Mekkora előtét ellenállást kellene használnom ebben az esetben?

12

Source voltage

3.2

diode forward voltage

700

diode forward current (mA)

3

number of LEDs in your array

design my array

Solution 0: 3 x 1 array uses 3 LEDs exactly

+----|>|----|>|----|>|---/\/\/----+ R = 3.9 ohms

The wizard says: In solution 0:

each 3.9 ohm resistor dissipates 1911 mW

!! the wizard thinks the power dissipated in your resistors is a concern

together, all resistors dissipate 1911 mW

together, the diodes dissipate 6720 mW

total power dissipated by the array is 8631 mW

the array draws current of 700 mA from the source.