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Select the number of bands for your resistor. Vishay’s Color Code Calculator helps users determine the value and tolerance by identifying each color of a 3, 4 or 5 color banded resistor.
Use this calculator to find out the ohm value and tolerance based on resistor color codes.
The chart shows the calculated values for when the supply voltage is 3.3 V, 5 V, 9 V, and 12 V. These are the typical voltages used by hobbyists for their projects. Just use the standard resistor values chart to find the nearest highest value available.
This calculator will help you identify the value, tolerance and temperature coefficient of a color coded resistor by simply selecting the bands colors. It will also calculate the minimum and maximum values based on the tolerance ratio. This calculator supports resistors with 3, 4, 5, and 6 bands.
4 Απρ 2023 · If the LED forward voltage value is a maximum value and your 75 ohm resistor was low in the tolerance band, you will definitely see increased current. For example, if your actual forward voltage drop is only 3.1V and the resistor is actually 71 ohms, you will see more than 28mA.
23 Ιαν 2024 · Our LED resistor value calculator is your go-to resource for efficient and precise results, ensuring the optimal performance and longevity of your LED circuits while demystifying concepts like what is Ohm's law and how to calculate Ohm's law.
5 Μαΐ 2018 · To determine the minimum resistance value required, we need to know the largest possible voltage drop across the resistor along with the smallest maximum current through the resistor. In addition, we want to account for the smallest resistance value possible based on its tolerance specification.
