XHP-35

[texas_shooter]

Missing out on some ideas here. For the High Intensity version, that emitter is 2.4mm square. That’ll fit under 26.5mm TIR’s from Carclo, its input hole is 3.8mm. This next area I’m not sure about. But the input side from the Carclo 10511 family is 1.7mm so not certain what will happen to light from the outer area not under the hole. What I’m thinking as a good light build is a two cell light with a driver to bump up the voltage and yet fit into the P60 or C8 family of lights.

[DB_Custom (Dale)]

An EE X6 w/extension tube and 35mm Ledil Cute-4 optics. Quad XHP-35, that should garner some attention!

[DavidEF]

@DB Custom

An EE X6 w/extension tube and 35mm Ledil Cute-4 optics. Quad XHP-35, that should garner some attention!

Okay, so how much ya sellin’ those for, Dale?

[pilotdog68]

Dale did you make your extension tube yourself? I think I would like the X6 proportions much better if the tube was longer

[DB_Custom (Dale)]

I have one with a Ledil Mirella and a single XHP-70 that does some 5500 lumens. The extension tube went to a Solarforce M7, took a little modification but it all works well together.

So yeah, what I was thinking, an extension tube would allow for what, 4 18350’s? Maybe 3 18500’s? (Although I have yet to find an 18500 that will put out like the shorter 18350 Purple) Then it’s just a matter of determining the driver, right? I’ve tried 12V triple XHP-70’s on 3 18650’s and they can’t do the forward voltage. But 4 parallel XHP-35’s with 4 18350’s, run through a Zener modified FET driver, that could be interesting…. the problem as I see it is that 1A max current thing, wonder what they can REALLY take?

Would this maybe do 8000 lumens? Don’t know, but if I can remember all this I’ll probably give it a go.

Edit: Have some of the HI XHP-35 on the way, y’all don’t let me forget why I ordered these ok?

Edit II: Ok, so these fit the XP footprint which means a triple would be easy to do in the X6 with a Noctigon 32mm mcpcb. I have copper heat sinks for this, and the Ledil Cute-3 optics, so all I need is for the emitters to come in and we’ll see what these puppies can do! (backorder on the XHP35 HI til Aug 5, they’ll probably ship a day or two quicker, we’ll see.)

Edit III: Looks like, from some extrapolation of the data sheets, we should expect something in the 4400 lumen area with a Vf around 12.6. Not stupendously outstanding but not at all shabby either.

[DavidEF]

@DavidEF

@DB Custom

An EE X6 w/extension tube and 35mm Ledil Cute-4 optics. Quad XHP-35, that should garner some attention!

Okay, so how much ya sellin’ those for, Dale?

I changed my mind. I’d never be able to EDC that.

[Manual_Man]

Available at Cutter already apparently, if the price is any indicator they should eventually be available for about $5 each as well:
http://www.cutter.com.au/proddetail.php?prod=cut2677

[richnpc]

@texas shooter

Another possibility is using set ups that use 4-18650’s to run say 3 XM-L’s in series to now run 3 XHP-35’s in parallel. Now we’d get less current through switches, springs and wires but have better wattage. Tiny Monsters from Nitecore and G, S, M series from Eagletac.

Is the old DRY 3 XMLS in series? I wonder how that might work out.

[texas_shooter]

@richnpc

@texas shooter

Another possibility is using set ups that use 4-18650’s to run say 3 XM-L’s in series to now run 3 XHP-35’s in parallel. Now we’d get less current through switches, springs and wires but have better wattage. Tiny Monsters from Nitecore and G, S, M series from Eagletac.

Is the old DRY 3 XMLS in series? I wonder how that might work out.

The original DRY triples were series on a supposed 4 amps driver. Should be a fairly straight forward modification.

[Old-Lumens]

@DavidEF

@Old-Lumens

I would think it's going to take 4 cells, like in an SRK, but 4 in series, to get the voltage. Once this goes up over 1.5 amps, then you will be talking more like 13-14 volts, so I would think 4 cells and a buck driver would be better off than a boost driver. Buck is usually more efficient than boost and takes less amperage from the cells. Or at least 3 in series and a boost driver.

I could see SRK lights with four of these leds in parallel and four cells in series, or a Courui with a boost driver and 3 cells in series.

Yeah, but why would you want all that power going to a XHP-35, when you could easily power up at least a XHP-50 with that, and with high-drain cells, a XHP-70?

Because possibly 3500-4000 lumens with no deadly black X of death from a four die led? Possibly, no faceted or OP reflector needed? Possibly 12000 lumens out of a SRK with 3.45 sized die? Not having to mod the reflectors or centering rings? Not worth F------ with? Maybe not, but maybe it will be. Dale will let us know soon enough, LOL. I don't even bother any more till Dale is done with his thing.

