This standard describes the marking codes for resistors and capacitors. Identifying the value will become easy with a little practice, as there are only a few simple rules to remember. Resistor colour code and resistor tolerances explained. 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. Resistor color codes color codes electronics textbook. The color code consists of various color bands, which indicate the resistance values of resistors in ohms as well as the tolerance rating. Sep 28, 2015 resistor color code is used to indicate the value of resistance. The second color band comes next then the third color band. This band is the first one closest to one end of the capacitor. Find the value and tolerance of a 4 band, 5 band, or 6 band resistor with our resistor color code calculator or download our color code pdf for reference. The first two bands represent the most significant digits of the resistance value. The resistors in your parts kit have colored stripes that indicate what their resistance values are. Resistor color code and types of resistors idc technologies. There are basically three types of color band resistors.
Generally the three types of resistor color coding used are 4 band, 5 band, and 6 band color codes. The coding is defined in the international standard iec 60062. Given 10 different sets of color bands, determine the resistor values and tolerances. Color coding and sets of resistors electrical symbols. Color coding a capacitor the color band of the condenser is in one end of the condenser body. Resistor color code system resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors cylindrical with enlarged ends of the axial lead type. Starting from the other end, identify the first band write down the number associated with that color. Practically all leaded resistors with a power rating up to one watt have a pattern of colored bands that are used to indicate resistance value, tolerance, and sometimes even the temperature. The attractive rainbow colors adorning most fixed resistors serve a purpose beyond catching your eye. The 4band code is used for marking low precision resistors with 5%, 10% and 20% tolerances. For the purpose of calculating the value of the resistor of a particular resistor you. Steps in determining the value of the color coded resistor hold the resistor.
Here we leave you an illustration of the color codes of resistors and capacitors and their different types of recordings in the body of the componenetees for their correct reading. Resistor color code 6 band color code 5 band color code 4band color code gry8. Resistors mainly added to those circuits where they complement the active components like integrated circuits, opamp, microcontrollers etc. Experiment 1 resistor color code and use of the ohmmeter. A resistor is an electric element that limits the flow of the electric current into an electric circuit. Resistor color code chart resistors are devices that limit current flow and provide a voltage drop in electrical circuits. Resistor color code and types of resistors introduction to resistors. Note that the colorcode system for capacitors is very similar to that of resistors except there is a fifth band representing the temperature coefficient. When looking at the chart, note the illustration of three round resistors with numerous color code bands. The color code starts near the edge of one side of the resistor and consists of several. In our previous post we saw that there are many different types of resistor available that can be used in both electrical and electronic circuits. Decoding resistor markings decoding the colour bands. Throughhole resistors use a colourcoding system and smd resistors have their own valuemarking system.
The other four fall into the same order as mentioned for resistors. Updated resistor color code pdf chart resistor color. A separate code, the 25pair color code, is used to identify wires in some telecommunications cables. Resistor color code is used to indicate the value of resistance. Choose resistors so that you get several from each of the possible third band colors gold, black, brown, red, orange, yellow, green. Colorcoding is standardized by the electronic industries association eia. Working of resistorsresistance,unit,symbol,types,colour. If there is no tolerance band, then find the side that has.
The five and six band resistor colour code is more commonly associated with the high precision 1% and 2% film types while the common garden variety 5% and 10% general purpose types tend to use the four band resistor colour code. Check out all about circuits resistor color code calculator, a handy tool for reading resistor color code values. In this article, we are going to explain resistors, color coding, and types of resistors in detail. The standards for color coding registers are defined in international standards iec 60062. The basic unit for resistance of your ohmmeter is the kiloohm k. Resistor color code chart handout pdf teachengineering. This system was employed for resistors when the surface area was not sufficient to print the. The same colour code system has also been used on some mica and ceramic capacitors in the past.
Learn about sample questions resistor color code more easier in our website electrostudy. Composition resistors are color coded to indicate resistance values or ratings. The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. Arnido jr instructor, colegio san agstin bacolod 2. Different types of resistors and its color code calculation in electronics resistors are the most commonly used components in electronic circuits and devices. Do you remember what the colors on your resistor means. Many electrical components use some form of color coding scheme to indicate their value.
