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Chinese Laser Taking 5 Amp?

AquaticHarpy

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Joined
Sep 1, 2020
Messages
40
Points
8
I recently acquired a failed laser from a supposed 20W engraver, I took my bench and used it to directly power the diode and it worked, pulled amperage from very low voltage and had a bit of current draw fluctuation, but it worked. Nowhere near as powerful as my 1.5w purple, but it burnt wood a little, the problem is though, it's a massive hot diode, at 2.1A I got a large increase in brightness and the little module let me take it to 5Amps without giving up. Anybody know what's up with this? It has a lense that needs manually adjusted and a huge diode, if anybody knows anything about this diode, lemme know!
 

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Cyparagon

Well-known member
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Sep 12, 2007
Messages
9,808
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20W input maybe. I don't see any electronics, and by your experimentation we have to conclude that's a bare diode. If it's like the other 6-7W diodes, you should keep it somewhere closer to 4A, but there's of course a trade-off between power and life-span.
 

AquaticHarpy

Member
Joined
Sep 1, 2020
Messages
40
Points
8
Bare diode, but this time it's in a heatsink, with a fan! I'll keep a 4A max on it for future tests, but it's definitely lacking the power I feel it should have.
 




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