Resistor calculation for led circuits single, in series, parallel. The current setup file available for download requires 56 kb of hard disk space. The excel cell formula below calculates the nearest standard 1%resistor value without using a lookup table or macro. Download book 200 transistor circuits talking electronics. Calculator is capable of finding suitable standard e12 10% resistor value and power for one led designs.
The download version of led resistor calculator is 1. Up to 10 sets of resistors may be presented, or as few as one. The calculator is capable of finding suitable standard e12 10% resistor value and power for one led designs. A helpful little utility that allows you to find the value of a standard resistor without memorizing the color codes. Although it is theoretically possible to produce components of any value, in practice the need for inventory simplification has. Office tools downloads led resistor calculator by and many more programs are available for instant and free download. Sometimes we need a resistor value more precice than what is offered in the standard series. For resistor calculator, enter the colors on the resistor above.
Clicking calculate r1 and r2 will find the optimum pair of resistors from the selected range of preferred values, for a. If you want to find out the color bands for a value. Youll find the values for the e6, e12, e24, e48, e96 and e192 series or preferred resistor values in this table. Select the resistor type 4 or 5 bands using the radio buttons. Download software led resistor calculator for free windows.
Instead of using advanced javascript functions that would make the script incompatible with older browsers, i elected to leave the quantization errors. Generally, 5% tolerance resistors are available in e24 and 1% resistors in e96, but this is not a hard and fast rule. The cost of running this website is covered by advertisements. Also, you can lookup the values of your smd resistors supported are 3digit, 4digit e24. This series resistor calculator calculates the total resistance value for all the resistors connected in series. Trusted windows pc download led resistor calculator 1. 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. This page is a web application that design circuits of resistors. This calculator will select the closest standard resistor value, from 1% 5% or 10% standard eia values, calculates the error, and prints out a table of the standard. The third calculator will find a resistor value to place in parallel with a given resistor value to produce a specified total. A more complicated task is to pick resistors to satisfy a ratio.
This calculator supports resistors with 3, 4, 5, and 6 bands. The calculator above will display the value, the tolerance and performs a simple check to verify if the calculated resistance matches one of the eia standard values. Details of the colour code system can be found here in the technical data section. This calculator converts resistor values to or from 5band or 4band colour codes. Download resistor calculator for leds serial and parallel 2. This calculator will help you identify the value, tolerance and temperature coefficient of a color coded resistor by simply selecting the bands colors. You can use our resistor calculator this table will be visible there as well to determine the value of a resistor or the needed color code for a give value. The e series is a system of preferred numbers also called preferred values derived for use in electronic components. The script works with a maximum number of unique resistors, depending on the number of resistor groups. Resistor value and ratio calculator, selects values from standard resistor. Calculate resistor color codes with this handy reference app. To help you and myself find the best matching resistor, i created a interactive table of the defined eseries values. Resistor colour code solver is a featured resistor value calculator which offers both color code to value and value to color code conversions. The app is useful for every maker, engineer, student and arduino or raspberry pi tinkerer when working with electronics.
They are the standard e3, e6, e12, e24, e48 and e96 resistor values. Just add the number of resistors in the first column, and then enter the values of each resistor with selecting the proper unit of resistor value in. There also some tips for user to find led forward voltage. This calculator will select the closest standard resistor value, from 1% 5% or 10% standard eia values, calculates the error, and prints out a table of the standard values for the given tolerance. Resistor calculator has an automatic program update. A voltage divider circuit is a very common circuit that takes a higher voltage and converts it to a lower one by using a pair of resistors. It consists of the e3, e6, e12, e24, e48, e96 and e192 series, where the number after the e designates the quantity of value steps in each series.
Type or electronically paste the text below into any cell other than a1. Apr 23, 20 download resistor color code calculator for free. This program finds tworesistor voltage dividers created from realworld resistor values eia e24 andor e96 with divider ratios closest to some target. Select preferred series optional e12 e24 e48 e96 e192.
Resistor color code calculator 3, 4 and 5 band resistors hobby hour. The tolerance in the dividing ratio, which is not identical to the one of the resistors, is shown in the tolerance column. Preferred resistor values are also calculated, use the radio buttons on each calculator to select the preferred value series to use. With resistor calculator by cstrsk you can calculate easy your resistor value out of the color band from your resistor. Series parallel resistor calculator electronics 2000. This file was last analysed by free download manager lib 228 days ago. The resistor color code calculator identifies the value and tolerance of a color coded resistor given its bands colors. Sep 14, 2018 download resistor calculator a practical, effective and useful application that helps you to determine the color code of a resistor and calculate resistors for led circuits. Quantization errors in resistor values are inherent to javascript. Select the first 3 or 4 bands for 20%, 10% or 5% resistors and all 5 bands for precision 2% or less, 5band resistors. It can also calculate resistor value if it is provided with the relevant colour code. Download resistor calculator a practical, effective and useful application that helps you to determine the color code of a resistor and calculate resistors for led circuits.
