Resistor calculation for LED. Calculate the resistor for each LED is quite simple. At the beginning is necessary to determine the voltage which is supplied to the LED. Next on the directory or datasheet to know the nominal LED current and the nominal voltage of the LED. First, it is necessary to determine how much you need to pay a voltage across the resistor. It is equal to the difference between the power supply voltage and LED. Then you must perform a calculation resistance damping resistor. To do this, the voltage across this resistor divided by the rated current of the LED. The last point you need to calculate the power dissipation of the resistor. It is directly proportional to the square of the resistor voltage and inversely proportional to resistance. As can be seen from the above is sufficient to know only three formulas. With them, you can easily and quickly perform a calculation of the resistor for LEDs of any type at any input voltage without the use of a variety of online calculators.
Donate:
QIWI: +380955505711
23 авг 2016
