8x BR DIODES
 

All 8x Owners

Last Update:2010-07-24
Previous Update:2010-05-04

NOTE: To facilitate the readers, the last updated text will be written in red color.

Having seen an exponential increase of data, researches, and even more Forum members owning different brand and types of these diodes, my attempt is to collect all data (actually spread on different topics) in a single topic site.
I have immediately added the following threads as I have foreseen the possibility to introduce and update the three basic efficiency plots for each different type of diode, also for some future one, still unknown, and just to give everybody a simple research at the beginning of this topic.

The (simple) formulas and the data required to trace the three "efficiency" plots are the following:

Eff% = Po/Pi x 100
Pi = Ii x Vi where:

Po = Power Output (mW)
Pi = Power Input (mW)
Ii = Current Input (mA)
Vi = Voltage Input (V)

Hereunder I insert the datasheet of all the 8x owners (actually located in the "Tutorial, Help & Repairs" thread, which will be no more updated): it will be updated here.

http://farm5.static.flickr.com/4118/...4d594ae1_b.jpg

http://farm5.static.flickr.com/4101/...bfc705a2_b.jpg

The "Kendall Mistery" Curve has been upgraded according to the factor suggested by Dave, according to his 405-G-1 reading.
The Dave plot has been updated according to my answ. #15.

BDR-203 Plots
 

Last Update: 2009-09-10
Previous Update: 2009-08-17

Herewith are added the three main efficiency plots for the BDR-203 diodes, and these plots will be updated according to the members that will show or PM me all the data needed to plot these graphs.

http://farm3.static.flickr.com/2732/...a5d3bd7c_o.png

http://farm3.static.flickr.com/2520/...df566e5a_o.png

http://farm3.static.flickr.com/2575/...d4dc020e_o.png

Graphs realized according to info reported in answer #15.

BDR-S03 Plots
 

Last Update: 2009-08-16
Previous Update: --

Herewith are added the three main efficiency plots for the BDR-S03 diodes, and these plots will be updated according to the members that will show or PM me all the data needed to plot these graphs.

http://farm3.static.flickr.com/2464/...27d1f6a3_o.png

http://farm3.static.flickr.com/2744/...c60a31f3_o.png

http://farm3.static.flickr.com/2663/...23ee849b_o.png

These are the first data recorded by Daguin, and the Po has been increased according to his suggestion, relevant to the single reading with the 405-G-1 lens.

SW-5584 Plots
 

Last Update: 2009-08-16
Previous Update: --

Herewith are added the three main efficiency plots for the Pan #SW-5584 diodes, and these plots will be updated according to the members that will show or PM me all the data needed to plot these graphs.

http://farm3.static.flickr.com/2668/...68f828bf_b.jpg

BWU-300S Plots
 

Last Update: 2009-08-16
Previous Update: --

Herewith are added the three main efficiency plots for the BWU-300S diodes, and these plots will be updated according to the members that will show or PM me all the data needed to plot these graphs.

For the moment, no efficiency plots are available.

Other Diodes Plots
 

Last Update: 2009-08-16
Previous Update: --

Herewith will be added the three main efficiency plots for all the 8x diodes that will be introduced in the worldwide market, or still unknown; these plots will be updated according to the members that will show or PM me all the data needed to plot these graphs.

For the moment, no efficiency plots are available.

Re: 8x BR DIODES
 

wow VERY NICE!!! i learned a lot...

Re: 8x BR DIODES
 

Outstanding Graphs FrancoRob! These graphs, along with an updated database here on this thread will help us learn more than ever about diodes when we compare them! Time to print these off and work on a function for each diode!

:eg:

+1 rep!

Tyler

Re: 8x BR DIODES
 

Meatball:

Thank you for your appreciation, I'm glad to be helpful.:thanks:

Re: 8x BR DIODES
 

kudos to you franco... I now have Faith to ware I'm putting my diode when I get it.

:)

Re: 8x BR DIODES
 

I've been trying to find the data sheet, but going off of memory didn't Dave acheive the 512mW at a higher current setting than posted in the table above. I remember he acheived that 512mW setting then turned down the current.

I'm still trying to find the original thread.

Re: 8x BR DIODES
 

You can find Dave datasheet in the first thread of: Reviews - Possible 8X Sled from HighTechDealz

Take care that he has done the test with an Aixiz acrylic lens. Then, in his answer #8, he wrote:

"You can easily convert this data without re-doing the full test if you only want to know a certain output at a certain current. Simply calculate the percentage increase between 325 and 430. Then you can use that percentage of increase to apply it to any other output in the graph to see what it would be with the G-1 lens."

