Resistor Colour Codes
Resistor Colour Codes
Learn how to identify different resistors with their colour codeelectric circuit | education
The humble resistor
is a key component of many renewable energy systems
. They are designed to resist electricity and can therefore be used to supply the correct voltage to the various components in an electric circuit.
are so small - too small to print numerical resistance values on - they are instead marked with four, five, or (less commonly) six coloured bands. Each colour represents a different number and so the value (in Ohms) of the resistor can easily be calculated.
Resistor Colour Code Chart
The last coloured band is usually used to indicate the tolerance
- a measure of how accurate the stated resistance is, i.e. 1%, 2%, 5%, or 10%. In the case of six band resistors, is used to show the temperature coefficient
- a measure of how much the resistance of a resistor is changed by changes in temperature.
Remembering the Resistor Colour Code Values
There are many mnemonic phrases to help you to remember the order of the colours:
Black Brown Red Orange Yellow Green Blue Violet Gray White
...which correspond to the values 0-9. For example:
Bad Beer Rots Our Young Guts But Vodka Goes Well.
Article Last Modified: 14:19, 22nd Feb 2007
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