The use of color bands on the body of a resistor is the most common system for indicating the value of a resistor. Working of resistors resistance in series and parallel, definition unit,symbol,types wire wound,carbon composition,colour coding,uses. Working of resistorsresistance in series and parallel, definition unit,symbol,types wire wound,carbon composition,colour coding,uses. This standard describes color coding for axially leaded resistors and numeric code for smd resistors. Use the resistor color code chart below to understand how to use the color code system. 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. Resistors use preferred numbers for their specific values, which are determined by their tolerance. Ppt understanding the resistor color code powerpoint. Resistor color coding 4 band, 5 band basic electronics. Pay very careful attention to the upper right region of the dmm see. Resistor color codes pdf download build electronic circuits.
A resistor is a component that resists the flow of electricity. Resistors are available in many different values, shapes, and physical sizes. Look for the 3 colors which they are near on each other. There are a number of ways in which this can be indicated. Because carbon resistors are physically small, they are color coded to identify their resistance value in ohms. This system is employed for resistors when the surface area is not sufficient to print the resistance value for the past time. Colors are assigned to all the numbers between 0 and 9, and the color bands basically translate the numbers.
Resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors. There is a different color combination for each resistance value. The resistor nominal value is encoded in the color code in powers of ten notation. The main purpose of a resistor is to maintain specified values of voltage and current in an electronic circuit. Thus resistors play an important role in running circuits. So, colour bands are printed on them to represent the electrical resistance. Color coding is standardized by the electronic industries association eia. Color coding is used in electronics to identify between different components. All leaded resistors with a power rating up to one watt are marked with colour bands. Weve created a simple chart to explain resistor color coding for you. The table can also be used to specify the color of the bands when the values are known.
In this exercise you will practice reading and converting resistor color. First find the tolerance band, it will typically be gold 5% and sometimes silver 10%. The quiz and worksheet help you evaluate your knowledge of color codes on resistors. Different types of resistors and color coding in electronic. Resistor color code 1st nd digit 2 digit 3rd digit multiplier stripe tolerance 4th stripe black 0 0 0 x 1 brown 1 1 1 x 10 1% red 2 2 2 x 100 orange 3 3 3 x 1 000 yellow 4 4 4 x 10 000 green 5 5 5 x 100 000 blue 6 6 6 x 1 000 000 purple 7 7 7 grey 8 8 8 white 9 9 9 gold x 0. The use of color bands on the body of a resistor is. A free powerpoint ppt presentation displayed as a flash slide show on id. Resistor color code system how to read the resistor code. Imagine how many blind technicians there would be otherwise. Zero ohm resistors are made as lengths of wire wrapped in a resistorshaped body which can be substituted for another resistor value in automatic insertion equipment.
Probably the most common electrical color code is the one that indicates the nominal value of resistors. There are other series like e96 and e192 for more special applications. Practically all leaded resistors with a power rating up to one watt are marked with color bands. On some of the larger wirewound resistors the value can be printed onto it in the normal way.
The temperature coefficient is more commonly marked, especially on quality 5band resistors, as it starts to become an important factor for precision components. The first three bands determine the resistance and the fourth band gives the. To form resistor networks it can be connected in various parallel and series combination. This exam will test your ability to decode a resistor s color code and calculate the resistance and tolerance of a resistor. Colorcoding identifies the nominal value and tolerance of most resistors. For a resistor with temperature coefficient of 200 ppm, for example, a change in temperature of 50c causes a value change of 1%.
The color helps us know the resistance of the resistor without measuring it. Because carbon resistors are physically small, they are colorcoded to identify their resistance value in ohms. Presently used color coding scheme is token one which is used for automation. In this exercise you will practice reading and converting resistor color codes to their numeric equivalent and viceversa.
These colour bands are known as resistor colour code. 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. There are four color band and the first color is located nearest to the end of the body. Colour coding is used in r,l,c, components in electronic industry to mark values on components where printing is not convenient, and also where it is desired to be able to read value even after mounting the component on pcb.
Resistor color code or how to read those little resistors. Color coding of resistors and capacitors reference. An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. The value or the resistance of a resistor is obviously very important. Resistor color code chart understanding resistance color coding. Take the quiz beforehand to check what you already know, and. Jul 07, 2016 resistor color codes pdf download july 7, 2016 by oyvind nydal dahl 2 comments. The 4th color band indicates the resistors tolerance and is normally gold.
Decoding the colour bands throughhole, axial resistors usually use the colourband system to display their value. Resistors are usually very tiny and it is difficult to print resistance values on them. Resistor values are often indicated with color codes. There are several bands to specify the value of resistance. This skill is needed by technicians, engineers, and some hobbyists. Resistors come in a range of tolerances but the two most common are the e12 and the e24 series.
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