[PSUBS-MAILIST] LED Lights

Fri Jun 19 21:09:18 EDT 2015

Hi Alan,
On the DW lights, Phil uses a flexable lense so it compresses as necessary
if any there was any air in the alum housing. I am doing the same thing and
the cables are a subconn design so no compensation is necessary for them.

Best Regards,
David Colombo

804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com

On Fri, Jun 19, 2015 at 3:02 PM, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Ken,
> I am keen on the idea & have ordered a number of cheap led lights, torches
> &
> outdoor lights in past years, with view to making something up.
> Have had a surprizing number of failures with cheap led dive lights &
> torches,
> so something built of good components that is reliable would be great.
> I have posted this before, but there are a huge amount of lamps,
> reflectors, leds,
> lenses & o-rings on Deal Extreme. You have to hunt through the spares
> section.
> http://www.dx.com/c/lights-lighting-1399
> I have been looking at bare alluminium housings that I can hard anodize.
> Maybe
> just cut an o-ring grove in & oil compensate by fitting a hose barb
> connector &
> plastic oil filled tubing around the wire run. This is how they do it on
> the "Dual Deep Worker".
>    I seem to remember them saying they used an oval plastic tube (could be
> wrong)
> but this would be in line with our previous thread on crush pressure of
> round plastic
> This could be an interesting project.
> Thanks Alan
>
>
>   ------------------------------
>  *From:* Hugh Fulton via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* 'Personal Submersibles General Discussion' <
> personal_submersibles at psubs.org>
> *Sent:* Saturday, June 20, 2015 9:36 AM
> *Subject:* Re: [PSUBS-MAILIST] LED Lights
>
> Hi Ken,
> Sounds great.
> I have a couple of housings.  I could send you drawings.  What is your
> email offline.
> Cheers, Hugh.
> hfulton at q-subs.com
>
> -----Original Message-----
> From: Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org] On Behalf Of Ken Martindale via
> Personal_Submersibles
> Sent: Friday, 19 June 2015 1:00 p.m.
> To: 'Personal Submersibles General Discussion'
> Subject: [PSUBS-MAILIST] LED Lights
>
> Any one there,
>
>
> I worked at a job where I designed LED drivers. I was looking at the
> Bridgelux Varo 29 (BXRC-50C 10K0-L-24) which has a light output of a little
> over 10000 lumens.
> I bought one of these but haven’t fired it up, maybe tomorrow.
>
> I can design the driver to interface with almost any input voltage such as
> 10 to 30 volts or 20 to 60 volts, etc.
>
> They make reflectors for this LED so it would be relatively easy to come
> up with a number of 10000 lumen lights for your Subs.
>
> I have some time on my hand and can design the circuitry to drive any
> selected LED module. Or LED.
>
> I have the time and some funding to come up with lights for the subs.
>
> Is anyone interested in this. We could come up with lights that would only
> cost the parts.
>
> The first step would be to come up with a specification that would detail
> most of PSubs needs. Such as variable light output (10,000 to 20,000
> lumens), over temperature protection, reverse polarity protection, LED over
> current protection, EMI, etc.
>
> I would be interested in doing the design work including PWBs.
>
> What do you guys think?  I would need help on the mechanical housings.
>
> Cooling is a major concern but while immersed there’s lots of water. Above
> water Over temperature protection would prevent any damage if you left the
> lights on by accident.
>
> Any interest? This could be fun. Jon??
>
> The spec would be the first step and then with enough agreement the design
> process would start.
>
> Not too interested in doing this commercially.
>
> For what it’s worth I’m an EE specializing in switch mode power converters.
>
> Ken Martindale
>
>
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