Resistor color Coding

RESISTOR COLOR CODING:-

                  The electronic color code is used to indicate the values or ratings of electronic components, usually for resistors.

 

To distinguish left from right there is a gap between the C and D bands.

• band A is the first significant figure of component value (left side)
• band B is the second significant figure (some precision resistors have a third significant figure, and thus five bands).
• band C is the decimal multiplier
• band D if present, indicates tolerance of value in percent (no band means 20%)

For example:-

       A resistor with bands of Yellow, Violet ,red and Gold has first digit 4 (yellow in table below), second digit 7 (violet), followed by 2 (red) zeros: 4,700 ohms. Gold signifies that the tolerance is ±5%, so the real resistance could lie anywhere between 4,465 and 4,935 ohms.