Download software led resistor calculator for free. Led resistor calculator free download windows version. Use this tool to calculate the resistance required to drive one or more seriesconnected leds from a voltage source at a specified current level. Led series current limiting resistor calculator useful when designing circuits with a single led or seriesparallel led arrays for both the common smallcurrent 20ma leds and the more expensive, high power leds with currents up to a few amperes. A red led typically has a forward voltage drop of approximately 1. Software that calculates the resistor value and its power consumption in different leds circuit configurations simple, series o parallel. 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. Voltage drop across led volts desired led current milliamps how many leds connected. The second calculator gives a more accurate value using these figures, which can be found in the suppliers catalogue.
Do you like to work with leds or would start to but youre afraid of burn them out. Resistor color code calculator 3, 4 and 5 band resistors. The download is provided as is, with no modifications or changes made on our side. Resistor calculator calculate the color code of a resistor based on the resistor value and. Selection of resistor for led is not a difficult task only step wise process has to follow which is given in this article. It is too difficult to find the exact value of resistors that you have calculated. Resistor for led calculator power electronics talks. The calculation of how a resistor reduces voltage pressure, is very important in electronics. Just input the indicated values and press the calculate button.
This led calculator will help you design your led array and choose the best current limiting resistors values. Led resistor calculator led series resistor calculator. This file was last analysed by free download manager lib 220 days ago. All in one app with the tools you need to work with leds, resistors and smd leds. I saw from atmega 328p datasheet, that the maximum dc current in a pin should be 40ma. To get started select the type of circuit for your leds, single led leds in series leds in parallel, input the required values and hit the calculate button. This java script was graciously provided by the cool folks at. Software that calculates the resistor value and its power consumption in different led s circuit configurations simple, series o parallel according to the source voltage, the led s voltage and the wanted current value. If you are not able to find the exact value of resistor that you have calculated, then select the next coming value of resistor that you have calculated, for example, if the calculated value is 3.
This calculator is based on the ohms law calculator, but takes into consideration the voltage drop from the led. Determine the color code of a resistor and calculate resistors for led circuits. Our led calculator will help you determine the value of the current limiting series resistor when driving a single or an array of lowcurrent leds. In this software, you have 8 color codes for tolerance level, which include brown, red, green, blue, violet, silver, gold, and grey. The software is periodically scanned by our antivirus system. So far, it only has the led limiting resistor calculator, a little resistor color code utility, and a 4n25 optoisolator multiled resistor calculator. The app have a little builtin database with common led values, but you can also insert custom values. The factors that determine the resistance value of the resistor are the supply voltage, v s, the forward voltage drop needed for the led, v f, and the desired current wanted to pass through the led. When calculating the resistor size that you need to use, you need to find your source voltage, the forward voltage of the led basically, at which point the led starts conducting, and then how much current you want it to conduct. Lets be honest sometimes the best led resistor calculator is the one that is easy to use and doesnt require us to even know what the led resistor formula is in the first place. Led resistor calculator is a tool to calculate suitable series current limiting resistor, its power rating and power dissipation of leds, resistors and.
Mcu 8051 ide integrated development environment for some microcontrollers based on 8051e. The version of led resistor calculator you are about to download is 1. With this event i want to share with you led calculator. Also, resistor for led calculator has been provided which will help you to calculate the led resistor in easy way. The led calculator will display the resistance value, draw a small schematic and show you the color code of the nearest lower and higher. Thank you for downloading led resistor calculator from our software library. Resistor calculator software free download resistor. Calculating resistor values for leds in series instructables.
When you select a resistor for this purpose, choose a device with a power rating between 2 and 10 times the value calculated below in order to avoid excessive. In almost all applications where leds are used, a resistor in series with led is connected. This calculator will help you determine the value of the resistor to add in series with the led to limit the current. The other important characteristic of an led is its forward voltage. The best current limiting resistor calculator for leds. The webpage is not working since javascript is not enabled.
By using this resistor calculator it is very simple to. Use this online calculator to find the value of the current limiting series resistor when burning the single or an array of lowcurrent leds. Led series resistor calculator use this tool to calculate the resistance required to drive one or more seriesconnected leds from a voltage source at a specified current level. The current through the circuit is constant so iled is also the current through the resistor. Resistor color code calculator 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.
Each download we provide is subject to periodical scanning, but we strongly recommend you to check the package for viruses on your side before running the installation. Both of these conversions are available for 4 band, 5 band, and 6 band resistors. 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. All are shown in the same screen in order to make direct comparisons on values. To get started, input the required fields below and hit the design circuit. Resistor led calculator for determining the value of the series resistor. Led resistor calculator learning about electronics. The calculator will display dropping resistor value along with power rating for either running a single led or multiple leds in series from a power source. Calculate the value of a load resistor for a light emitting diode led based on supply voltage and led characteristics. It can show the actual calculated resistor value and the nearest higher standard resistor value. As a bonus, it will also calculate the power consumed by the led.
The wizard will help you pick the resistors make the connections for any number of leds. How to calculate the value of resistor to protect led and. Parallel resistors are connected together in parallel when both of their terminal is connected to each terminal of the other resistors. There also some tips for user to find led forward voltage.
Select the first 3 or 4 bands for 20%, 10% or 5% resistors and all 5 bands for precision 2% or less, 5band resistors. The current setup file available for download requires 56 kb of hard disk space. Led series resistor calculator digikey electronics. Led resistor calculator is the perfect solution for you, bundled with a huge feature set, yet retaining simplicity and ease of use. Office tools downloads led resistor calculator by and many more programs are available for instant and free download. We also encourage you to check the files with your own antivirus before launching the installation. The download version of led resistor calculator is 1. Also, you can cross check your calculated led resistor value is. Download resistor calculator a practical, effective and useful application. The value of the correct resistor for leds in series is the supply voltage pressure minus the total pressure consumed by all off the leds voltage drop across a single led times by the total number of leds, that answer is then divided by the led current electron flow required by the circuit.
The led seriesparallel array wizard is available for those of you who need to do calculations involving more than one led. Then, i came to know that we should also protect the microcontroller pin. The following calculator will determine the unknown series resistor value in ohms for the led circuit shown. The standard resistor values are based on the listing in the digikey catalog. Download resistor calculator for leds serial and parallel 2. Resistor calculator software free download resistor calculator top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. But if you want to know the exact formula for calculating led. Resistor led calculator for determining the value of the current limiting series resistor when driving a single or more seriesparallel of leds. Led resistor calculator will allow you to calculate, with precision, the ideal resistance for the led you would use, also suggesting how many watts it should be. Download software led resistor calculator for free windows. We will see its impact while understanding the led resistor calculator equation and also in the selection of the series resistor.
This led resistor calculator calculates the value of the resistor which you would need in order to produce the desired current to go through the led. Easy led current limiting resistor calculator in 3 steps. Calculator works on windows xp, vista, 7, but you have to install microsoft. The online calculator below allows for the automatic calculation of the necessary current limiting resistor to maximize the useful life of an led. Let us now proceed with important aspect of the tutorial i.
Resistor colour code solver is a featured resistor value calculator which offers both color code to value and value to color code conversions. Download this app from microsoft store for windows 10 mobile, windows phone 8. 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. Led resistor calculator resistor led calculator for determining the value of the current limiting series resistor when driving a single or more seriesparallel of. Most likely, you are viewing using dropbox website or another limited browser environment. Calculator is capable of finding suitable standard e12 10% resistor value and power for one led designs.