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28 wrz 2024 · This calculator finds the series resistor value to be used with an LED and a +12 Volt supply. This resistor limits current into the diode and is required for proper operation. It also provides the power dissipation in the resistor – an important number for resistor selection.
An LED has very low forward resistance compared to an incandescent bulb. Adding resistors in series with an LED will lower the current, not increase it. In simple analog systems, the alternator or generator lamp 'indicates' by balancing 2 voltages: 1 from the battery and 1 from the alternator.
5 paź 2024 · Use this calculator to determine the appropriate resistor value for your LED circuit. Enter the supply voltage, forward voltage, and forward current to calculate the recommended series resistor.
This LED calculator will help you calculate the resistor values you will need when designing a series/parallel LED array circuit.
10 sie 2023 · Aby zapewnić bezpieczne i prawidłowe działanie diody LED 12V, należy dobrać odpowiedni rezystor. Rezystor jest elementem elektronicznym, który służy do ograniczenia prądu w obwodzie. Wybór odpowiedniego rezystora zależy od mocy diody LED i napięcia zasilania.
2 gru 2010 · You need to be sure the wattage (power) rating for your resistor is sufficient for the power being used. The equation for power is: Let's say you are using the LED above with a supply voltage of 12V, an LED forward voltage of 3.9V, and a total forward current of 1400mA.
DigiKey's LED series resistor calculator uses supply voltage, forward voltage, and forward current values to help you identify the correct series resistor.
