# Help!!! Resistors!!!

Discussion in 'General Electronics Chat' started by Lightfire, May 20, 2011.

1. ### Lightfire Thread Starter Well-Known Member

Oct 5, 2010
690
21
Hello,

I have resistors. Purchased.

Now, I heard that it can be identified by its colors. nOW, im confusing!!!

pls help!!!

1 resistor colored=orange,black, and brown
2 resistor colored=red, black, and brown
3 resistor colored= brown, purple,and yellow green.

Um, help?

resistors that i have purchased is 470Ω,1kΩ,10k.Ω

Thanks!

Lightfire aka Catapult

Apr 17, 2010
790
186
3. ### Kingsparks Member

May 17, 2011
118
5
Orange, Black and brown should be 300 but are you sure it is not brown, black and orange, or 10,000?
Only thing I can see.

4. ### t06afre AAC Fanatic!

May 11, 2009
5,939
1,222
If you google resistor color code You will find a lot tables to decode the color code. Also some online calculators. Find the one that you like best. And stick to that

5. ### Wendy Moderator

Mar 24, 2008
20,772
2,540
Bad Boys Ravished Our Young Girls, But Violet Gives Willingly.

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

This simple mneumonic will help you remember the color code, it was old when I was new.

Most (but not all) resistors have 3 rings to identify what the resistor is. 1st color, 1st value, second color same, 3rd color is the number of zeros after the first two digits.

So Orange Orange Orange will be 33000Ω

The is a fourth ring, but it is usually gold or silver. Gold is 5% tolerance, silver is 10%. So 33000Ω ± 5%, or 33000Ω ± 1650Ω

6. ### Zwilorg New Member

May 18, 2011
6
0
and if you *have a smartphone with android just download the app

Electrodroid, awesome stuff in there.

the 1st option is just what you need you get the colors you have on the program and it will tell you the value of the resistor.

or the other way around too (input value, output colors)

http://www.appbrain.com/app/electrodroid/it.android.demi.elettronica

Best regards and have fun

Last edited: May 20, 2011
7. ### debjit625 Well-Known Member

Apr 17, 2010
790
186
Are you sure about it ?????

8. ### wmodavis Well-Known Member

Oct 23, 2010
737
150
I always use a good digital Ohm meter to determine what the colors are.

9. ### magnet18 Senior Member

Dec 22, 2010
1,232
125
He might not get that...

I'm pretty sure kids in the Philippines don't generally have smartphones
Thats an american thing.

Lightfire, the order of the colors matters, In the electronics cheat sheet thread there is a picture with the colors and meanings that you can print off and use, I have one hanging on my wall.

May 11, 2009
5,939
1,222

11. ### Kingsparks Member

May 17, 2011
118
5

Obviously you are remembering it the way I originally learned it with a few different words in there.

12. ### Kingsparks Member

May 17, 2011
118
5
All you missed this, I think.

You have an excellent source for the color code at the top of this forum. Go to top of forum and open Vol. V - Reference. Click on "Color Code" (Table of contents, left of page.) Open the chapter then click on color codes. Very well put together explanation and examples.

13. ### magnet18 Senior Member

Dec 22, 2010
1,232
125
I was referring to this one

14. ### Zwilorg New Member

May 18, 2011
6
0

true true

but it can also help other ppl out there too!

(and i am not american, and also own one for 75 and some tweaks made hehe, anything based on linux SO can be exchanged to android +- easily)

15. ### Audioguru New Member

Dec 20, 2007
9,411
896
Most people use anti-virus and anti-spyware software to avoid problems.

16. ### ErnieM AAC Fanatic!

Apr 24, 2011
7,436
1,626
Basically how I remember it too, your version is a bit less violent then I was taught.

You can also take on "Get Some Now" for the tolerance:

Get: Gold 5%
Some: Silver 10%
Now: None 20%

Bad Boys Ravished Our Young Girls, But Violet Gives Willingly. Get Some Now.

Note: Despite many years in the industry and countless Google searches I have yet to find this Violet girl!

17. ### DerStrom8 Well-Known Member

Feb 20, 2011
2,428
1,329
The one I learned was probably invented by some child--It's a lot milder than Violet's

Billy Bob Ran Out Yonder, Giving Babies Very Greasy Wigs

It sounds really stupid, I know, but it's how I learned
Der Strom

18. ### SgtWookie Expert

Jul 17, 2007
22,183
1,728
Usually, resistors have at least 4 color bands; the last one being gold (5%) or silver (10%) to indicate the tolerance.

A long time ago, resistors had only 3 color bands, and the tolerance was 20%. Even longer ago, tolerances were 50%.

Here is a link to a nice graphical resistor color decoder page:
That page is for 4-band color codes. There are also decoders for 5- and 6-band codes, accessible by clicking the links on the upper left of the page.

19. ### Lightfire Thread Starter Well-Known Member

Oct 5, 2010
690
21
Wahhh! Almost all of my classmates had smartphones. If not smartphones, yea, laptop. But, I'm not belong to those. I'm not fond of those gadgets.

Catapult. Catapult. Catapult......

20. ### DerStrom8 Well-Known Member

Feb 20, 2011
2,428
1,329
Hi, Catapult

As you grow up you will see the need more and more for "those gadgets." They are beginning to play a major role in the world, and make your life significantly easier. I personally do not have a smartphone, but I do have a laptop. I honestly don't know what I would do without it
DS