Confused about the actual resistance of the huge pool of resistors you have. Voltage drop across led volts desired led current milliamps. Led calculator current limiting resistor calculator for. Led resistor calculator free download windows version. Office tools downloads led resistor calculator by and many more programs.
This question gets asked every day in answers and the forums. How to calculate the value of resistor to protect led and. Windows vista ultimate x64, windows xp, windows2000. As another feature the program can calculate the required resistor value for led circuits single led, series connection and parallel connection considering the supply voltage, the voltage drop across the leds as well as the current of the leds.
It can show the actual calculated resistor value and the nearest higher standard resistor value. Just input the indicated values and press the calculate button. It takes just a few seconds to install, and it is enormously prompt in performing its work. Simply add color to all the bands in a resistor and get your answer. Then, i came to know that we should also protect the microcontroller pin. Resistor calculator x 64bit download x64 bit download freeware, shareware and software downloads. 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. Resistor calculator works in both full installed mode or can only run in standalone executable mode.
Calculate the value for a single led and connect all the led resistor pairs in parallel. Calculate the color code of a resistor based on the resistor value and the other way round. As a bonus, it will also calculate the power consumed by the led. A calculator for your led series resistor is included. Download software led resistor calculator for free windows. Download resistor calculator for leds serial and parallel 2. Safe pick is a resistor with power rating of watts. The current through the circuit is constant so iled is also the current through the resistor. 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. Windows vista, windows vista x32, windows vista x64, windows 7 x32, windows 7 x64, windows 8. So ive put together several different ways to figure it out. I saw from atmega 328p datasheet, that the maximum dc current in a pin should be 40ma. Download this app from microsoft store for windows 10 mobile, windows phone 8.
Somewhat you can say that it is based on the value of the resistor. The best current limiting resistor calculator for leds. Voltage divider calculator, led resistor calculator, battery life calculator, and of course the ohms law calculator. It comes with information about voltage values commonly used in led infrared ir, red, orange, yellow, green, white, blue and ultraviolet. The resistance required is equal to the supply voltage minus the forward voltage times the number of leds, divided by the forward current. Calculator works on windows xp, vista, 7, but you have to install microsoft.
The wizard will help you pick the resistors make the connections for any number of leds. It will then provide you with the most suitable and closest resistor of the e series e12, e24, e48 etc. To get started, input the required fields below and hit the design circuit. This java script was graciously provided by the cool folks at. The current setup file available for download requires 56 kb of hard disk space. Resistor calculator software free download resistor calculator top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. This led calculator will help you design your led array and choose the best current limiting resistors values. So far, it only has the led limiting resistor calculator, a little resistor color code utility, and a 4n25 optoisolator multi led resistor calculator. Use this resistance calculator to figure what resistor value is best for your leds. Resistor calculator for windows 10 free download on 10 app. All are shown in the same screen in order to make direct comparisons on values. Resistor calculator for pc download windows 7, 8, 10, xp.
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. Download software led resistor calculator for free. Download this app from microsoft store for windows 10, windows 10 mobile, windows 10 team surface hub, hololens. There also some tips for user to find led forward voltage. But connecting an led directly to a power source can cause an led to burn out.
Calculator is capable of finding suitable standard e12 10% resistor value and power for one led designs. As another feature the program can calculate the required resistor value for led circuits single led, series connection and parallel connection considering the supply voltage, the voltage drop across the led s as well as the current of the led s. To calculate the resistor needed for a simple led circuit, simply take the voltage drop away from the source voltage then apply ohms law. Different calculators in this list calculate resistor value of different numbers of band resistors, including 3 to 6 band resistors. Freeware resistor calculator at download collection. With this musthave utility, you dont ever have to manually lookup the color codes and calculate their values this is. This calculator is based on the ohms law calculator, but takes into consideration the voltage drop from the led. Led resistor calculator, makes use of ohms law to find the perfect resistor value for your led circuit. Resistor calculator has an automatic program update.
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. You have to utilize a current limiting resistor in series with the led for protection. Use our resistor color code calculator to find out the color bands for different 20%, 0. Download this app from microsoft store for windows 10, windows 8. Also get the value of the current pass through the led. Calculator works on windows xp, vista, 7, but you have to. The calculator is capable of finding suitable standard e12 10% resistor value and power for one led designs. The led seriesparallel array wizard is available for those of you who need to do calculations involving more than one led.
Led current limiting resistor calculator amplified parts. Using the led current calculator and substituting a 510 ohm resistor for the 390 value gives us a 15. New resistor value calculator is an accessible and easytouse instrument that has been developed in order to compute a resistor value by knowing its colors. Download x24 led calculator led limiting resistor calculator. Trusted windows pc download led resistor calculator 1. I found one but it didnt have resistor wattage, only resistance. Resistor calculator for windows free downloads and. Frankly, the color code can be provided by the user and even the program has the extensive feature which can show the resulting value of the resistor. Led series resistor calculator digikey electronics. Simple resistor calculator web site other useful business software ftmaintenance is an easytouse, yet robust cloudbased cmms solution that automates maintenance tasks and connects you with powerful data for smarter maintenance management. Remember, that led light output is fairly linear as a function of current ma. Resistor calculator software free download resistor.
Calculating the value of the resistor will require gathering a few bits of information about your led from its data sheet. Resistor calculator download software resistor value calculator v. Resistor led calculator for determining the value of the series resistor. Led resistor calculator single led leds in series leds in parallel voltage drop is usually 1. This tool is a useful reference that displays the resistor value based on user input. Led resistor calculator, calculates the right resistance value for your led. To run our 2x3 led at full mcd output we would need a 390 ohm resistor to give 20ma at 11. Led resistor calculator lies within office tools, more precisely calculators. The resistor calculator is a simple and easy to use tool which helps in finding out and knowing the basic color code of resistors. The blue led has a typical forward voltage drop of 3. To determine the correct resistor value, ohms law is used to derive a formula for the resistor. The best thing about this tool is it is totally free of cost for the users around the globe. 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.
It can also calculate resistor value if it is provided with the relevant colour code. The app have a little builtin database with common led values, but you can also insert custom values. However, if you are using a 5 v supply voltage, then a 90. Office tools downloads led resistor calculator by and many more programs are available for instant and free download. The standard resistor values are based on the listing in the digikey catalog. Led current limiting resistor calculator using the datasheet of the led and the voltage used to power the led, this calculator can determine what resistance in series is required to get your led functioning and prevent it from burning out. This calculator will help you determine the value of the resistor to add in series with the led to limit the current. Here is a list of best free resistor color code calculator for windows. This led calculator will help you calculate the resistor values you will need when designing a seriesparallel led array circuit.
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