Formula’s for the 4, 5 and 6 Band Resistors
4 Band Resistor Color Codes
First Band
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· Black = 0
· Brown = 10
· Red = 20
· Orange = 30
· Yellow = 40
· Green = 50
· Blue = 60
· Violet = 70
· Grey = 80
· White = 90
Second Band
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· Brown = 1
· Red = 2
· Orange = 3
· Yellow = 4
· Green = 5
· Blue = 6
· Violet = 7
· Grey = 8
· White = 9
Third Band Multiplier
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· Black = 1
· Red = 100
· Orange = 1000
· Yellow = 10000
· Green = 100000
· Blue = 1000000
· Violet = 10000000
· White = 100000000
· Gold = 0.1
· Silver = 0.01
Fourth Band Tolerance %
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· Green = 0.5
· Blue = 0.25
· Violet = 0.10
· Grey = 0.05
· Gold = 5
· Silver = 10
· None = 20
The Formula For Four Band Resistor
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· (First Band + Second Band) * Third Band = Total
· If Total >= 1000000
· Then Total = Total / 1000000
· Total (Meg)
·
· If Total >= 1000
· Then Total = Total / 1000
· Total (k)
· Else Total = Total
· Total (W)
5 and 6 Band Resistor Color Codes
· Brown = 100
· Red = 200
· Orange = 300
· Yellow = 400
· Green = 500
· Blue = 600
· Violet = 700
· Grey = 800
· White = 900
Third Band
Fourth Band Multiplier
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· Grey = 100000000
· White = 1000000000
Fifth Band Tolerance %
Sixth Band Temperature Coefficient PPM/°C
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· Red = 50
· Orange = 15
· Yellow = 25
· Blue = 10
· Violet = 5
· White = 1
The Formula For 5 and 6 Band Resistors
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· (First Band + Second Band + Third Band) * Fourth Band = Total
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