[PSUBS-MAILIST] LED recommendations

[Cliff Redus via Personal_Submersibles]

Emile's email got me back on the Psubs 10K LED light project which has been
on hold waiting for a driver.  This LED driver is perfect for driving the
10K lumen Bridgelux LED array we spected.  It will work for 12V, 24V and
36V system.  Also because it is so small it enabled me to reduce the size
of the 1-atm enclosure to 3" diameter x 2.85" long.  In the spirt of KISS a
custom PCB has been abandoned as well as the provisions for dimming. The
driver has provisions for dimming but for this installation, it is not
implemented. With not having a custom PCB we loose the polarity and
overcurrent protection but the driver has built in overtemperature
proection.  I have updated the drawings for the light and Jon has uploaded
them to the PSUBS.org site.  See http://www.psubs.org/design/  and click on
Lights to download PDF drawings including a wiring diagram.  I completed an
FEA analysis and the enclosure should be good for 1000m.  At this point we
need to build one of the lights as a prototype and test.  I have a test
chamber I can use to test the light.  I am thinking about fabricating one
of the lights for the bow of my boat but I have to figure out where to
mount it and how to get power to it.

This is a draft set of drawings.  Comments/suggestions welcome.

Regards

Cliff

On Mon, Aug 28, 2017 at 3:07 AM, emile via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Jon,
>
> The Pilotfish team and me  developed a UW LED lamp. Since the Norway
> expedition on my sub. So happy with it that I like to recommend it.
> It is a Bridgelux Vero 29 unit with 80 Watt (abt. 300 watt Halogen) Wide
> (90-100 deg) angle but that is okay for a sub. Housing is can go down to
> 800 M and has a 80 mm OD.
> Dimmable, I don’t run it at full power.
> LED driver 6-40 VDC : https://pcb-components.de/led-
> aufwaertswandler-boost-step-up/led-senser-xtreme-200-
> 2050ma-6v-30v-detail.html
>
>
> Br, Emile
>
> -----Oorspronkelijk bericht-----
> Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
> Namens Jon Wallace via Personal_Submersibles
> Verzonden: maandag 28 augustus 2017 4:29
> Aan: Personal Submersibles General Discussion
> Onderwerp: [PSUBS-MAILIST] LED recommendations
>
>
> While we're in the middle of an LED investigation, can those of you
> actively diving with LED lighting give us a guideline on a range of lumens
> we should be striving for (per lamp), how many lamps, spot or flood?
>
> I know Alec was using an oil-filled 3000 lumen lamp on SNOOPY before
> selling it.  I've been looking at PRIMELUX 8100 lumen lamp that seems like
> it could be easily adapted for oil or air compensation.  Generally I would
> say more light is better but also need to be careful about power
> consumption so I don't want to purchase more light than is necessary for
> general operations.
>
> Jon
>
>
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