[PSUBS-MAILIST] LED Lights

[Dean Cropp via Personal_Submersibles]

Hi Ken..

I am an Underwater cameraman and hopefully soon a SUB builder!!!

I would be interested in your proposal as I already build small housings for some of my lights and struggle to find good LED/Power supply combinations that also are not too difficult to heatsink the heat producing components.

I am interested in building high power LED lights for underwater use for both subs and cameras..

Thanks

Dean
 
> On 19 Jun 2015, at 12:16 pm, John Kammerer via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi Ken:
> 
> Your proposal sounds great, I would be interested in either the 10 k or 20 k LED lights. Probably more than one.
> 
> John K.
> (203) 414-1000 
> 
> Sent from my iPhone
> 
>> On Jun 18, 2015, at 8:59 PM, Ken Martindale via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> 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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