For this form gold is -1 and silver is -2.Ĭolor coded resistors come only in certain values. If you have studied the section on scientific notation at the end of the Basic DC Circuits page the resistor color code is AB x 10 C (A B times ten to the C).
A gold third band means A.B is the number of ohms. Write down 62 and put 1 zero after it giving 620 ohms.ģ9 with 4 zeros after it is 390,000 ohms.įor resistors less than 10 ohms the gold and silver colors appear in the third, C, band. The third band, C, tells you how many zeros to place after that number. The first two bands on the left, A and B, form a two digit number. The first band may be double width indicating a wire wound resistor.įirst of all each color stands for a digit as follows. You start on the end away from the gold or silver band. In that case you have to rely on the gold or silver band to tell you where to start. Some 1/4 watt resistors have the bands equidistant from both ends.
You start reading on the end that the bands are closest to.
RESISTOR COLOR CODE 5 BANDS PLUS
The basic code for 5 and 10 percent resistors uses three color bands plus a silver band indicating 10% or a gold band for 5%. This page should make it possible to understand how these codes work and remove the mystery from them. Many beginners find resistor color codes to be confusing and capacitor codes to be completely unbreakable. Reading component color and numerical codes.
RESISTOR COLOR CODE 5 BANDS HOW TO
How to read resistor and capacitor color codes.
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