Next comes a small gap helping you to distinguish left and right of the component and finally the. Generally, the resistance value, tolerance, and wattage rating are printed on the body of a resistor as numbers or letters when the resistors body is big. This resistor, read from left to right, has the colored bands of red, violet, yellow, silver. Hence, the resistance value of the given resistor is 2500 5%. Calculate the resistance for 3 band, 4 band, and 5 band resistors by simply selecting the colors youre using. Resistor color code calculating resistance from color bands. Pth platedthroughhole resistors use a colorcoding system which really adds some flair to circuits, and smd surfacemountdeviceresistors have. The colorcoding of these color bands on the resistor is used to identify the value and tolerance.
This formula is used to calculate how much resistance will be present in a wire conductor. The color code starts near the edge of one side of the resistor and consists of several. Jun 06, 2015 resistors are color coded with markings or bands that allow you to quickly identify resistance values and tolerance. Big boys race our young girls but violet generally wins. With that knowledge, realize that on a fourband resistor the third color will always be blue 106 or less and on a fiveband resistor, the fourth color will always be green 105 or. Resistor color codes are used to indicate the value of resistance defined by radio manufacturer association in 1920 according to the international standards iec 60062. In the color code of the first band a depicts the first digit of the numerical value of the resistance. To measure the value of the resistor by digital multimeter dmm. The value of the resistor is marked on the body using colors. Formula to calculate resistor color code of 4 band, 5 band, 6 band made easy by bbroy of great britain has very good wife. Apr 23, 20 download resistor color code calculator for free.
Resistor color codes and chart for 3, 4, 5, and 6 band. Resistor color code calculator and chart 4band, 5band. The third band represents the multiplier while the fourth band represents tolerance. Resistors come in variations with 4, 5 or more color bands where a 4band color code is most common. For example, many resistor manufacturers make every single value on the e24 list in 1% and 2% tolerance even though the.
Formula to calculate resistor color codeget resistor value. Resistor color code calculator calculate 4 and 5 band. Resistors have standard colors for identification of the resistance value. How to memorize the resistor color code the reason i came up with this is because in high school and in college they taught us the same offensive phrase, bad boys, etc, but violet gives willingly. What formula is used to calculate resistance using the color code. Resistor color code description by patrick hoppe in this interactive activity, students read about the colored stripes on a resistor and interpret the placement of. The coding is defined in the international standard iec 60062. Resistor values are often indicated with color codes. Apr 07, 2020 the color coding of these color bands on the resistor is used to identify the value and tolerance. In the color code of the second band b represents the second digit of the numerical value of resistance. In the case of a 3 or 4 band resistor, the first two band indicate the significant digits and the third indicates the multiplier. The resistor color code and the eia preferred values are internationally accepted standards, but some manufacturers have their own way of doing things. To read the whole thing, put the tolerance band at your right, and go like this.
Color band exceptions there are always exceptions to every rule, and resistors are no different. Resistor color code calculator calculate 4 and 5 band resistors. The first letter of the color code is matched by order of increasing magnitude. For the first and second colored bands, the values for black is 0, brown is 1, red is 2, orange is 3, yellow is 4, green is 5, blue is 6, violet is 7, grey is 8 and white is 9. The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. Below are given calculators for different types of resistors such as 3 band, 4 band, 5 band and 6 band resistors. We have a basic article on breadboard power supply. With 4 bands the first and second band represent the first and second signficant digit of the ohm value, the 3 band is the decimal multiplier.
Although this is easy to memorize, it didnt make it easy to remember a color for a number without having to think of the entire sentence. A helpful little utility that allows you to find the value of a standard resistor without memorizing the color codes. A resistor is a perhaps the most common building block used in circuits. Resistors are identified by a standard color coding system. To find the value of a resistor and its tolerance by color coding. Formula to calculate resistor color codeget resistor. Aug 22, 2018 to overcome this, resistor color coding is introduced. It also has a complete resistor color code chart having all values. Identify the procedures in interpreting resistor color coding 3. Hold the resistor with the gold or silver band to the right and read the resistor. Our resistor color code calculator is a handy tool for reading carboncomposition resistors whether its a 4band, 5band or 6band type. Resistor colour coding uses coloured bands to easily identify a resistors resistive value and its percentage tolerance there are many different types of resistor available which can be used in both electrical and electronic circuits to control the flow of current or to produce a voltage drop in many different ways. The color code starts near the edge of one side of the resistor and consists of several stripes, or bands, of color.
You will find that it is important to reduce the resistance in the conductors in circuits. A resistor is identified by its pattern of color of bands. If there is no tolerance band, then find the side that has. Explanation, formulas and charts are added below each resistor. Color bands are used because they can be easily and cheaply printed on a small electronic component. Three 3 band resistor resistance color code calculator. The most popular mnemonic is b ig b oys r ace o ur y oung g irls b ut v iolet g enerally w ins where the first letter of each word corresponds to the first letter of the color. Determine the resistance value of carbon resistor through color coding 2. Reading resistors is a very simple procedure if you use the chart and formula below. 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. Pth platedthroughhole resistors use a color coding system which really adds some flair to circuits, and smd surfacemountdeviceresistors have their own valuemarking system. Colorcoding is a method used to indicate the resistive value, tolerance, and temperature coefficient of resistors with low wattage rating because of their small size.
Resistor colour coding uses coloured bands to easily identify a resistors resistive. To use this tool, simply click on a particular color and number and watch how the actual bands on the resistor illustration change. Components and wires are coded with colors to identify their value and function. Color coding identifies the nominal value and tolerance of most resistors. This chart shows you how you can read the resistor color bands.
