Handheld 500W LED Power .... finally finished (Beamshots added)

[Bimmerboy]

A piece of paper being burned by the MC-E's intensive light output.

That's insane! I easily feel the heat of my high power LED lights on my hand, but burning paper? Crazy!

Another of the many impressive things about Mr. Beambastic is the size. The pictures are deceiving, and at first you think it's huge... until you notice it next to the coffee mug. And, that 110mm aspheric is less than 4 1/2 inches across.

Truly amazing light, Holzleim! Definitely ranks among the best builds ever displayed here.

[deusexaethera]

By the way, you mentioned "burning"......
A piece of paper being burned by the MC-E's intensive light output. Note that it is pure visible light that burns the paper. The LEDs do not emit any infrared light like an incan or HID.

Oh yes they do. If I hold my P3D to my upper lip and cycle through the modes, I can feel the radiant infrared heating my skin the instant I turn it on -- long before the body of the flashlight starts to warm up.

(EDIT: It also happens with my Arc6, so it's not just a Cree behavior.)

[Holzleim]

I think it is not the infrared radiation you feel when putting your finger in front of the LED. The amount of IR a white LED emits is negligible in relation to the energy emitted in the visible spectrum. What you feel as heat radiation is the visible light that is absorbed by your finger (or the black paper in my case) and so is converted to heat.
Spectrum of the MC-E with IR range at the right:

[Edwood]

Simply love the toggle switch design, multiple uses.

Simply crazy awesome.

-Ed

[koala]

German engineering at it's best.

[Holzleim]

Now finished external charger for my creation:

- 2A - 16A adjustable charging current
- Atmel Mega8 microcontroller
- Synchronous dc/dc converter circuitry for main current (2-16A) through both LiPoly cells in series
- Dedicated 0,5A charging circuitry for each LiPoly cell; used for balancing of the cells
- Input voltage 10V - 16V; either 12V car supply or 15V/150W laptop power-supply
- efficiency ~95%
- can be used for charging and for continuous mains or car operation

[Nos]

boah geil. meine fresse das ding würd ich gern mal live sehen

[Illum]

SMT components on a thru-hole board? thats impressive!
that is 30-35 gauge wire yes?

[Holzleim]

I know it's not nice, but it can handle 150W without any sweating....
Making a PCB for only one piece wouldn't been worth the cost and labor for layout. There are 20-30 parts in total within the circuitry and all not that small.

The brown wire has no electrical function, it is for heat distribution from the top MOSFET.

The wire towards the lamp (~2,5m long) is 2 x 4mm2 to minimize voltage drop so that the charger ICs can accurately regulate target voltage.

[London Lad]

I love it (the light and the charger) but you are definitely nuts as a fruit cake

[1 what]

Hi I've just re-visited this post after a couple of weeks away. Re #10: What do you mean...why isn't this an EDC.

[Holzleim]

When saying it is not an EDC I mean that it is too heavy and tall to have it permanent with you (on a neck chain or lanyard), I use this light selective when I need it a portable sun. I not often put it in my backpack without any concrete intention for usage, just for having it with me "for the case...".

[NosHusky]

http://digg.com/d1qpdn

Your accomplishment has been dugg.

Well done !!

[Holzleim]

What's the meaning of the word "dugg"? I can't find any translation for it.
The link you posted leads to the first page of my thread. Is this ok or does my browser something wrong here; what should it link to?

[Vinniec5]

All you need now is a large spinning mirror and a tracking system and you'd have yourself a nice ABM system there. you never know when the Empire may finish another Death-Star, with that Night-Sun you're all set.

Seriously, though very nice job and excellent build

[Kestrel]

I love it (the light and the charger) but you are definitely nuts as a fruit cake

+1. I love it!!

[...] a portable sun

It's great that LED's are getting a toe-hold in the 'Big Lights' thread.

[Illum]

What's the meaning of the word "dugg"? I can't find any translation for it.
The link you posted leads to the first page of my thread. Is this ok or does my browser something wrong here; what should it link to?

digg is a seperate "blog" on another site, dugg is just a fictional past tense of digg. What happened here is that your grand invention was posted as a blog/message board. "Digg" is yet another silly fictional term we Americans use to describe support

When it linked back to here means the site he created mirrors the link from this forum over to that, it allows users not of this forum to find it easily

[mrQQ]

deleted

[Ra]

And now for a big

I've been away for a while, but started browsing at CPF again today...

Then I found this !!! Where have I been the last year!!


Absolutely awesome stuff, Holzleim !! I can't say enough that this is what it's all about at CPF !!
And it sure put's LED's on a par with the big light's. I love the name too.
I noticed you are quite familiar with electronic's.. That is a big advantage with projects like these. Maybe you can help me with some electronics for future projects..?? ..Maybe..

Keep up the good work !!

All the best,

Ra.

[CampingLED]

Great to see you back Ra, I was browsing some of your old threads just the other day.

Holzleim, some great new LEDs on the market lately. When can we expect the upgrade?

[jason 77]

Man that is some serious soldering! LOL


Holzleim, can I ask where you got the fresnel lens from?

[Holzleim]

----- R.I.P - 30.04.2010 -----
Only the good die young...........












One single cell defect can blast that much money and effort......
Died while loading with 200mA........
Some weeks before a first hint for the the cell defect was a slightly increased self-discharge for this cell......
Sad but true........

[Illum]

by the way the optics looked, the temperature in there must've hit reflow temp many times over, which means more than likely nothing except metal is salvageable.

One Li-Po did go off, that much was certain... as for the other Li-Po packs, which probably sustained the temperature high and long enough to trigger a cascade failure.

Holzleim, are you alright? did this happen your your house?

[russthetoolman]

OMG, that is so sad!!! You put in so much money and effort.
I am truly sorry for your lose
I do hope all humans, pets and property are OK!!
You replied to my PM and I was confused until I looked at your thread.
So sorry
Russ

[ma_sha1]

OMFG, WTF? did it caught on fire due to a bad battery?

[tino_ale]

Wow that really really suck. That's why I've stopped using lipo, they are just too darn sentitive.

I stick with nanophosphate A123 system cells for any high power application, eventhough the energy density is not has high.

[DM51]

That is a total tragedy... I'm extremely sad to see it. That light was an amazing achievement, and it is a dreadful shame this has happened...

[aurum]

[spencer]

Very unfortunate. Perhaps a bigger and better rebuild?

EDIT: And it died only 1 day before this thread was bumped.

[Kestrel]

My first thought upon seeing today's pics was Aaaiiieee!
I'm so sorry to see this. My condolences.