The short answer: you'll know that from experience! But there are some rules you can follow:ġ.) Some resistors have the color bands grouped together and/or close to one end. Red, red, brown is a 220 ohm, 20% resistorīrown, black, orange is a 10k, 20% resistor They will be calculated using the 4 band rule (digit, digit, multiplier). You don't have to enter the 4th band, as 20% resistors don't have a tolerance ring. Resistors with 6 bands are basically 5-band resistors with an additional ring indicating the reliability or the temperature coefficient.
How can I calculate its value?Įnter the first five colors.
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