<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1434749417686_24060"><span id="yui_3_16_0_1_1434749417686_26445">Ken,</span></div><div id="yui_3_16_0_1_1434749417686_24060"><span id="yui_3_16_0_1_1434749417686_24205">I am keen on the idea & have ordered a number of cheap led lights, torches &</span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"><span id="yui_3_16_0_1_1434749417686_25364">outdoor lights in past years, with view to making something up.</span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"><span id="yui_3_16_0_1_1434749417686_26446">Have had a surprizing number of failures with cheap led dive lights & torches,</span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"><span>so something built of good components that is reliable would be great.</span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"><span id="yui_3_16_0_1_1434749417686_25292">I have posted this before, but there are a huge amount of lamps, reflectors, leds,</span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"><span id="yui_3_16_0_1_1434749417686_25290">lenses & o-rings on Deal Extreme. You have to hunt through the spares section.</span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"><span id="yui_3_16_0_1_1434749417686_24711"><a href="http://www.dx.com/c/lights-lighting-1399" id="yui_3_16_0_1_1434749417686_24710">http://www.dx.com/c/lights-lighting-1399</a><br></span></div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr">I have been looking at bare alluminium housings that I can hard anodize. Maybe</div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr">just cut an o-ring grove in & oil compensate by fitting a hose barb connector & </div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr">plastic oil filled tubing around the wire run. This is how they do it on the "Dual Deep Worker".</div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr"> I seem to remember them saying they used an oval plastic tube (could be wrong)</div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr">but this would be in line with our previous thread on crush pressure of round plastic</div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr">This could be an interesting project.</div><div id="yui_3_16_0_1_1434749417686_24060" dir="ltr">Thanks Alan</div><div id="yui_3_16_0_1_1434749417686_24060"><span><br></span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1434749417686_24054"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1434749417686_24053"> <div dir="ltr" id="yui_3_16_0_1_1434749417686_24052"> <hr size="1" id="yui_3_16_0_1_1434749417686_24704"> <font size="2" face="Arial" id="yui_3_16_0_1_1434749417686_24057"> <b id="yui_3_16_0_1_1434749417686_24056"><span style="font-weight:bold;" id="yui_3_16_0_1_1434749417686_24055">From:</span></b> Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, June 20, 2015 9:36 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] LED Lights<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1434749417686_24058"><br>Hi Ken, <br clear="none">Sounds great.<br clear="none">I have a couple of housings. I could send you drawings. What is your email offline.<br clear="none">Cheers, Hugh.<br clear="none"><a shape="rect" ymailto="mailto:hfulton@q-subs.com" href="mailto:hfulton@q-subs.com" id="yui_3_16_0_1_1434749417686_26726">hfulton@q-subs.com</a><br clear="none"><br clear="none">-----Original Message-----<br clear="none">From: Personal_Submersibles [mailto:<a shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>] On Behalf Of Ken Martindale via Personal_Submersibles<br clear="none">Sent: Friday, 19 June 2015 1:00 p.m.<br clear="none">To: 'Personal Submersibles General Discussion'<br clear="none">Subject: [PSUBS-MAILIST] LED Lights<br clear="none"><br clear="none">Any one there,<br clear="none"><br clear="none"><br clear="none">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. <br clear="none">I bought one of these but haven’t fired it up, maybe tomorrow.<br clear="none"><br clear="none">I can design the driver to interface with almost any input voltage such as 10 to 30 volts or 20 to 60 volts, etc.<br clear="none"><br clear="none">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.<br clear="none"><br clear="none">I have some time on my hand and can design the circuitry to drive any selected LED module. Or LED.<br clear="none"><br clear="none">I have the time and some funding to come up with lights for the subs.<br clear="none"><br clear="none">Is anyone interested in this. We could come up with lights that would only cost the parts.<br clear="none"><br clear="none">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.<br clear="none"><br clear="none">I would be interested in doing the design work including PWBs.<br clear="none"><br clear="none">What do you guys think? I would need help on the mechanical housings.<br clear="none"><br clear="none">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.<br clear="none"><br clear="none">Any interest? This could be fun. Jon??<br clear="none"><br clear="none">The spec would be the first step and then with enough agreement the design process would start.<br clear="none"><br clear="none">Not too interested in doing this commercially.<br clear="none"><br clear="none">For what it’s worth I’m an EE specializing in switch mode power converters.<br clear="none"><br clear="none">Ken Martindale<br clear="none"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div class="qtdSeparateBR"><br><br></div><div class="yqt4877942978" id="yqtfd81326"><br clear="none"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></body></html>