Hello, I am working on a LED project that involves the use of three 3W LEDS. These LEDs are being driven at about 700mA (I believe). My source is 12V (8 AA's in Series) and I am using 16 Ohm resistors (one for each LED) capable of handling at least 5.4 watts ( ~15 Ohm resistor in series with a .47 Ohm, 5W resistor). When I turn the LEDs on, the .47 Ohm, 5 Watt resistor begins to slowly smoke after about 15 seconds. Why is this? Is this normal for the first few times the circuit is turned on? I thought the reason for the 5.5 Watt resistor was to handle this heat load. How do the watt ratings of resistors add in series and parallel? If anyone can help me figure out what is wrong, I would greatly appreciate it. Thanks!