Not all resistors are the same. Growth in new markets like high-power LED lighting highlights the importance of understanding all of an application’s aspects before correctly and safely specifying the right type of resistor. All LEDs require some form of current limiting. Connecting an LED directly to the power supply will burn it out in a heartbeat. Overdriving, even briefly, will significantly reduce it's life and light output.
Fortunately, driving a single or a string of low current (20-30 mA) LEDs is a simple task - adding a small resistor in series is the easiest and cheapest way to limit the current. Keep in mind however, that high current (above a few hundreds of mA) LEDs are tougher to drive, and while they can be operated with a series resistor, to minimize power loss and ensure reliability, it's advisable to use a more expensive switching current regulator.
Our LED calculator will help you determine the value of the current limiting series resistor when driving a single or an array of low-current LEDs. To get started, input the required values and hit the "Calculate" button.
The program will draw a small schematic, display the calculated resistance and will tell you the value and color code of the nearest lower and higher standard resistor. It will calculate the power dissipated by the resistor and LED(s), the recommended resistor Wattage, the total power consumed by the circuit and the efficiency of the design (Power consumed by the LED(s) / Total circuit power consumption) x 100).
Bhagwati Lighting Industries is one of the biggest supplier for LED Resistence. All LED required different types of LED Resistence. Contact us to know how to calculate and use these resistence in your led tubes or bulbs.
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