<div dir="ltr"><div>While this would work if I moved the driver inside the boat, I still want to try and have the LED light electronics self contained.  As such, the this DC buck convertor is way to large.</div><div><br></div><div>Cliff</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jul 2, 2016 at 3:42 PM, Alan James 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><div style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px;background-color:rgb(255,255,255)"><div><span>Cliff,</span></div><div><span>here is a video revue of a 40V buck converter constant currant driver.</span></div><div dir="ltr"><span>This isn't the video I was looking for. He has one that covers most of</span></div><div dir="ltr"><span>the available options for driving high power leds, but I'm heading out</span></div><div dir="ltr"><span>& he has a lot of videos.</span></div><div dir="ltr"><span>Alan</span></div><div dir="ltr"><a href="https://www.youtube.com/watch?v=S_KjmF1iI9w" target="_blank">Review: 3A 40V Digital Buck DC/DC Converter - It's more like a Bench PSU!</a><br><br></div><div><br></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;max-width:400px" dir="ltr"> <a style="color:rgb(0,0,0)!important;text-decoration:none!important" href="https://www.youtube.com/watch?v=S_KjmF1iI9w" target="_blank" rel="noreferrer"> <table style="max-width:400px" border="0" cellspacing="0" cellpadding="0"> <tbody><tr> <td width="400"> <table width="100%" style="max-width:400px" border="0" cellspacing="0" cellpadding="0"> <tbody><tr> <td background="https://s.yimg.com/vv//api/res/1.2/n.r91VAFxRq0RvFALuPuAQ--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/S_KjmF1iI9w/hqdefault.jpg.cf.jpg" valign="top" style="background: url("https://ci3.googleusercontent.com/proxy/246L-0FB7vqD1ZAsyyhz3fxmVNBw3E_u_B6-l3goMa8IUnjqN_DnPrwX4OwwansHSqD9R2Rsyfnu4vn5QdRPWV_2mS82-BuWwLGK5MDgGvaUNQDaAmffRo0jtRPFa0F5hpL0TekOIJfg-xztdBdNWkub8Cg45498N0cLmZuVPg0CZytpKVoN9T6dkeY2NMflLQFihg7KI6BM0MIiBKDnfjrXbFzX4xRhsQpXcX7tT_gdWC4=s0-d-e1-ft#https://s.yimg.com/vv//api/res/1.2/n.r91VAFxRq0RvFALuPuAQ--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/S_KjmF1iI9w/hqdefault.jpg.cf.jpg") no-repeat center / cover rgb(0, 0, 0); height: 200px;" bgcolor="#000000">  <table style="width:100%" border="0" cellspacing="0" cellpadding="0" valign="top"> <tbody><tr> <td background="https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png" valign="top" style="background: url("https://ci6.googleusercontent.com/proxy/Or0PpNz8Q2N-T77lb2rdWKcTmD4Aucmk2Ee_LS8DyP6g6BDF3rwx4OyZl6lsUYsZqw8AQBiEM0n0IXQQ0XX4vUAoRYgzG6vu_JFg3P_OaiyHSXs0y-U=s0-d-e1-ft#https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png") left top; height: 200px;" bgcolor="transparent">  <table height="185" style="width:100%;height:185px;min-height:185px"> <tbody><tr> <td style="padding:15px 0px 0px 15px;text-align:left;vertical-align:top">  </td> <td style="padding:15px 15px 0px 0px;text-align:right;vertical-align:top"> <div></div> </td> </tr> </tbody></table>  </td> </tr> </tbody></table> </td> </tr> <tr> <td> <table align="center" style="background:rgb(255,255,255);border-width:1px 1px 3px;border-style:solid;border-color:rgb(224,228,233) rgb(224,228,233) rgb(229,45,39);width:95%;margin-right:auto;margin-left:auto;max-width:380px" border="0" cellspacing="0" cellpadding="0"> <tbody><tr> <td style="padding:16px 0px 16px 12px;vertical-align:top;background-color:rgb(255,255,255)"> <img height="32" style="border: 1px solid rgb(224, 228, 233); border-image: none; margin-top: 3px; min-width: 32px;" src="https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/youtube.png">  </td> <td style="padding:16px 12px;width:99%;vertical-align:middle"> <h2 style="margin:0px 0px 4px;line-height:19px;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px">Review: 3A 40V Digital Buck DC/DC Converter - It's more like a Bench PSU!</h2>  <div style="color:rgb(153,153,153);line-height:15px;font-size:11px">This digitally controlled buck converter is so stacked with features, it's more like a miniature bench power...</div> </td> <td style="padding:16px 12px 16px 0px;text-align:right">  </td> </tr> </tbody></table> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div><br></div><div style="display:block">  <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold">From:</span></b> Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br> <b><span style="font-weight:bold">Sent:</span></b> Sunday, July 3, 2016 8:05 AM<br> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] PSUBS light project status<br> </font> </div> <div><br><div><div><div>Cliff,</div><div>what voltage are you running on your sub?</div><div>You can generally run these leds at a lower voltage & it is </div><div>beneficial to them. If you have a bench top power supply that goes to 36V, you can</div><div>slowly power up the led without a driver & check if it is bright enough at 36V. Don't</div><div>do this for more than a second or so or you may destroy the led. I am having a 48V </div><div>system, but the choices in electronics that are compatible, dramatically drops over a 36V system.</div><div>I have looked at just about every off the shelf led dc driver on the planet.</div><div>cheers Alan</div><div><br clear="none"></div><div><br clear="none"><br clear="none">Sent from my iPad</div><div><div><br clear="none">On 3/07/2016, at 7:03 am, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div dir="ltr"><div>This LED driver will not work for the 10K lumen Bridgelux LED as it needs 38V forward voltage , 2.1 amps and 80W.  