures
TEACHERS ACTIVITY STUDENTS ACTIVITY
A. Preliminary Activities
Opening Prayer
Let us have an ecumenical
prayer first.
Greetings
Good afternoon, class!
Collection of assignment
Please pass your assignment
to the front then from the front to the
center.
1. Review
Class, let’s have a short recall on our
previous topic.
What have we discussed last
meeting?
Very good, anybody from the class
who will share about what you have
learned from our last topic?
Yes! Mr__________
I’m glad that you still remember our
previous lesson
Prayer
Good afternoon sir Mabubay
(Submission of Assignment)
Sir we discussed about resistors
Answer may vary
2. 2. Motivation
Direction: Study the traffic light on the
board and identify its color based on
the traffic lights color code.
3. Presentation of the lesson
Our topic for today has something to
do with the traffic lights color code
At the end of the lesson you are
expected to:
1. Identify resistor color coding
2. Understand the use of resistor color
coding table
3. Calculate the value of resistor using
resistor color coding table.
A. Developmental Activity
1. Activity
Before we discuss our topic I will
divide the class into four groups and
each group will be given 4 pieces of
¼ watt resistors .
Direction. Write the color of each
resistor on a piece of paper and identify
what color would be the first bond or
comes first up to fourth bond.
1. RED- STOP
2. GREEN-GO
3. YELLOW-SLOW DOWN
3. 2. Discussion
what are the three most
characteristics of a resistors?
How the Resistance of the
Resistors Measured?
How do we know which color
corresponds to which number?
What is resistor color code?
4- Band Resistors
1.
Tolerance will have 4-bands
2. Convert nominal value to
3. 1st digit (from left to right) of
nominal value = 1st color band
4. 2nd digit of nominal value =
2nd band
5. Number of zeros remaining =
3rd (multiplier) band
6. Tolerance = 4th band
5-Band Resistors
1.
Tolerance will have 5-bands
1. Resistance Nominal Value
2. Tolerance
3. Power Rating
Trough it’s color bands
By using the Resistor Color Code.
Resistor color code uses color bonds to
easily identify a resistors resistive value
and its percentage tolerance.
4. 2. Convert nominal value to
3. 1st digit (from left to right) of
nominal value = 1st color band
4. 2nd digit of nominal value =
2nd band
5. 3rd digit of nominal value =
3rd band
6. Number of zeros remaining =
4th (multiplier) band
7. Tolerance = 5th band
Tolerance Bands
To calculate tolerance range
1. Determine the resistors stated
resistance
2. Multiply the stated resistance
times (x) the tolerance percentage.
3. Add and Subtract your
tolerance figure from the stated
resistance to identify the acceptable
range.
3. Analysis
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
5. RED
BLUE
YELLO
W
GOLD
4. Abstraction
Class, what have you learned about
our topic this day?
Okay very good, in your opinion
what is the essence of knowing on
how to read the resistors color code?
5. Application
The teacher will group the student into
three. The teacher will provide the colored
resistors.
Each group will get five colored resistor.
They will calculate the resistance and get
the maximum and minimum tolerance of
the colored resistors.
They will write their answer with solution
to one whole sheet of paper.
IV.ASSESSSMENT
1.
1000 ohm x 0.2
=+/- 20% tolerance
Maximum 1000+ 20=1020 ohms
Minimum 1000-20=980 ohms
Students answers may vary.
6. BROW
N
BLAC
K
RED
GOLD
RED
BROW
N
BROW
N
GOLD
Calculate the Stated Resistance for the
Resistor
1. What is the stated Resistance and
tolerance percentage? Ω (2 pts.)
2. What is the Tolerance of the resistor? Ω (3 pts.)
B.
1. What is the stated Resistance and
tolerance percentage? Ω (2 pts.)
What is the Tolerance of the resistor?
2. What is the tolerance of the resistor?
C.
1. What is the stated Resistance and
tolerance percentage? Ω (2 pts.)
What is the Tolerance of the resistor?
2. What is the tolerance of the resistor?
Agreement
1. Bring pcb or printed circuit board
and 10 ¼ resistors for tomorrows
activity.
