Understanding the resistor color code is very important if you want to calculate the resistance values ​​of a particular resistor. Each resistance color band represents a number where you can refer to the code below to help you find the standard resistance value. Resistor coding acts like a resistor calculator and with the examples given, it won’t take you long to understand it.

0=black, 1=brown, 2=red, 3=orange, 4=yellow, 5=green, 6=blue, 7=purple, 8=grey, 9=white, gold=5%, and silver=10%

Red, Red, Orange, Gold = 22 multiplied by 1 (orange equals three zeros), so you get 22 multiplied by 1000 = 22000 ohms or 22 kilo ohms with +/-5% tolerance (gold).

Blue, Grey, Brown, Gold = 68 multiplied by 1 (brown equals one zero), so you get 68 multiplied by 10 = 680 ohms with +/- 5% tolerance.

Brown Gold, Black, Yellow = 10 multiplied by 1 (yellow equals four zero), so you get 10 multiplied by 10000 = 100000 ohms or 100 kilo ohms with +/-5% tolerance.

Yellow, Violet, Gold, Gold = 47 multiplied by 0.1 (gold on the 3rd band), so you get 4.7 ohms with +/-5% tolerance

Orange, Orange, Silver, Gold = 33, multiply by 0.01 (silver on 3rd band) so you get 0.33 ohms with +/-5% tolerance.

In electronic repair, most of the time I came across a five-band resistor color code. The purpose of using the five color band resistor in a circuit is that it provides a more accurate value compared to the four color band. For example, to get the value of 22.6 kohm, with a four color strip resistor you will not be able to find it. The most you can get is 22k (red, red, orange, and gold).

If you are going to be able to calculate it with the band of five colors (red, red, blue, red, brown), the last color, which is brown, represents 1% tolerance. If you open an analog multimeter you will understand what I mean. Most of the resistance circuits inside the multimeter use bands of five colors. Why? Because of the reading you get each time you measure current, voltage, or ohms, the panel will display the closest value. For example, if you measure a 9v battery, the needle will indicate that it can be 8.9v, 9v or 9.1 volts. If that particular multimeter was designed using four color strip resistors, the result you get might be 8.5v, 9.5v or even 10 volts. In other words, the use of the five color band resistor is to make a circuit more precise and to generate the desired result as what the engineers want it to be.

If you come across a wire-wound resistor, there are numbers printed on the resistor, and each coding represents a resistance value. Below are the formulas you can use to find out the exact resistor values: R82 is 0.82 ohms, 15R2 is 15.2 ohms, 100R is 100 ohms, 10K is 10 kilohms, 2K7 is 2.7 kilohms, and 2M2 is 2.2 megohms. . I hope you will find this article on resistor color code useful and that you can calculate the resistor value in the shortest possible time.