How do I identify resistors?
Some resistors have contact plates on the bottom. Read the 3 or 4 numbers on the resistor. The first 2 or 3 represent the significant digits and the last indicates the number of 0s that should follow. For example, a resistor reading 1252 indicates a rating of 12,500 ohms or 1.25 kilo-ohms.
What is the code for resistance?
The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only. All 5-band resistors use a colored tolerance band….Standard Resistor Values and Color.
| Color | Red |
|---|---|
| Digit | 2 |
| Multiplier | 102 |
| Tolerance (%) | 2 |
What is the color code for a 22 resistor with 20% tolerance?
| Value | First Color | Second Color |
|---|---|---|
| 18* | Brown | Gray |
| 20 | Red | Black |
| 22* | Red | Red |
| 24 | Red | Yellow |
How do I identify a resistors color code?
Reading and Determining the Resistor Value Hold the resistor with the gold or silver band to the right and read the color codes from the left to the right. Select the color codes from the bands on the resistor. Read the colors from left to right. The resistance value based on the color code provided is now displayed.
What does a resistor color code mean?
The resistor color code indicates the electronic value of a resistor. Manufacturers devised the universal electronic color code rating system in the early part of the twentieth century because the bands of color were much easier to read on a small resistor than tiny print, and were also cheaper to produce.
What are resistor color codes?
brown 560 ohms ±1%
What is the history of the resistor color code?
The resistor colour code was invented in the 1920s by the Radio Manufacturers Association (RMA). All leaded resistors with a power rating up to one watt are marked with colour bands. They are given by several bands and together they specify the resistance value, the tolerance rate and sometimes the reliability or failure rates.
What is the colour code on resistors?
The resistor color code is the way of working out the values of a resistor . Almost all leaded resistors that have a power rating of 1 watt or less will come with a color code printed on it. A resistor can feature up to 6 different color bands. Together these color bands specify the attributes of that resistor.