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Why do you think resistor have different color bands?
Resistor Color Coding uses colored bands to quickly identify a resistors resistive value and its percentage of tolerance with the physical size of the resistor indicating its wattage rating. The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only.
What do the color bands on a resistor tell you?
The color of the band determines the power of 10 you need to multiply the first two resistor digits by. For example an orange third band with a digit value of 3 would indicate a multiplier of 103, though you can also just think of this as telling you to “stick 3 zeros on the end”. Example: Brown-black-orange resistor.
What does the first band on a resistor indicate?
The first few bands always represent digits in the value of resistance. Then you will find a multiplier band to signify moving the decimal right or left. The last bands represent tolerance and the temperature coefficient.
What does Brown mean on a resistor?
Resistors with 6 bands are usually for high precision resistors that have an additional band to specify the temperature coefficient (ppm/˚C = ppm/K). The most common color for the sixth band is brown (100 ppm/˚C). This means that for a temperature change of 10 ˚C, the resistance value can change 1000 ppm = 0.1%.
What do the coloured bands refer to on a resistor?
This little known plugin reveals the answer. The first two color bands on the resistor represent its two-digit number, called the significant numbers , and the third band is the multiplier. A multiplier tells which power of ten the first two numbers should be multiplied by. The fourth band shows the tolerance.
Why do resistors have coloured bands?
So to overcome this, small resistors use coloured painted bands to indicate both their resistive value and their tolerance with the physical size of the resistor indicating its wattage rating. These coloured painted bands produce a system of identification generally known as a Resistors Colour Code.
What do the colors on resistors indicate?
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 the bands on the resistor mean?
The bands on a resistor indicate its resistance value. In order to read the value of a resistor color code correctly, the resistor must be oriented so that the silver or gold color band is on the right. This band gives the tolerance of the resistor.