<div dir="ltr"><div>I am with Ken on this.  The spec is written and that is what we have been designing to.   I think having a second enclosure in the pressure hull to hold most of the electronics would work and you could run multiple lights off this hub.  Deep Sea Power and Light have an LED option like this.  Having said that, for this first light, I think we should stick with the spec and design a self contained 10K light.  Nothing prevents anyone from taking the electronics design that Ken comes up with and the housing that I develop and morph these in one way or another to fit their need.  </div><div><br></div><div>Cliff</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Sep 2, 2015 at 5:54 PM, Ken Martindale via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" vlink="purple" link="blue"><div><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt">Putting the driver in the hull is certainly feasible and has appeal but that requires a change in our spec and Cliff needs to wade into this.<u></u><u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt"><u></u> <u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt">That’s why we wrote the spec. not as a cast in concrete but what most of the PSubs wanted (maybe).<u></u><u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt"><u></u> <u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt">Bear in mind the driver will still need a small heat sink to dissipate about 11 or 12 watts and that makes the light into two parts.<u></u><u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt"><u></u> <u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt">We certainly need the LEDs to be cooled by the water.<u></u><u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt"><u></u> <u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt">Ken<u></u><u></u></span></p><p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri",sans-serif;font-size:11pt"><u></u> <u></u></span></p><div><div style="border-width:1pt medium medium;border-style:solid none none;border-color:rgb(225,225,225) currentColor currentColor;padding:3pt 0in 0in"><p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;font-size:11pt">From:</span></b><span style="font-family:"Calibri",sans-serif;font-size:11pt"> Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br><b>Sent:</b> Wednesday, September 02, 2015 6:07 PM<br><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br><b>Subject:</b> Re: [PSUBS-MAILIST] Light lense<u></u><u></u></span></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Ken,<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">it may be worth looking at whether we design this light with the driver in the hull.<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I have covered this in another email, but additionally, the commercial standing<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">lamp I saw, that was using the latest 100W LED array had alluminium heat sinks<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">about 3" long & about 10 of them, out the back. So heat will be a big problem.<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">If we keep the driver in the hull it won't get cooked, & we can heat sink the emitter<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">straight to the back of the housing where it will be cooled by water.<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Alan<u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><u></u> <u></u></span></p></div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><u></u> <u></u></span></p><div><div><div><div align="center" class="MsoNormal" style="background:white;text-align:center"><span style="color:black;font-family:"Helvetica",sans-serif"><hr width="100%" size="1" align="center"></span></div><p class="MsoNormal" style="background:white"><b><span style="color:black;font-family:"Arial",sans-serif;font-size:10pt">From:</span></b><span style="color:black;font-family:"Arial",sans-serif;font-size:10pt"> Ken Martindale via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br><b>To:</b> 'Personal Submersibles General Discussion' <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br><b>Sent:</b> Thursday, September 3, 2015 9:54 AM<br><b>Subject:</b> Re: [PSUBS-MAILIST] Light lense</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><u></u> <u></u></span></p><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt">Alan,</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt">Usually if the driver is a true current source the extra wire doesn’t make much difference (within reason).</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt">Also most drivers filter the switching waveform so the current to the LED is mostly a dc tern with a very low AC component.</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt">Take a look at the design we have on the forum tomorrow late to see what the present design is.</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt">Ken</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="background:white;margin-bottom:12pt"><span style="color:black;font-family:"Helvetica",sans-serif"><u></u> <u></u></span></p></div><div><div><div style="border-width:1pt medium medium;border-style:solid none none;border-color:rgb(225,225,225) currentColor currentColor;padding:3pt 0in 0in"><div><p class="MsoNormal" style="background:white"><b><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt">From:</span></b><span style="color:black;font-family:"Helvetica",sans-serif;font-size:11pt"> Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">mailto:personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Alan via Personal_Submersibles<br><b>Sent:</b> Monday, August 31, 2015 8:49 PM<br><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br><b>Subject:</b> Re: [PSUBS-MAILIST] Light lense</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Hank, that's a good question for Ken.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">As I understand it, the LED drivers have a switching frequency so are turning on & off<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">the power to the LED. When electricity runs through wire it creates a magnetic field &<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">when the power is switched off, the magnetic field collapses & causes a surge of electricity.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Like a coil in a car creating a spark across a spark plug. The LED doesn't like this. <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">The longer the run of wire, the more inductance is created. The capacitor is a buffer for this<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">& there are big ones on high power LED drivers. They are there to combat the inductance from <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">the battery to the driver, but by lengthening the wiring from driver to LED you create the <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">problem out the other side. Perhaps a capacitor could be placed in the light fitting, & the<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">driver in the pressure hull. This would reduce the footprint inside the fitting & stop the rest of the electronics from being exposed to any heat build up. you would still have the problem<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">of pressure on the capacitor if you compensated though. Have seen pressure resistant<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">capacitors, but don't know enough about them.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I will go & see a friend who is an expert on this.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Alan<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><br>Sent from my iPad<u></u><u></u></span></p></div></div><div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><br>On 1/09/2015, at 11:20 am, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<u></u><u></u></span></p></div></div><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt">Alan,v</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt">Why can't the driver stay inside the submarine, why put it in the housing?