resistor color coding formula

Basically, Resistor color code is such an electronic code system. A resistor is identified by its pattern of color of bands. But if we don’t have any ohm meter or multimeter, then also we find the required resistor by calculating the resistance value using resistor color code. They are given by several bands and together they specify the resistance value, the tolerance rate and sometimes the reliability or failure rates. So the final formula you can use to calculate resistance: Resistance = ((10x + y) z) (p/100) (Unit- Ohm) Example of Resistor Colour Code: Consider, a resistor is having four different colour bands red, brown, orange, and gold respectively as shown in the below diagram. 2. Now if we put these values to the 5 band resistor color coding formula, we get, R = (148.96 – 155.04 ) Ω   [2% of 152 is 3.04]. We can identify the first color on the resistor by the following ways: The simple way to identify first color is that there is an increased space that occurs before the tolerance band. For example , a LED light required 2mA current and we have 10V battery, the in order to flow 2mA current through the LED, we need to limit the flow of excessive current from the battery and allow only 2mA current through the resistor. Smart Tools is the complete package of 6 individual apps. Resistor Color-coding. In through hole resistors, resistance is caluclated by color bands marked on their body. In this software, you have 8 color codes for tolerance level, which include brown, red, green, blue, violet, silver, gold, and grey. There is 3 coding system for smd resistance: 3-digit SMD resistor system of coding. DavideM. The resistors bands are made of several colour bands which together specify the resistance value, tolerance and sometimes the reliability rate. When we interpret the color using certain formula. Resistor Color Code Chart and Resistance Calculator Resistors have standard colors for identification of the resistance value. For example, if we consider the 6 band resistor as shows in figure above. Resistor color coding uses colored bands to easily identify resistors and their resistance to resistance. For example, if we consider the 4 band resistor as shows in figure above. The “left-hand” or the most significant coloured band is the band which is nearest to a connecting lead with the colour coded bands being read from left-to-right as follows:Digit, Digit, Multiplier = Colour, Colour x 10 colour in Ohm’s (Ω)For example, a resistor has the following coloured markings;Yel… The colour code was developed n the 1920’s by the Radio Manufacturers Association (RMA). Since you declare the global array of struct item_list, all you need to do to form the significant figure is to use item_list as a lookup-table to find the index for the band-color entered. Depending on how many color uses to indicate the resistance, there are one band resistor, 3 band resistors, 4 band resistor, 5 band resistor and 6 band resistor. Resistor color code. Theory and formula. It uses printed circuit board ot connect traces. One band resistor calls zero ohm resistor. The standards for color coding registers are defined in international standards IEC 60062. So, colour bands are printed on them to represent the electrical resistance. Hence, the colour red represents a multiplier factor of 102. There are … Black color uses to indicate this type of resistor. A 100% FREE Resistor Color Code Calculator. Now if we put these values to the 4 band resistor color coding formula, we get, R = (20.9 – 23.1 ) Ω   [5% of 22 is 1.1]. The color bands are displayed as: YELLOW, VIOLET, ORANGE and GOLD. C is the third band and third significant digit. Three (3) Band Resistor / Resistance Color Code Calculator. The color bands 4-digit SMD resistor system “ EIA96 SMD resistor system “ also check 100k ohm resistor color code RESISTOR COLOR CODE GUIDE 2 0 x10,000 10 % 20 x 10,000 = 200,000 1,000 = 1K Resistor = 200 K with a 10 % Tolerance+-First Band Second Band Multiplier Band Tolerance Band Equation The Gold or Silver band is always placed to the right. We can indicate the first ( 1 ) band as A, second ( 2 ) band as B,  third ( 3 ) band as C and forth ( 4 ) band as D. Therefore, D is the forth band and tolerance ( for gold, it is 5% and for silver it is 10% ). Theory Periodic Table Coding Electronics Color Periotic Table Colour Consumer Electronics Programming The resistor value is read from the left to right. The resistor colour codes can be remembered with the help of mnemonic device “BB ROY of Great Britain had a Very Good Wife,” the capital letters represent the first letters of the colours and their positions the digit values. In this article we discuss about resistor color code system. If we can not identity the first color, we can not calculate the right value of the resistor. Online electrical calculator to determine the resistance of three band resistors. Normally four or five band resistors are available in market. One is practical or measures the resistance by ohm meter or multimeter. Because the reistance of this one band is zero or near zero. The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only. As can be seen in the above 4 Band Resistor Color Codes chart, the first two color bands have values of brown = 1, red = 2, orange = 3 and so on.. Color-Coding You might be familiar with the color-coding system if you have ever tinkered with a breadboard. meter. A zero-ohm resistor can be wire wound or it can be surface mount. For example, if we consider the 3 band resistor as shows in figure above. step 2 Apply the corresponding values in the resistance color coding formula Resistance = 57 x 10 6 ± 10% = 57000000 ± 10% = 57 Mega ohm ± 10% Step 3 Find the Tolerance 10% of 57 MΩ = (10/100) x 57000000 Tolerance = 5.7 MΩ Step 4 Apply the tolerence in the formula Resistance = 57 MΩ + 5.7 MΩ = 62.7 MΩ Resistance = 57 MΩ - 5.7 MΩ In the case of resistors, color coding is used to identify a specific resistance value, for example a 100 ohms resistor or a 1 kilo ohms resistor with 5% tolerance. Mainly, For all electronics component, the value of the components prints on the body of the components. This might be the  helpful for those who love to learn electronics, use electronics for their projects and for any competitive exam. This Android app helps identifying the resistance value of resistors used in all kinds of electronics. Q1) Determine the resistance of the given resistor with the given colour sequence (Red, Green, Red, Gold). Save my name, email, and website in this browser for the next time I comment. In order, the colors are: black, brown, red, orange, yellow, green, blue, violet, gray, and white. The third color band is the multiplier of the first 2 bands. 