To use this resistor calculator select the number of bands, the colors, the multiplier and the tolerance, the value will be displayed below:
To calculate the value of a 3-band resistor, you need to know the colors of the three bands. The first band represents the first number, the second band represents the second number, and the third band represents the tolerance factor. Place the first and second numbers and multiply this value by the multiplication factor to get the resistor value.
Example: If the colors of a resistor are brown, purple, and red, that means the resistance value is 1.6 kiloohms.
To calculate the value of a 4-band resistor, you need to know the colors of the four bands. The first band represents the first number, the second band represents the second number, the third band represents the third number, and the fourth band represents the tolerance factor.
Position the first and second and multiply this value by the multiplication factor to obtain the resistor value.
Example: If the colors of a resistor are brown, green, red and gold, it means that the resistance value is 1500 ohms, with a tolerance of ±5%.
To calculate the value of a 5-band resistor, you need to know the colors of the five bands. The first band represents the first number, the second band represents the second number, the third band represents the third number, the fourth band represents the multiplication factor, and the fifth band represents the tolerance factor. Place the first, second and third number and multiply this value by the multiplication factor to get the final value of the resistor.
Example: If the colors of a resistor are green, blue, red, gray and gold, it means that the resistance value is 56.2 Gigaohms, with a tolerance of ±5%.< /p>
Proper resistor sizing is important to ensure proper circuit operation and to prevent damage to circuit components. If the resistor is not sized correctly, the current can increase, causing overheating or even fire. Also, if the resistor size is too large, it can cause a voltage drop and prevent the circuit from working properly. Therefore, it is essential to ensure that the resistors are sized correctly to ensure the safety and proper functioning of the circuit.
Resistor Color Code Table | |||||
---|---|---|---|---|---|
Color | Band | Multiplier | Tolerance | ||
1st | 2nd | 3rd | |||
Black | 0 | 0 | 0 | x1 Ω (10^{0}) | ± 1% |
Brown | 1 | 1 | 1 | x10 Ω (10^{1}) | ± 1% |
Red | 2 | 2 | 2 | x100 Ω (10^{2}) | ± 2% |
Orange | 3 | 3 | 3 | x1K Ω (10^{3}) | |
Yellow | 4 | 4 | 4 | x10K Ω (10^{4}) | |
Green | 5 | 5 | 5 | x100K Ω (10^{5}) | ± 0.5% |
Blue | 6 | 6 | 6 | x1M Ω (10^{6}) | ± 0.25% |
Violet | 7 | 7 | 7 | x10M Ω (10^{7}) | ± 0.1% |
Gray | 8 | 8 | 8 | x100M Ω (10^{8}) | ± 0.05% |
White | 9 | 9 | 9 | x1G Ω (10^{9}) | |
Gold | x0.1 Ω (10^{-1}) | ± 5% | |||
Silver | x0.01 Ω (10^{-2}) | ± 10% |