4-Band Color Code for Resistors

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The color code for resistors is a standard way to specify the value of a resistance. There are four bands: the first and the second are digits of a number multiplied by the third that is a power of ten. The last band is the tolerance, which shows the precision of the value of the resistance.

Contributed by: Enrique Zeleny (March 2011)
Open content licensed under CC BY-NC-SA




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