Bluefan
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- Aug 15, 2009
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I have a small problem, some/most A140 diodes I have seem to be a bit inefficient. I picked two average diodes and put them in a knife edge setup and I only get 2.5W at 1.6A, dropping of fast to something like 2.4W and below as it heats up. Running ti at 1.7 or 1.8A hardly gets more output of the diodes. I'm using the original lenses from the projector. The beams reflect of a single mirror, this is probably a ~13% loss, but that doesn't explain all te loss. I expected to more out of these diodes.
A while back I even killed a diode around 1.8A (LED'ed), supposedly an efficient diode. Anyone an idea what's happening or am I just overestimating these diodes? I see a lot of high power builds, nearly all with higher efficiency than mine My diodes are properly heatsinked so that shouldn't be the problem. I don't use the popular 405-G-1 lens, but in this thread the original lens actually performed well. Any one got an idea about this?
A while back I even killed a diode around 1.8A (LED'ed), supposedly an efficient diode. Anyone an idea what's happening or am I just overestimating these diodes? I see a lot of high power builds, nearly all with higher efficiency than mine My diodes are properly heatsinked so that shouldn't be the problem. I don't use the popular 405-G-1 lens, but in this thread the original lens actually performed well. Any one got an idea about this?
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