This driver can only get up to 36V.</div><div><br clear="none"></div><div>Cliff</div></div><div><br clear="none"><div>On Fri, Jul 1, 2016 at 11:39 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div><div style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px;background-color:rgb(255,255,255)"><div><span></span></div><div>Alec,</div><div>I have been working on a light housing. Have attached a dwg but it is not finalized.</div><div>I would have had it completed but have been waiting a Month on a replacement motor</div><div>for my lathe :(</div><div>I am using a square 50W LED, but you can get 60 & 80W LEDs the same size.</div><div>I am NOT putting the driver in the light housing, it ends up sitting at the back of the LED</div><div dir="ltr">where there is a massive amount of heat generated from these high power LEDs.</div><div dir="ltr">Keeping the driver in the hull makes it easy to change out if it fails. </div><div dir="ltr">I am going with an acrylic lens & oil compensated. I would have liked a borosilicate pressure</div><div dir="ltr">resistant lens but it was going to cost $100-+. Also if there is a leak with a pressure resistant</div><div dir="ltr">housing, electrolysis can pressurize it with hydrogen gas.</div><div dir="ltr">I am not using a reflector as they don't seem to do anything with these big LEDs. They are really</div><div dir="ltr">rows of little 1W LEDs,10X6 for a 60W. So you get light being emitted from either side of the inch</div><div dir="ltr">wide emitter, that is hard to control, especially when you are wanting an  80 degree wide angled</div><div dir="ltr">flood light.</div><div dir="ltr">My design also revolves around local stock aluminum tube sizes.</div><div dir="ltr">The LEDs are around 30 to 36V. I am using these as drivers. $4.64 US, not bad.</div><div dir="ltr">Alan</div><div dir="ltr"><a href="http://www.dx.com/p/5a-constant-current-led-driver-module-battery-charger-red-433947#.V3dE1bh96Uk" target="_blank" rel="nofollow" shape="rect">Constant Voltage Constant Current DC-DC Power Module for Arduino</a><br clear="none"><br clear="none"></div><div><br clear="none"></div><div dir="ltr"> <a style="color:rgb(0,0,0)!important;text-decoration:none!important" href="http://www.dx.com/p/5a-constant-current-led-driver-module-battery-charger-red-433947#.V3dE1bh96Uk" target="_blank" rel="nofollow" shape="rect"> <table style="max-width:400px" border="0" cellspacing="0" cellpadding="0"><tbody><tr><td width="400" rowspan="1" colspan="1"> <table width="100%" style="max-width:400px" border="0" cellspacing="0" cellpadding="0"><tbody><tr><td height="" valign="top" bgcolor="#000000" rowspan="1" colspan="1">  <table style="width:100%" border="0" cellspacing="0" cellpadding="0"><tbody><tr><td height="" valign="top" bgcolor="transparent" rowspan="1" colspan="1">  <table height="185" style="width:100%;min-height:185px"><tbody><tr><td style="padding:15px 0px 0px 15px;text-align:left;vertical-align:top" rowspan="1" colspan="1"> <span style="color:rgb(255,255,255);font-size:18px;font-weight:bold"> $ 4.64 </span>  </td><td style="padding:15px 15px 0px 0px;text-align:right;vertical-align:top" rowspan="1" colspan="1"> <div></div> </td></tr></tbody></table>  </td></tr></tbody></table> </td></tr><tr><td rowspan="1" colspan="1"> <table align="center" style="background:rgb(255,255,255);border-width:1px 1px 3px;border-style:solid;border-color:rgb(224,228,233) rgb(224,228,233) rgb(0,0,0);width:95%;margin-right:auto;margin-left:auto;max-width:380px" border="0" cellspacing="0" cellpadding="0"><tbody><tr><td style="padding:16px 0px 16px 12px;vertical-align:top;background-color:rgb(255,255,255)" rowspan="1" colspan="1">  </td><td style="padding:16px 12px;width:99%;vertical-align:middle" rowspan="1" colspan="1"> <h2 style="margin:0px 0px 4px;line-height:19px">Constant Voltage Constant Current DC-DC Power Module for Arduino</h2>  <div style="color:rgb(153,153,153);line-height:15px;font-size:11px">I like this from DX. Find the cool gadgets at a incredibly low price with worldwide free shipping here.</div> </td><td style="padding:16px 12px 16px 0px;text-align:right" rowspan="1" colspan="1">  </td></tr></tbody></table> </td></tr></tbody></table> </td></tr></tbody></table> </a></div><div><br clear="none"></div><div style="display:block">  <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir="ltr"> <font face="Arial" size="2"> </font><hr size="1"> <b><span style="font-weight:bold">From:</span></b> Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight:bold">Sent:</span></b> Saturday, July 2, 2016 1:41 PM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> [PSUBS-MAILIST] PSUBS light project status<br clear="none">  </div> <div><br clear="none"><div><div dir="ltr">Hi gents,<div><br clear="none"></div><div>I have an almost-ready sub but no lights, so was wondering whether to make them per the PSUBS-designed model in the community projects section of the website. I'm in awe of those drawings! However, they show a printed wiring board that is a placeholder for a part still to be designed. I was wondering if that might have happened, or if there might be an ETA?  </div><div><br clear="none"></div><div>Thanks,</div><div><br clear="none">Alec</div></div></div><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"><br clear="none"><br clear="none"></div> </div> </div>  </div></div></div><br clear="none">_______________________________________________<br clear="none">
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