Therefore, it is necessary to be familiar with this system. After power supply, the next major important thing to learn is how to measure resistor with multimeter and color coding. This is it for this post, i believe now you know how to calculate resistor value using color code. The resistors have a set of four or three coaxial coloured rings. The power rating of the resistor depends upon the physical size of the resistor.
If it was still not clear to you, check out my page. Although this is easy to memorize, it didnt make it easy to remember. Resistor color code chart and resistance calculator west. Q1 which end of the resistor must be used for reading the colour codes. Resistors may not display the value outside but resistor color pattern through their resistance can be calculated. The digikey resistor color code calculator is an easytouse tool to quickly identify the value of your typical throughhole resistors with 4, 5, or 6 color bands. Green and blue are the first significant digits 56. Jan 06, 2019 a 100% free resistor color code calculator. In the 1920s, citation needed the rma resistor color code was developed by the radio manufacturers association rma as a fixed resistor coloring code marking. There is no particular formulae but the resistance using the color codes is. The output of the circuit is a total resistance of the circuit. The colour code used to denote the tolerance rating of a resistor is given as. The calculator will show the resistance value based on selected band. The attractive rainbow colors adorning most fixed resistors serve a purpose beyond catching your eye.
The input of the circuit is the color code of a resistor. Tolerance is the precision of the resistor and it is given as a percentage. Oct 06, 2018 formula to calculate resistor color code of 4 band, 5 band, 6 band made easy by bbroy of great britain has very good wife. Brown, red, brown, gold 120 ohm resistor color code for 4band is calculated as.
To calculate the resistance of a resistor, you can select the appropriate color bands in the above resistor color code calculator. Practically all leaded resistors with a power rating up to one watt are marked with color bands. Resistors come in many shapes and sizes this tool is used to decode information for color banded axial lead resistors. So, for a 560 ohm, 5% resistor the color stripes will be green, blue, brown and gold. The gold or silver band is always placed to the right. Resistor color code description by patrick hoppe in this interactive activity, students read about the colored stripes on a resistor and interpret the placement of those colors to determine the value of fourband resistors. Lets take an example of a 6band resistor with the colors given in the above image brown, black, orange, red, gold and brown.
Resistor color code, tutorial, formulas, georg simon ohm. Check out all about circuits resistor color code calculator, a handy tool for reading resistor color code values. Youll get used soon enough, and a bit later youll be spotting what you want at once. Select the number of bands, then their colors to determine the value and tolerance of the resistors or view all resistors digikey has to offer. Explains how to find resistance values and tolerances for 3, 4, 5 and 6 band resistors.
In the case of 5 band and 6 band resistors the first three bands indicate the significant digits and the fourth band indicates the multiplier. Resistors are color coded with markings or bands that allow you to quickly identify resistance values and tolerance. Just have a look to the resistor color code chart below and see the calculations, how the resistance value is. Resistor color code calculator and chart 4band, 5band or 6. Only large resistors are marked with their rated power, usually 5 watts and up. Every color is different number and you can remember these numbers or you can just use the table on next step. Smd resistor code 103 value in ohms, formula sm tech. Resistor color code chart and resistance calculator. Big boys race our young girls but violet generally wins digikey. Using the formula and chart above, the resistance would be.
Similar to the 3 band resistor, the first two bands always give the first 2 digits of the resistance value. You can get a good idea of power rating by the physical size of the resistor since power in a resistor always ends up as heat and must be dissipated. Once you find the values for the first two bands, for example, if we have a red band and a black band, then the values will. The coding of color is defined in the international standard 1ec60062. For example, many resistor manufacturers make every single value on the e24 list in 1% and 2% tolerance even though the practice makes little mathematical sense. Resistor having only single black band is called as zeroohm resistor. The 4band resistor color code is the most commonly used resistor. Here, each band position and its color has specific significance to calculate resistance value. So according to the formula the resistance will be. Position the resistor with this band on the right side and again read your resistor from left to right. Resistor colour code and resistor tolerances explained. Or there are much resistor calculators that you can use.
I want a program code for visual basic, for resistor color. Color coding is a method used to indicate the resistive value, tolerance, and temperature coefficient of resistors with low wattage rating because of their small size. Electric circuit analysis i page 1 of 7 experiment no. There is a lot we can write and argue, because of such a vast topic but i leave it here.
Almost all resistors pinned with a power rating of up to 1 watt are marked with color bands. Colorcoding identifies the nominal value and tolerance of most resistors. The colour bands of the resistor would look like this. Watch this video to learn more about how to read a resistor. Colors used to code a 470k ohm resistor and resistor value are some. Resistor color codes color codes electronics textbook. Brown 1%, red 2%, gold 5 %, silver 10 % if resistor has no fourth tolerance band then the default tolerance would be at 20%. At the end of the lesson the students are expected to. It is used as a wire act as a jumper to connect traces on a printed circuit board pcb. Formula to calculate resistor color codeget resistor value by. There are four different color bands a, b, c and d printed on the resistor body as shown in a below figure. This tool is used to decode information for color banded axial lead resistors. Mnemonics are used to help memorize the electronic color codes of electronic components such as resistors. Before industry standards were established, each manufacturer used their own unique system for color coding or marking their components.
Resistor color code calculator 3, 4 and 5 band resistors. Resistor color coding uses colored bands to quickly identify a resistors. If the color is found on the 3rd band for a 4band type or the 4th band for a 5band and 6band type, then its a multiplier. Resistor color code system how to read the resistor code. Resistor color code chart and resistance calculator west florida. The 120 ohm resistor color code for 4band resistor is as shown in the image below. B ig b oys r ace o ur y oung g irls b ut v iolet g rey w ins. Also includes and ohms law calculator and a resistor color code quiz currently in the process of being implemented.
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