6/2/2023 0 Comments Standard resistor values![]() ![]() The accuracy of all the series definition and values as follows:Į192 0.5%, 0.25%, 0.1% accuracy, and more If you ask why I use this formula? Look at this formula to know more profound, than I can answer.ĮIA defines the precision of a few series resistance value, namely E3 E6 E12 E24 E48 E96 E192, E behind the figures represent the total from 100 to 1000 a number of resistance, other resistance index by 10 multiplication and division are, as 4.7Ohm, 4.7KOhm so. Some may ask why not, as 100, 120, 140, 160, 180, 200, so? In fact resistance value is counted in accordance with the following formula out, n that the first n-value, N the definition of the class that EIA (N = 192, 96, 48, 24, 12, 6, 3). ![]() Analogy in this way from 100Ohm to 1000Ohm resistor value is 100, 120, 150, 180, 220, 270, 330, etc., which is defined in EIA E12 series resistor values. ![]() To understand the resistance system, take 10% precision resistors, if the first resistance is 100Ohm, 105Ohm do not need to, because the resistance of 100Ohm precision is 90 to 110Ohm, so the second sense resistor value is 120Ohm, 110Ohm resistance ranging from precision to 130Ohm. American Electronics Industry Association defines a standard resistor value system (in fact, capacitors and inductors system here is applicable), the system is defined in the last century, at that time were still carbon film resistor technology, the precision is very low.
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