Just enter 2 known values and the calculator will solve for the others. Online calculator for finding a combination of resistors for a custom value. The 120 ohm resistor has a value ranging between 110 and ohms. Enter known values then click on the appropriate calculate button. In this software, you have 8 color codes for tolerance level, which include brown, red, green, blue, violet, silver, gold, and grey. This free resistor calculator converts the ohm value and tolerance based on resistor color codes and determines the resistances of resistors in either parallel or series, as well as the resistance of a conductor. Calculator works on windows xp, vista, 7, but you have to install microsoft. Following this logic, the preferred values for 10% tolerance resistors between 100 and 1,000 ohms would be 100, 120, 150, 180, 220, 270, 330 and so on rounded appropriately. Experiment with the voltage drop and ohms law calculators, or. For example, for e12 has twelve steps between any power. Different sets of resistor values may lead to the same identical lowest error. Led resistor calculator is a tool to calculate suitable series current limiting resistor, its power rating and power dissipation of. It is too difficult to find the exact value of resistors that you have calculated for making electronics project and circuits etc as here is an example of such situation that how to calculate the value of resistor for different leds circuits or how to calculate the exact value of burnt resistor and find the standard value of smd resistors. Led resistor calculator lies within office tools, more precisely calculators.
This tool is used to decode information for color banded axial lead resistors. This is often done to set the division ratio in a voltage divider, for example. Download calculator for parabolic satellite dish antenna design. Led resistor calculator free download windows version. The most commonly used eseries is undoubtedly the e12 series. The download is provided as is, with no modifications or changes made on our side. Also, you can lookup the values of your smd resistors supported are 3digit, 4digit e24 series, 4digit e96 series and eia96.
Excel formula calculates standard 1%resistor values. Resistor value and ratio calculator nightshade electronics. Resistors come in variations with 4, 5 or more color bands where a 4band color code is most common. Type the resistance in the box below and select the units and optionally the tolerance from the dropdown boxes. The formula for calculating the output voltage is based on ohms law and is shown below. 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. It will then provide you with the most suitable and closest resistor of the e series e12, e24, e48 etc. Resistor tolerance and overall divider string resistance are taken into account. The third calculator will find a resistor value to place in parallel with a given resistor. Displaying the closest resistor of the e series and renard numbers.
If you cannot find the exact value of the resistor for the given circuit, use pad2pads standard resistor value calculator to calculate the closest resistor value for different eia series resistors. In both of these calculations, the color code scheme is applicable for 4, 5, and 6 band resistors. The industry standard resistor color code is used to identify the resistance value of resistors used in all kinds of electronics. Calculate resistor size for leds or identify resistors by code or color. Selecting resistor parallel or series to obtain a given value, by in3otd. If you like it please feel free to a small amount of money to. Standard resistor tolerances are typically e6, e12, e24, e48, e96 and e192. Resistor color code calculator calculate 4 and 5 band. Ohms law wheel e24 resistor sizes awg wire sizes resistor colour chart. Also includes and ohms law calculator and a resistor color code quiz currently in the process of being implemented.
The eia e number is the number of logarithmic steps. It will also calculate the minimum and maximum values based on the tolerance ratio. Electronics 2000 series parallel resistor calculator. Occasionally e24, e48, e96 or even e192 series values may needed for high accuracy and close tolerance requirements. Download software led resistor calculator for free. Led resistor calculator is the perfect solution for you, bundled with a huge feature set, yet retaining simplicity and ease of use. Use this utility to find the optimum set of resistors for a circuit of resistors from the resistor sequence. The last two bands that are on 4 and 5 colored resistors are multiplier and tolerance. Resistor color code calculator 3, 4 and 5 band resistors. Instead of using advanced javascript functions that would make the script incompatible with older browsers, i.
Both of these conversions are available for 4 band, 5 band, and 6 band resistors. If the resistor is 4 colored, leave the 3rd band and temperature coefficient empty. Led resistor calculator is a tool to calculate suitable series current limiting resistor, its power rating and power dissipation of leds, resistors and effective current passing through the led. In this article youll find an interactive table in which you can find the standard resistor values, as used in electronics, and defined by the iec.
Generally, 5% tolerance resistors are available in e24 and 1% resistors in e96, but. Download resistor calculator for leds serial and parallel toni december 29, 2015 april 7, 2010 calculator, download software that calculates the resistor value and its power consumption in different leds circuit configurations simple, series o parallel according to the source voltage, the leds voltage and the wanted current value. Resistor calculator compute the best resistors combination to. Online calculators, software downloads, technical data, beginners guide, pinouts. Download resistor color code calculator 4, 5 and 6 band.
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