Multiplying any resistor value by it's tollerance decimal + 1 will always give you it's maximum value.
To find the maximum value you just add 1 to the tollerance as a decimal. Multiplying any resistor value by it's tollerance inverse will always give you its minimum value. If the tollerance is 5% (0.05) then the exact opposite (inverse) is 95% (0.95). Now, before you have a brain fart, I'll explain that to you.
Here are the above resistors, with the tollerance added and final actual value range.Ī shorthand method (if you will) is to multiply the resistors value by the tollerance's inverse decimal to get the minimum. The variance is how much the resistor can vary either way so on a 100 ohm resistor, it can vary + or - 5 so 105 or 95. To figure this out, you'll need some very basic math skillsĥ% as a decimal is 0.05 - Multiply the resistor value by the tollerance (as a decimal) to get the variance. For a 100 ohm resistor with 5% tollerance, the resistor can have an actual value between 95 and 105 ohms. The tollerance is how much the resistor can be varried, and the standard is usually 5%. And if you weren't thinking that, then you were thinking "I wasn't thinking that" the whole time you were reading the last sentence. Alright, by now you're probably thinking to yourself "Alright, I've got the color coding down, what the hell does that last stripe mean?".
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