No.
It will get you in the ball park but that's it. LDs are very sensitive devices, some people have had some luck slapping them in a minimag but othres have fried them in the process of hooking them up.
Each LD can have a different voltage current curve. The curve is very steep (or shallow depending how you plot it). What that means is that for a VERY SMALL change in voltage you will get a VERY LARGE change in current. In addition, as the LD heats up, the curve shifts so an applied voltage that resulted in a current that was safe when the LD was cold can result in a burned out LD when it gets hot.
Unless you don't mind the risk, I recommend driving them with a current source. There are several examples posted on this forum.
It will get you in the ball park but that's it. LDs are very sensitive devices, some people have had some luck slapping them in a minimag but othres have fried them in the process of hooking them up.
Each LD can have a different voltage current curve. The curve is very steep (or shallow depending how you plot it). What that means is that for a VERY SMALL change in voltage you will get a VERY LARGE change in current. In addition, as the LD heats up, the curve shifts so an applied voltage that resulted in a current that was safe when the LD was cold can result in a burned out LD when it gets hot.
Unless you don't mind the risk, I recommend driving them with a current source. There are several examples posted on this forum.
photongeek said:Is this online calculator sufficient for determining the proper current limiting resistor for these LD's?
http://ledcalc.com/