Hi, im using the arduino to turn on a relay and complete a curcuit connecting the USB to a curcuit like this one :
The IR's are TSHA203 , 100mA , Vr -5V, 180mW,
Now one thig i dont understand is how 5 * 0.1 = 0.5 W and not 0.18 W, so I assumed that it could work on lower values like 2 volts or 50 mA and these are the maximum ones.
...But i guess i was wrong couse the resistors are overheating.Can you guys point me in the right direction?
Thanks!