3. 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. Color Resistance Parameters. Next, use the table given below to see which digits they represent. To use this tool, simply click on a particular color and number and watch how the actual bands on the resistor illustration change. In this system, some specific color prints on the body in a certain manner to indicate the value. Board Resistors. A 5 band resistor shows below: The resistor color coding formula for 5 band resistor is, We can indicate the first ( 1 ) band as A, second ( 2 ) band as B,  third ( 3 ) band as C ,  forth ( 4 ) band as D and fifthe (5) band as E. Therefore. Each color uses as a band has a numerical value or code. It also uses to divide voltage. meter. But a good way to remember the colors and its value in order is by learning this sentence "Bad Boys Run Over Yellow Grass But Valley Girls Walk" Bad - Black - 0 Boys - Brown - 1 Run - Red - 2 (2 % reliability) Select the number of bands, then their colors to determine the value and tolerance of … The Resistor Color Code In most cases, the value of the resistor is indicated by a series of color bands on the component. This color code indicates the value, rating and tolerance. Resistor is a passive electrical component. Among 12 colors, sometime 4 color uses to indicate the resistance. In resistor color code system, 12 color uses to indicate the resistance of a resistor. Instructions & Diagram; This tool is used to decode information for color banded axial lead resistors. Electrical and Electronics Components eLearning, elearningelectronicseducation.blogspot.com. In resistor color code system, we convert the color printed on the resistor body into a numerical value and by resistor color coding formula, finally we calculate the resistance of the resistor. These colour bands are known as resistor colour code. When we take a resistor in our hand and start calculating using resistor color code. The difference from 4 band resistor is that, it has an extra significant band (3rd band ). And the sentence is : Every capital letter of the sentence indicate the first letter of color in  order and also we can remember the code in order. So if the colour of this band is Red (representing 2), the value given is 10. Now if we put these values to the 3 band resistor color coding formula, we get. 3 x (100) = 10.3 kΩ with ± 5% Tolerance 100 ppm/°C. Instructions & Diagram; This tool is used to decode information for color banded axial lead resistors. Resistor Color Code Chart and Resistance Calculator. It is important to note that the band next to the tolerance band represents the multiplier. The tolerance band is usually gold or silver in colour and is placed a little further away from the other bands. All leaded resistors with a power rating up to one watt are marked with colour bands. In order to limit currents in the require value, we need to use a resistor that has the required resistance. But if the body of the components are not big enough to print the value on the body of the components. 5 Band Resistor Color Code Calculator 6 Band Resistor Color Code Calculator. Resistor values are often indicated with color codes. ... Resistor color calculation. Ohms law uses to calculate the required value of resistance. La calcolatrice per codici colore dei resistori semplifica l'identificazione e la selezione dei valori di resistenza e tolleranza dei resistori a foro passante a 4, 5 e 6 bande. A resistor is one of the most common building blocks used in electronics circuits. In the case of surface mount resistors; since they are so tiny they feature the same coding as on capacitors. Q2) What colour bands would a resistor of resistance value 1000 Ω with a tolerance level ±5% have? There are many different types of resistors available that 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. From the above chart, each color band on the resistor represents a number. This means that the 22 Ω resistor with a tolerance value of 1.1 Ω could range from the actual value as much as 23.1 Ω to as little as 20.9 Ω. Resistors are usually very tiny, and it is challenging to print resistance values on them. Check out All About Circuits Resistor Color Code Calculator, a handy tool for reading resistor color code values. So the final formula you can use to calculate resistance: Resistance = ((10x + y) z) (p/100) (Unit- Ohm) Example of Resistor Colour Code: Consider, a resistor is having four different colour bands red, brown, orange, and gold respectively as shown in the below diagram. This formula can be changed according to number of color band. The colour code was developed n the 1920’s by the Radio Manufacturers Association (RMA). Your email address will not be published. Install. For example, to calculate 1.2MΩ, the resistor shows Brown Red Green colors (read from left side to right). Put the larger group on the left and read the resistor from left to right. If a gold or silver color band prints on the at any side of the resistor (usually 4 band ), it is definitely the tolerance band and the last band on the resistor. 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