[PSUBS-MAILIST] LED lights

[Alan via Personal_Submersibles]

Jon,
I had the driver designed to run off 12-54V. 
It is a buck / boost ( step up, step down) unit with constant current & constant
voltage. The one thing I don't like about it is that failure mode is on, & on at about
150W.  If the wires to the potentiometer break the lights go on full.
With a main switch on the battery input leads this won't be a problem.
The led itself runs off 36V. A lot of those high powered LEDs are 32-36V.
If you have a 36V battery bank I would use that voltage otherwise you will be
drawing 3 times the amps off 12V. Not a big deal though.
Alan

> On 17/06/2019, at 11:18 AM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
> 
> One other thing...what are voltage are you using for your lights?  I think the Bridgelux is 36vdc...I'm going to be running my lights off of 12vdc.
> 
> Jon
> 
> 
> On Sunday, June 16, 2019, 7:11:42 PM EDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Jon,
> Will do a video tonight.
> It was such a pain machining the housing on a small lathe with not a great
> deal of experience, that I am not wanting to make up a lot of them myself.
> I have done the hard work in prototyping them though.
> Another thing I forgot to mention is that any off the shelf unit that you may
> oil compensate will probably have big electrolitic capacitors in them.
> You may know that these have slits in the top of them that create a weak point
> so if they blow they blow out the top. I am not sure that they put these slits in 
> in the old days, but this makes them particularly weak under pressure.
> BTW I tested my lights out to 1000psi.
> Cheers Alan
> 
> 
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