SUPER FREAK "445nm diode"

rhd said:

Yep, they both were.

I would be interested to know what the point of dimming would be. I suspect it is right around 2.5A (for these two diodes). It was pretty marginal from 2.3 to 2.5. I think the elbow is probably around 2.5A.

I'm going to keep setting these around 1.8, just because I feel more comfortable justifying that current until there's some more data to back up pushing it to 2A.

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Well if it helps i toasted 1 M140 at 1.9A. and even others at 1.85A.

This is 700mA more where talking.


From 1.8A to 2.5A what did the Higher bin one do. In other words difference in power.?

rhd said:

more data to back up pushing it to 2A.

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Take the lead brother. :beer:

lazeerer said:

From 1.8A to 2.5A what did the Higher bin one do. In other words difference in power.?

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1.8A was around 2.3W
2.1A was around 2.5W
2.5A was around 2.7W

Looking at the numbers - even just the 1.8A figure - this wasn't actually an efficient diode after all. I normally bin all my diodes at 1A, and at 1A, this was a higher efficiency diode. Sometimes I get a surprise though once I hit 1.8A, and the more efficient diodes at 1A aren't the most efficient at 1.8A. So that's what it looks like here.

Alright, I'll give a third diode a shot..... I'll choose another one that I believe to be high efficiency. I'll pay attention to what it does at 1.8A before pushing it though.

EDIT:
Ok, quick update and then off to bed.

For the third diode:
1.8A hit 2.5W (so this one is pretty efficient)
2.0A hit 2.6W
2.4A hit 2.7W
2.5A hit 2.6W

So, I don't think these are breaking any power records (although at 2.7W I think this one is tying some?), and I don't see any benefit to actually running them above 2A. But at the very least, these ones weren't harmed by pushing them above 2A, and it appears that near 2.5A is not a guaranteed terminal current.

(and, btw, that was a little frightening)

Judging by those numbers between 2A & 2.4A Looks like the sweet spot.

Ill try some M140 out but not looking forward to it because Ive killed M's at less then 2A before.

Ill post some numbers too.

However if i blow the first 2 iam not going for a third.

lazeerer said:

Judging by those numbers between 2A & 2.4A Looks like the sweet spot.

Ill try some M140 out but not looking forward to it because Ive killed M's at less then 2A before.

Ill post some numbers too.

However if i blow the first 2 iam not going for a third.

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You are gutsier than me sir. I would have stopped at one blown

I love reading up on all your developments but you guys make me queasy with those currents and blown high efficiency diodes...

Alright guys did some testing my self but they dont compare or even come close to RHD's diodes:


All done with a G1 lens Ophir LPM......

First Diode:

1.8A - 2.36W
1.9A - 2.41W
2A - 2.47W
2.1A -2.56W
2.2A -2.61
2.3A Dimming....



Second Diode:

1.8A - 2.01W
1.9A - 2.09W
2A - 1.87W
I Stopped here because this one would have died.


Third Diode:

1.8A - 2.37W
1.9A - 2.45W
2A - 2.49W
2.1A -2.53W
2.2A -2.6W Just under it. 2597mW
2.3A - DEAD at 2256mA


Maybe the H series are different like i have been saying but what i mean by diffrent is binned and only that.. These numbers dont even come close to yours RHD so i have no clue whats up but something is diffrent.

I used 2 efficient diodes and 1 not so efficient but still good efficient at 2W.

So thats what i got. Thoughts.?

Interesting.

What I find most notable is that I'm not really seeing any higher output (on the max power end), but the diodes almost seem to scale differently, and certainly the H-series appears to be able to handle higher currents better.

I'm almost inclined to want to try the high current test with a "low efficiency" H-series diode, and see what would happen at ~2.5. Perhaps what I'm binning as low-efficiency, is really just an IV that is offset further on the X-axiz, and may actually be a more capable diode. Like if you looked at the Mitsubishi 300s vs 500s. At a current of 400mA, the Mitsubishi 300s actually produce higher output than the 500s. If you didn't know what the diodes were, and were testing blindly, thinking them to be similar in spec, you'd think the Mitsubishi 500 was a less efficient diode.

In fact "efficiency" is the wrong word when we may not be comparing Apples and Oranges anyway. Higher potential output is a better comparison.

rhd said:

Interesting.

What I find most notable is that I'm not really seeing any higher output (on the max power end), but the diodes almost seem to scale differently, and certainly the H-series appears to be able to handle higher currents better.

