so i tested them out ,i found out that at 3v it takes about 45ma, and does not require a resistor(led voltage=power source).
yes this is very unstable i dunno why
the heat up like crazy even at 3v sometimes.
oh yes , the guy from whom i bought said they were 0.5 watt, and yes this is very unstable i dunno why, also they are very fussy about what current they need, the heat up like crazy even at 3v sometimes.
i tried figuring this out by a potentiometer but i burned it.........
The 0.5w power rating is a maximum allowable value. You wouldn't want to operate at that value.Don
and (2) to have a ballpark value from which to start calculating the series resistor.