400mW direct driven LPC-815

[jakeGT]

Direct driven lpc-815 I bought from laser_freak.
Using an aixiz glass lens, and an 18650 battery. in the video it shows a 392mW peak, but I've seen 410mW with this.
The videos crappy because I had to hold the laser in the heatsink to hit the thermopile surface, and hold my safety goggles on because the dog chewed the ear pieces off.

 

[anselm]

I'll give it 20 minutes total runtime before it rolls over and dies.

 

[Eudaimonium]

I'll give it by the next turn on

Why, for God's sakes! You've got a really good and efficient diode there and you're killing it for apsolutely no reason.

Make a driver for it at say, 450mA and keep it there.

 

[daguin]

Direct driven lpc-815 I bought from laser_freak.
Using an aixiz glass lens, and an 18650 battery. in the video it shows a 392mW peak, but I've seen 410mW with this.

Could this be the crystal beginning to deteriorate already :eg:

I think that Louis ran one direct drive for awhile :tinfoil:

I guess this is the result of how cheap these are now :na:

Peace,
dave

 

[jakeGT]

LOL! It only cost 5 bucks, and I wanted to experiment and what not.
I've counted how many I have done between today and last night so far.
24 direct drives, at ~10 seconds each. Hasn't degraded 1mW yet!!

So I have put it up, and am saving it until I go to radio crack and get a lm317

The only reason It was 392mW in the vid was because It took me a second or two after turning it on to get it actually on the thermo and focused.

I have it put up now, and will keep it alive until I have a suitable driver

 

[daguin]

One thread is enough Jake

Peace,
dave