Fast identification method for color ring resistance 2

(3) When the second ring is black, the color of the third ring represents an integer, such as several, tens, hundreds of k Ω, etc. This is a special case when reading, and it should be noted. For example, if the third ring is red, its resistance value is several k Ω.

(4) Remember the error represented by the color of the fourth ring, which is: gold is 5%; Silver is 10%; Colorless is 20%.

Here is an example to illustrate:diode

Example 1: When the four color rings are yellow, orange, red, and gold in sequence, since the third ring is red and the resistance range is a few points and a few k Ω, substituting the numbers "4" and "3" represented by yellow and orange respectively, the reading is 43k Ω. The gold ring represents an error of 5%.diode

Example 2: When the four color rings are brown, black, orange, and gold in sequence, since the third ring is orange and the second ring is black, the resistance value should be several tens of k Ω. Substituting the number "1" represented by brown, the reading is 10k Ω. The fourth ring is gold, with an error of 5%

In some difficult to distinguish situations, it is also possible to compare the colors of the two starting points, because the starting part of the calculation, that is, the first color, will not be the three colors of gold, silver, and black. If these three colors are close to the edge, they need to be calculated in reverse.diode