Electronics for Absolute Beginners, Chapter 2

Welcome to Chapter 2.

In Chapter 2, we will go through:

1. Resistor Color Code
2. Determine Needed Wattage for A Resistor
3. Electronic Test Equipments
4. Basics of Wires
5. The Metric System
6. Electronic Components and Their Schematic Symbols

Chapter 3 http://www.instructables.com/id/Electronics-for-Absolute-Beginners-Chapter-3/

It is important that you understand Chapter 1 to move forward. Below is the link:

http://www.instructables.com/id/Electronics-for-Absolute-Beginners-Study-Guide/

Step 1 Resistor Color Codes

Resistors provide resistance to current flow.  The amount of resistance of a resistor is based on its value.  To determine the value of a resistor without any test equipment, we must know the resistor color code.  Each color stands for a number and place holder. A Resistor can contain from 3 up to 6 color bands.

Please click this link for a visual presentation of what numbers designated for each color:

http://fellowshipcreative.com/wp-content/uploads/2010/06/res-color-code4.gif

Notice that the color starts from darkest to lightest as it goes up.

Black - 0
Brown - 1
Red - 2
Orange - 3
Yellow - 4
Green - 5
Blue - 6
Violet - 7
Gray - 8
White - 9


Tolerance Rating Color Codes

Brown = +1%, -1%
Red = +2%, -2%
Green = +.5%, -.5%
Blue = +.25%, -.25%
Violet = +.1%, -.1%
Gold = +5%, -5%
Silver = +10%, -10%

Temperature Coefficient Color Codes

Brown = 100ppm
Red = 50ppm
Orange = 15ppm
Yellow = 25ppm

Comments

[mbeaulieu]

not to be a jerk but on the I = V / R you say to divide 15v/ by 1000 ohms, but before you state that the resistance is 100 Ohms. Just a typo but it confused me for a bit.

[elektrobot]

hi mbeaulieu,

thank you for pointing this out, i'm sure you're not the only one confused by that. what chapter and what topic did you find this error in?

Please let me know so I can fix it.

Thank you,
elektrobot

[mbeaulieu]

Ch2 Step 6. :)

[elektrobot]

Thanks, I just updated it. Let me know if you find other discrepancies.

elektrobot

[Thanor]

Thanks for the lesson, i'm waiting for the next lesson :p

[elektrobot]

Hi Thanor,

I'm sorry it's taking me a long time to post Chapter 3, I've been busy looking for jobs lately. But I will work on Chapter 3 today and it should be ready tonite. Hope you're ready for series circuits :)

[Thanor]

No problem, I prefer you keep the good quality of your article :)

And good luck for job hunting!

[elektrobot]

ladies and gentlemen, Chapter 3 is done.

copy and paste the url below to your browser;

http://www.instructables.com/id/Electronics-for-Absolute-Beginners-Chapter-3/

If you have any questions, comments, or suggestions, please feel free to post it on the comment box.

[elektrobot]

Almost done with chapter, just have to add graphics and make it learner friendly. I'm also adding forward bias and reverse bias in Chapter 3.

[schumi23]

Hey,
These are Great, thanks for writing them!
Just... Whens the next one going to be written? :)

[elektrobot]

hi, thanks, i'm glad you liked it. I will work on Chapter 3 Series Circuits tonite :)

[rimar2000]

Thanks for sharing this, is very interesting.