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on April 25, 2020
STANDARD RESISTORS COLOUR CODES
Colour |
Digit Value |
Multiplier Factors |
Black |
0 |
|
Brown |
1 |
|
Red |
2 |
|
Orange |
3 |
|
Yellow |
4 |
|
Green |
5 |
|
Blue |
6 |
|
Violet |
7 |
|
Grey |
8 |
|
White |
9 |
|
Silver |
|
|
Gold |
|
|
No band |
|
For example if its Grey followed by yellow , you will have 84 . The third is a power of 10 . for example if the third colour is also grey, it will now be or if it is brown it will be or orange it will be To calculate the value of a standard carbon resistor from the table above using colour code on the resistor, the first two bands (starting with the bands nearest to an end) are digits.
The fourth band indicates precision or tolerance. If the fourth is Gold it will be
Example
What is the resistance of a resistor with colour yellow, red, brown and silver ?
Yellow = 4
Red= 2
Brown= multiplier factor = 10
Silver = tolerance =
The resistance of the resistor is 42 x 10 = 420 = 410 Ω to 430Ω in range
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resistors colour codes
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