I'm almost inclined to want to try the high current test with a low efficiency H-series diode, and see what would happen at ~2.5. Perhaps what I'm binning as low-efficiency, is really just an IV that is offset further on the X-axiz.

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Dont forget it goes both ways.

I have binned diodes at 1.5A that do 1.75W with a G1 but turn it up to 1.8A and it only does 1.9W.

So If its not Hitting ~2W+ at 1.7A I dont think you will get much more out of it.

This is why i bin mine 2 times.

1) at 1.2A
2) at 1.7A

lazeerer said:

Dont forget it goes both ways.

I have binned diodes at 1.5A that do 1.75W with a G1 but turn it up to 1.8A and it only does 1.9W.

So If its not Hitting ~2W+ at 1.7A I dont think you will get much more out of it.

This is why i bin mine 2 times.

1) at 1.2A
2) at 1.7A

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Ya, you hit that one dead-on. Here are the results of testing two low-binned diodes (I mean, it's almost comical to be calling these "low-binned", but they're the two worst I had from the H-series). The tests were using G1 lenses. The bracketed comment about how they initially tested relates to the binning I did, whenever I did it (weeks ago), and is a RAW optical figure. So don't compare those initial values to the test figures below them. What's really interesting is how these actually show remarkable output at 1.3A.


Low Efficiency Diode #1 (initially tested 1256mW RAW @ 1A)

1.3 - 1715 mW
1.5 - 1960 mW
1.8 - 2250 mW
1.9 - 2260 mW
2.0 - 2170 mW
2.1 - 2080 mW
Stopped - clearly dimming


Low Efficiency Diode #2 (initially tested 1310mW RAW @ 1A)

1.3 1700
1.5 1920
1.8 2120
2.0 2190
2.1 2130
2.2 2070
Stopped - clearly dimming

rhd said:

Ya, you hit that one dead-on. Here are the results of testing two low-binned diodes (I mean, it's almost comical to be calling these "low-binned", but they're the two worst I had from the H-series). The tests were using G1 lenses. The bracketed comment about how they initially tested relates to the binning I did, whenever I did it (weeks ago), and is a RAW optical figure. So don't compare those initial values to the test figures below them. What's really interesting is how these actually show remarkable output at 1.3A.


Low Efficiency Diode #1 (initially tested 1256mW RAW @ 1A)

1.3 - 1715 mW
1.5 - 1960 mW
1.8 - 2250 mW
1.9 - 2260 mW
2.0 - 2170 mW
2.1 - 2080 mW
Stopped - clearly dimming


Low Efficiency Diode #2 (initially tested 1310mW RAW @ 1A)

1.3 1700
1.5 1920
1.8 2120
2.0 2190
2.1 2130
2.2 2070
Stopped - clearly dimming

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This is pretty much how an efficient A140 would have looked.

So could it be that we went from A140 to the Great M140 to the super Great H series.?

Thats only 1 projector. If more testing is done, Maybe we can see 3W+ out of an H series as a Freak then more in the 2.6W+ for efficient diode and average diodes would be in the 2.2W range.?

There is to many question not enough testing to call anything for sure on the H Series but iam still going with my gut that they are higher binned diodes or better improved 445nm diode.

I agree that more testing is needed. I would be interested to know what the findings were from that other guy who had one... I think it was a 1600, which was the same as mine (1650) but without some stupid USB dongle thingy.

The only observation I'm comfortable drawing, is that the lower-powered diodes from the H series are ALWAYS the higher wavelength diodes, and vice versa. This fact has been consistent across each of the 32 diodes tested. It's a relationship that has never broken down.

rhd said:

I agree that more testing is needed. I would be interested to know what the findings were from that other guy who had one... I think it was a 1600, which was the same as mine (1650) but without some stupid USB dongle thingy.

The only observation I'm comfortable drawing, is that the lower-powered diodes from the H series are ALWAYS the higher wavelength diodes, and vice versa. This fact has been consistent across each of the 32 diodes tested. It's a relationship that has never broken down.

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Yes that would have been awesome and would have helped us now.

I guess for now only time will tell. Keep an eye out for good deals on the H Series projectors and we can go from there.?

Hopefully like everything else prices will go down on it.

The Higher WL also interests me quit a bit too because even though its not as much power its brightness equals it out. You dont loose either way in my book with such a diode.