[DavidEF]

@Old-Lumens

@DavidEF

@Old-Lumens

I would think it’s going to take 4 cells, like in an SRK, but 4 in series, to get the voltage. Once this goes up over 1.5 amps, then you will be talking more like 13-14 volts, so I would think 4 cells and a buck driver would be better off than a boost driver. Buck is usually more efficient than boost and takes less amperage from the cells. Or at least 3 in series and a boost driver.

I could see SRK lights with four of these leds in parallel and four cells in series, or a Courui with a boost driver and 3 cells in series.

Yeah, but why would you want all that power going to a XHP-35, when you could easily power up at least a XHP-50 with that, and with high-drain cells, a XHP-70?

Because possibly 3500-4000 lumens with no deadly black X of death from a four die led? Possibly, no faceted or OP reflector needed? Possibly 12000 lumens out of a SRK with 3.45 sized die? Not having to mod the reflectors or centering rings? Not worth F——— with? Maybe not, but maybe it will be. Dale will let us know soon enough, LOL. I don’t even bother any more till Dale is done with his thing.

Well… ya got a point there! :bigsmile:

[texas_shooter]

@Manual Man

I noticed the die lines running through it. I don’t think they will be visible when its running. I guess time will tell.

It should be simple enough to run one of these off a single Li-ion while still maintaining about 90% driver efficiency, in fact I think because of the nature of boost circuits it should be possible to maintain a higher average efficiency then AMC7135 drivers from 0.05A through to 2A (if Vf is not too high).

I’m thinking something like this:
http://www.ti.com/lit/ds/slvscm8a/slvscm8a.pdf

After reading the specs on this chip it look doable. Do we have any electrical engineers out there that could design a 17mm board for this. A single cell XHP35 running 1800 lumens in a P60 dropin would give throw much closer to the XM-L led as apposed to the MT-G2 and still be more efficient than either. This would also be the same for any single cell light, keeping them still in the EDC realm. I mod a lot of lights but I tend to destroy many in the process. It’s too complex for my skills. Anyone want to take up the challenge as I believe this type of driver would also give practicability too 9v MT-G2’s, 12v XHP-50’s and 70’s. I believe high drain 18650’s and 26650’s could carry the loads.

[Manual_Man]

As I understand it you wouldn’t even need high drain 18650s. Assuming 80% efficiency your looking at around 4-5A at the battery end.
I’m going to have a go at it. My step fathers an electronics engineer which helps a little but I’m still a little over my depth so time to learn a thing or two. I have a CNC router which I can prototype on.

[DB_Custom (Dale)]

I just received 4 of the XHP-35’s in my grubby little paws. They look awesome! Exactly like the XP-L HI but with a larger phosphor fooprint on the substrate. (Exactly used in loose terminology at first naked eye appearance)

I’ll get a couple of macro images and see how they look.

[M4D_M4X]

i got the LD-2 and noctigon today…

now i have to play and decide if I hook it up with the seanna or a 100mm Aspheric

[mmoro]

where did you bought them? price?

[DB_Custom (Dale)]

Mouser just got some in. Don’t know if Mouser Spain has em or not. My invoice doesn’t show price, not sure I want to look and be reminded…

[ToyKeeper]

Boost drivers. We need boost drivers to run these from a single cell. Or even better, high-amp boost drivers to run several of these in parallel from a few cells in parallel.

Who is still active who knows how to design circuits?

[Manual_Man]

@ToyKeeper

Boost drivers. We need boost drivers to run these from a single cell. Or even better, high-amp boost drivers to run several of these in parallel from a few cells in parallel.

Who is still active who knows how to design circuits?

On it. See here:

Single cell drivers for higher voltage LED's

First the disclaimer. I posted most of this at the entry #33 from this post XHP-35 But thought it might be needed it’s own thread. After reading the specs on this chip it look doable. Do we have any electrical engineers out there that could design a 17mm board for this. A single cell XHP35 running 1800 lumens in a P60 dropin would give throw much closer to the XM-L led as apposed to the MT-G2 and still be more efficient than either. This would also be the same for any single cell light, keepi…

I will be copying a Ti reference desgin with a couple of slight modifications. Creating a single mode driver with over 90% efficency using the chip I pointed out (in the original post Tex linked to) up to 30W boost off a single Li-ion with output up to ~13V seems very simple… I haven’t actually built anything yet (still waiting on parts) but implementing the modes and squeezing it onto a 17m board is going to be the hard bit. I’ll post up a couple of schematics for the electrical engineers out there to review before I start prototyping.

[ToyKeeper]

If it has a microcontroller and a PWM-capable switching chip like the usual FET or 7135, the modes and such should be easy. If it doesn’t have those though, it’ll probably end up being very limited.