Exerd
0
- Joined
- Jan 2, 2010
- Messages
- 448
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- 28
What is your set-up? Does the diode have a pretty good heat-dump?
I noticed that these diodes can be temperature sensitive. ElektroFreak reported this, too.
During my testing, I've found that temperature can make a huge difference in output power. For example, when cool, the laser can hit 980mW easily. When warm, the laser will peak around 960mW and settle at ~920mW. After a ~3-4 minute on-cycle, the laser may output 880-900mW.
So if each current setting is tested one-after another, it may be helpful to allow a sufficient cool-down period between tests so that the numbers are not skewed by temperature variation (not necessarily saying that they are, of course).
I power on my Instek 3030DD until mW reaches max for that test range, then power down. Then I sit for about 20-30 seconds before next range test. I feel heatsink during tests, as I am aware of heat efficiency loss. On final test, heatsink is mildly warm. Not very warm at all.
I just set a Flexdrive to 940mA in an 18650 host and it is powering the diode just fine at over 750mW. The Flexdrive is not getting very hot for short cycles like I do. I have a Microboost in the mail, and a 2A driver.
These diodes have a yucky output.
I'm still largely a 12X fan.