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Old 02-22-2015, 02:40 PM #1
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Default [METERED 471]Light blue ni$h@ diode pushed hard at 2.6A. Pictures.

Disclaimer: I understand the risks of pushing this diode. I'm sure the diode deteriorates very rapidly at this current. I accept that and will enjoy it for as long as it lasts.


Ok, starting out, I've been reviewing the threads and watching the price of the NDB7675 diode and it has come down quite a bit in price. Awhile back Sinner had a host for sale the Cypreus IIIB Al/Cu with a 20 A switch, this would be ideal for a large driver with high current demands.

Parts
SXB V8 26mm driver.
KeepPower 26650 battery
Sinner host
1/4" Aluminum plate
G2 lens
22 awg silicon wiring and a copper strip provided by lazeerer.



Now, intionally I had some trouble setting the driver. Being relativity new to POT adjustable drivers I had questions. I sent a few PMs to lazeerer and grainde to which they responded with some great suggestions. Starting out my bench power supply 30v/3A could not power the driver on my test load. Also I wasn't sure about the two ranges on the driver but with some questions answered I set the driver to 2.6A in range 2.
I used 3 diodes on my test load and when measuring current draw at the tail cap it draws a whopping 6.31A!
Power: 2030mW.

Because this driver is a Boost I only needed one lithium ion cell. It's a good thing the host was designed for the 26650 because space was going to be an issue and the demand on the battery was going to be great.
Here is how I placed and heat sinked the driver. Thermal paste holds the driver in place and the copper strip lazeerer provided squeezes the pill in the host body very tightly and provides a solid connection.




The pill was inserted tightly into the host body to take the place designated for a second 26650 battery then the head was threaded on and the diode module set.
I was a bit nervous at this point my friends, everything seemed soild but you don't really know until you flick that switch the first time...
SUCCESS! It lit right up with no issues.
Brilliant blue color
I plan to ship it off to get spectro'd and I will post results here. However before I can attend to that I fly out Monday for spring break.
Here are a few beam shots & photos!
Thank you everyone who helped and provided parts. Great support here on LPF.






That awesome host!




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Old 02-23-2015, 01:07 AM #2
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

Beautiful!
I'll bet it's got a great duty-cycle.

I think everyone that has build a laser has that "moment", when they press the button to turned it on for the first time!

I'll look forward to hearing the results of the spectro test. REP+
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Old 02-23-2015, 02:08 AM #3
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

YES...Yes indeed !!! That is a beautiful build !!! A Sinner host is a work of art by itself !!

The 462nm line is to my eye the best blue color I have seen !!!! Just a perfect blue !!!!

Now....you have combined both these beauties into one great unit !!!

OK....It will not last 5000 hours !!! Soooo....maybe 500 hours !!! Just a guess !!!

Hmmm.....Beam-on time....say 15 minutes per day.....so........at 500 hours MTTF....you will have only....errrrr......aahhhhh.....2000 days of beam viewing at 15 min per session.....which then translates into only 5.47 years !!!

Stretch it out to 3 times a week.....perhaps it will keep pumping out blue photons for ....mmmm 15 years !!! !!! hahaha !!!

You will just have to suffer with that !!!!!

The beam shot looks like a solid blue neon rod !!

I have a CU Cyprus host which needs a LD....and I think a 462 is a perfect choice !!!

Thanx for sharing !!!
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Old 02-23-2015, 02:20 AM #4
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

Love it! 6.31A, SHIIITT!!! If I were you I would copper braid the springs with thick silicone wire to prevent a meltdown.

At that current, pretty much every spring is going to have a significant amount of resistance and that's a great way of producing unnecessary heat

Awesome job!

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Old 02-23-2015, 08:09 AM #5
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

This definitely deserves a +3 for the inventive pill setup! Fantastic build and amazing colour, chapeau!

Edit: Will send rep this evening, currently on my mobile with the new site and have no idea where the rep button has gone...

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Old 02-23-2015, 11:02 AM #6
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

Love it "Down". I have a hard time calling 450 and under blue now without saying "with a touch of purple/violet". Feel like I should be calling my M462 464nm as thats what DTR shows they really are unless his was being overdriven.
Nice to see usage of copper strip. Use to use it all the time when I was building 532nm modules units. You could use it to augment that spring if you think you need it. Let me know if I need to send you a piece.