</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt">Hank</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:10pt">On Monday, August 31, 2015 4:55 PM, Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Hank,<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">you have got me thinking. I don't want to pressure compensate because of the capacitors<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">in the driver. I was also concerned that any fluid might yellow with the heat.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">According to this article, the main problem with LED lights is disipating the heat that comes<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">out the back of the emmitter.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white;margin-bottom:12pt"><span style="color:black;font-family:"Helvetica",sans-serif"><a href="http://www.deepsea.com/wp-content/uploads/article-Application-of-High-Power-LEDs-UI08.pdf" target="_blank">http://www.deepsea.com/wp-content/uploads/article-Application-of-High-Power-LEDs-UI08.pdf</a><u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I could seal off the driver compartment at the back of the emmitter & fill that with oil. However<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I will be machining this out of alluminium rod & can keep the enclosure round the driver pretty small<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">so there isn't much of an air gap to the housing.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Could easily experiment with & without oil to see if it makes much difference.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Alan<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><div><div><div align="center" class="MsoNormal" style="background:white;text-align:center"><span style="color:black;font-family:"Helvetica",sans-serif"><hr width="100%" size="1" align="center"></span></div><div><p class="MsoNormal" style="background:white"><b><span style="color:black;font-family:"Helvetica",sans-serif;font-size:10pt">From:</span></b><span style="color:black;font-family:"Helvetica",sans-serif;font-size:10pt"> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br><b>Sent:</b> Tuesday, September 1, 2015 10:09 AM<br><b>Subject:</b> Re: [PSUBS-MAILIST] Light lense</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt">Alan,</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt">I assume your going with a pressure housing?  why not fill the pressure housing 95% full of oil to tsf the heat to the water?</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt">Hank</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div><div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:9pt"> </span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div><div><div><div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif;font-size:10pt">On Monday, August 31, 2015 4:00 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:</span><span style="color:black;font-family:"Helvetica",sans-serif"><u></u><u></u></span></p></div></div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Sorry part 2 ( ipad & big fingers)<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">The LED cost $11- & the driver $6-.  Free delivery.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I have ordered a number of reflectors for a couple of dollars each.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">The driver is quite small. With the automated assembly processes<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">& micro sized components, you can't get anywhere near this size<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">soldering on the components yourself.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Because of the heat factor I am limiting myself to the 6000lm LED.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Will be looking at the beam angle I get from these reflectors & available glass <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">lenses, before making up a housing. Looking for a borosilicate lense<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">because of the heat transfer & low expansion.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I have taken a different route from Ken, but this process he started has<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">been very helpful & motivating, as has been the discussion & information<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">that has come out. <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Alan<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><br><br>Sent from my iPad<u></u><u></u></span></p></div></div><div><div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><br>On 1/09/2015, at 9:42 am, Alan <<a href="mailto:alanlindsayjames@yahoo.com" target="_blank">alanlindsayjames@yahoo.com</a>> wrote:<u></u><u></u></span></p></div></div></div></div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">I bought a 24-36V 6000 lm & 4000 lm LED array along with drivers, <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">& have another lot in the post.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">The driv<br><br>Sent from my iPad<u></u><u></u></span></p></div></div><div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><br>On 1/09/2015, at 4:09 am, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<u></u><u></u></span></p></div></div><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Ken is in Ireland on a holiday but before he left, he had finished the design of the LED Driver power stage.  Still working on the housing but have been sidetracked the last month on getting my boat ready to dive after major upgraded over the last 18 months. Hope to get back on the Light housing shortly.  I did dive the new 5K LED light this weekend and it worked great.<u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">Cliff<u></u><u></u></span></p></div></div></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">On Mon, Aug 31, 2015 at 8:09 AM, Jon Wallace via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<u></u><u></u></span></p></div><blockquote style="border-width:medium medium medium 1pt;border-style:none none none solid;border-color:currentColor currentColor currentColor rgb(204,204,204);margin:5pt 0in 5pt 4.8pt;padding:0in 0in 0in 6pt"><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><br>What has happened with the light build?<br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div></blockquote></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div></div></blockquote><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div></div></blockquote></div></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div></div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div></div></div></div></div></div></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div></div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div></div></div></div></div></div></div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div></div><div style="margin-bottom:12pt"><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"> <u></u><u></u></span></p></div></div></div></div></div></div></div></blockquote><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div></div></blockquote></div></div></div></div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif"><u></u> <u></u></span></p><div><p class="MsoNormal" style="background:white"><span style="color:black;font-family:"Helvetica",sans-serif">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><u></u><u></u></span></p></div><p class="MsoNormal" style="background:white;margin-bottom:12pt"><span style="color:black;font-family:"Helvetica",sans-serif"><u></u> <u></u></span></p></div></div></div></div></div></div><br>_______________________________________________<br>
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<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
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