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9.4 CONVENTIONS

9.5 USEFUL COMPONENT INFORMATION

• There are basic families of standard components to be found. Many of these are marked by terse codes and symbols.

9.5.1 Resistors

•The resistor color code is, Black = 0 = 1X Brown = 1 = 10X Red = 2 = 100X Orange = 3 = 1000X Yellow = 4 = 10000X Green = 5 = 100,000X

Blue = 6 = 1,000,000X Violet = 7 = 10,000,000X Grey = 8 = 100,000,000X White = 9 = 1,000,000,000X Silver = 10% tolerance Gold = 5% tolerance

Brown = 1% tolerance

•A resistor will have 4 or 5 bands. The bands that are grouped, or closer to one side of the resistor are the nominal value of the resistor. A single band will be set apart, this will be the tolerance.

2

2

1K

5% tol

22KΩ ± 5%