I remember you buying that Sinner host I believe right before I bought the smaller all copper with chrome plating which I stuck my 1.5W 520nm in. I had a terrible time trying to decide which of the 3 I wanted that he put up at a discount Christmas time. Still haven't taken pics of it yet or a couple other units now that I think about it.
Congrat and enjoy that beauty +Rep .... have to spread some first
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Old 02-23-2015, 03:29 PM #7
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

Hey thanks everyone. Adding some bare copper wire to the V+in spring is a great suggestion. I should have built it that way when I first soldered the contact spring.
@ mattronium, thanks, when I put it on the LPM it was very stable. I imagine it dissipates heat pretty well. It's pretty solid host that's for sure.

@CDbeam777 great out look on its life expectancy. I never run my lasers long at all and They all have short duty cycles. Hey when is that Cyan cannon gonna make its debut?

@ grainde. I've been using that scrap Al plate on a lot of builds. Can't say the driver isn't heat sinked well. Also another reason for this pill is it simply slips right out. If I want to reuse the host down the road I can because it hasn't been modified for this build.

@ Pman I agree what we used to consider "blue" is no longer blue it's more or less violet. Except for indoors, hmm the 445 still looks blue to me. Anyone else notice that?

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Old 02-24-2015, 12:18 AM #8
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

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Originally Posted by Down with Umbrella View Post

@CDbeam777 great out look on its life expectancy. I never run my lasers long at all and They all have short duty cycles. Hey when is that Cyan cannon gonna make its debut?
The Cyan Cannon is waiting for two things....a warmer garage work room....and a 700mW 520....need heat from the Sun for the first and more $$ saved for the LD for the second !!

I have another " Combiner " in the works also...soon to be revealed...soon !! Hint..." Tyrian Terror ".....SOooo many builds....so little time
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Old 02-24-2015, 03:18 AM #9
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

Awesome build. That host looks amazing.
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Old 02-25-2015, 01:38 AM #10
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Default

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Originally Posted by CDBEAM777 View Post
The Cyan Cannon is waiting for two things....a warmer garage work room....and a 700mW 520....need heat from the Sun for the first and more $$ saved for the LD for the second !!

I have another " Combiner " in the works also...soon to be revealed...soon !! Hint..." Tyrian Terror ".....SOooo many builds....so little time
I can't blame you for not wanting to work in a cold garage. The space heater in the basement brings it up to maybe 60 for me.
Something about your hint leads me to believe the build will be small. I'll keep an eye out
Thanks DTR for the diode!

Last edited by Down with Umbrella; 02-25-2015 at 01:39 AM.
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Old 02-26-2015, 02:18 AM #11
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Default Re: Light blue 462 diode pushed hard at 2.6A. Pictures.

Quote:
Originally Posted by Down with Umbrella View Post
I can't blame you for not wanting to work in a cold garage. The space heater in the basement brings it up to maybe 60 for me.
Something about your hint leads me to believe the build will be small. I'll keep an eye out
Thanks DTR for the diode!
Small....well....no...5.3 lbs ( 2.4 KG ) solid Copper heat sink....combined with Brass, and Acrylic. Add temp and Lipo VDC monitoring. Typical for one of my builds where function trumps form !!! Doing the set-up now. Gotta make sure the concept works...Yea, I know.....one could use it to crack nuts !!

I would have used "Krell Metal"...but could not find any....haha see pic !!
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[METERED 471]Light blue ni$h@ diode pushed hard at 2.6A. Pictures.-blaster-shoots-krell-metal.png  
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Sky Blue Ramjet-Corrected NUBMO7E- Completed http://laserpointerforums.com/f42/sk...ild-94646.html
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Last edited by CDBEAM777; 02-26-2015 at 02:35 AM. Reason: Added pic
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Old 04-03-2015, 07:43 PM #12
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Default Re: [METERED 471]Light blue ni$h@ diode pushed hard at 2.6A. Pictures.

Hey guys here's an update, I got it metered by Cyparagon and here are the results: 471nm. I am very happy with this. It's a great wavelength.
Thanks Cyparagon
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Last edited by Down with Umbrella; 04-03-2015 at 07:45 PM.
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