Music From Outer Space Resistor Calculator
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This handy resistor calculator will help you read resistors. As you can see the carbon composition resistors
have 2 number bands, a multipler band, and a tolerance band. The first two bands are number bands
and they tell you the numbers in the resistor value. The multipler band tells you how many zeroes to add to
come up with the final resistance. For example brown, black, yellow means 1, 0 and four more zeroes 0000 or
100,000 ohms (100K). However when the multipler band is
gold it means multiply the number made up by the value bands by one tenth (0.1). The tolerance band indicates
how close to the stated value the resistor may be. Gold means plus or minus 5%, silver means plus or minus 10%
and no band means plus or minus 20%.
The 1% metal film resistors have 3 number bands, a multipler band and a tolerance band. The first three bands are number bands and they tell you the numbers in the resistor value. The multipler band tells you how many zeroes to add to come up with the final resistance. For example brown, black, black, brown means 1, 0, 0, and one more zero 0 or 1000 ohms (1.0K). For the metal film type this page only shows the 1% tolerance band but there are other charts that show 2% (red band) as well as tighter tolerances. Resistors with tolerance better than 1% are quite expensive. The chart exagerates the space between the numbers-multiplier bands and the tolerance band for the 1% variety. There will be a slight difference in the spacing so you know which end is which. Again the multipler band tells you how many zeroes to add. And once again gold means multiply the number made up by the value bands by one tenth (0.1). |
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