This is exactly what I have done.:yh:

Re: 8x BR DIODES
 

Re: 8x BR DIODES
 

so I think its safe to say that it was based on a % projection, but I remember still
a pic that showed the 512mW... I am of course getting older and there is a lot of info
on this. Thanks Heath for the link I re-read most of it already.:) that was a great thread.

Re: 8x BR DIODES
 

iskor12 and jander6442:

both of you are remembering the first test that Dave has carried out on the first BDR-203 (now you have to be careful about the type of diode we are speaking of:D), while his actual efficiency curve data are relevant to a BDR-S03, also called "Kendall mistery".

Anyway your notes have been helpful, as I have carefully read again all that thread: in the answer #41 Dave has given some mA/mW data, obtained with an Aixiz acrylic lens with the back opened.
In the answer #116 Dave has given some voltage relevant to different mA values.
In the answer #122 he declared 365mA , 400mW (acrylic lens), 512mW (405-G-1 lens).

Thanks to all these data, now I think to be able to plot the three efficiency graphs relevant to the BDR-203, also if I have to multiply the Po data of answer #41 per 1,28 (512 / 400 mW); I'll be also able to update the 8x BR Owners general graph.

Re: 8x BR DIODES
 

found it ...yep...365mA at 400mW with acrylic 512mW after jay's bada$$ lens.



sorry franco for the confusion and yes I was refering to Dave's first BDR-203 testing.:)
I'm good now, maybe a nickname for the BDR-S203 would help

Re: 8x BR DIODES
 

for referance sorry for double post

http://i249.photobucket.com/albums/g...XHalfaWatt.jpg

Re: 8x BR DIODES
 

I knew what you where talking about!! :) Hey...I have some vendor info for you on these new diodes.:) I will PM you.

Re: 8x BR DIODES
 

Well it looks like Kendall is out of sleds...

I'll have to wait awhile before I order mine I suppose. Did he say that he planned on keeping them in stock on a regular basis?

Re: 8x BR DIODES
 

FrancoRob,
Great compelation of current information. Subscribed! I know I'll be refering to this thread in the future. +rep!

Re: 8x BR DIODES
 

I like the effort and comparisons, but you've done a little bit of re-inventing the wheel as far as comparing laser diodes to each other, and made more work for yourself.

Really, to compare them, you just need a few numbers: threshold current and slope efficiency being the main ones, with threshold voltage as well.

Re: 8x BR DIODES
 

You are surely right, but the point is that, when I started with the first plots, the members were showing different data each other, so I had to "arrange" a simple I/Po graph with the annexed list of the owners lasers technical data.
As you can see, the "General" graph is difficult to read due to too much points/curves, its use was just to show the average output of the various diodes used by the members.
Few days ago a member asked me to "improve" my job, adding the Eff. curve, and another member asked me to add also the Pi/Po curve: I have simply done what they asked me, and I have foreseen different threads just to add into each of them more plots of other diodes, but of the same type.

If all the members, which will like to have their diodes efficiency plotted in this new form, will supply me of the needed data, probably I'll be able to delete the "General" graph (the Members List will be maintained) as the new are more precise and complete, and maybe I'll be able to modify/improve also these new graphs, according to the suggestions of guys more expert in electronic comparisons rather me. Sorry for the reinvention of the wheel, surely you would have been able to do a better work.

Re: 8x BR DIODES
 

iskor12 and jander6442:

Now you can see also the Eff. plots relevant to the first Dave BDR-203 testing....:yh:

Re: 8x BR DIODES
 

I have two 8x sleds for sale :)

And i JUST finished my NEW KEYCHAIN 8X BUILD!!!

Jay's CR2 Keychain kit, with a 405-G1 lens, and a BDR-S03 diode!!!

Set at 305mA, it is outputting 428mW!!!

I do believe, this IS the SMALLEST, most POWERFUL 8x build in the WORLD!!!

I'm gunna take some pics! FrancoRob, would you like to add this information to the graph as well? I know im already on there, but this is a different diode, in a WAY smaller host, at a different current.

I just think it's cool that i finaly built a build NO ONE ELSE has ever built before ^_^

Thanks, Pics are comin!!! I'm gunna start a new thread about it in the B/S/T section, as it is for sale everyone!!!

Tyler - Dark Lasers

Re: 8x BR DIODES
 

Schweet! :D

Watch those duty cycles!

Would you mind taking a few voltage measurements for us my good man?

Tyler