<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_1435009620191_11967" dir="ltr"><span style="font-family: 'Helvetica Neue', 'Segoe UI', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" class="" id="yui_3_16_0_1_1435009620191_11993">>>>When I had a visit at Nuytco, Dr Phil handed me a DW light and it seems to me it was a complete unit with electronics. </span><span></span></div><div id="yui_3_16_0_1_1435009620191_11967" dir="ltr"><span style="font-family: 'Helvetica Neue', 'Segoe UI', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" class="" id="yui_3_16_0_1_1435009620191_12367">.....You mean this one (attached picture) below Hank. It doesn't seem to have any reflectors. </span></div><div id="yui_3_16_0_1_1435009620191_11967" dir="ltr"><span style="font-family: 'Helvetica Neue', 'Segoe UI', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" class="" id="yui_3_16_0_1_1435009620191_13657">I am just being precautionary bringing up the fact that these units have electrolytic capacitors. They may take the pressure.</span></div><div id="yui_3_16_0_1_1435009620191_11967" dir="ltr"><span style="font-family: 'Helvetica Neue', 'Segoe UI', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" class="" id="yui_3_16_0_1_1435009620191_15976">I have seen people pot them </span><span style="font-family: 'Helvetica Neue', 'Segoe UI', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" id="yui_3_16_0_1_1435009620191_15978">to give them strength, however they fail by overheating so this might exacerbate the heating problem.</span></div><div id="yui_3_16_0_1_1435009620191_11967" dir="ltr"><font face="Helvetica Neue, Segoe UI, Helvetica, Arial, Lucida Grande, sans-serif" id="yui_3_16_0_1_1435009620191_14845"><span style="font-size: 13px;" id="yui_3_16_0_1_1435009620191_14844">Below is part of an article on led drivers.</span></font></div><div style="margin-bottom: 10px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11px;" class="" id="yui_3_16_0_1_1435009620191_15041"><strong style="margin: 0px; padding: 0px;" class="" id="yui_3_16_0_1_1435009620191_15227">Electrolytic Capacitors – LED drivers Achilles Heal</strong><br style="margin: 0px; padding: 0px;" class="">The majority of high power (>15W) LED drivers employ electrolytic capacitors either on the input AC stage to enable filtering of noise or on the output channel DC stage of the driver.</div><div style="margin-bottom: 10px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11px;" class="" id="yui_3_16_0_1_1435009620191_15040">It is well known that electrolytic capacitors are one of the weakest elements of a driver circuit and frequently result in failure, especially at elevated temperatures</div><div style="margin-bottom: 10px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11px;" dir="ltr" class="" id="yui_3_16_0_1_1435009620191_15039">Environmental factors affecting the service life of an aluminum electrolytic capacitor include temperature, humidity and vibration (environment), as well as electrical factors, applied voltage, ripple current and charging/discharging conditions. In capacitors for mid-to-high-voltage filters, temperature and applied voltage are the most important controlling factors. The estimated service life may be calculated based on the core temperature of the capacitor and the applied voltage.</div><div dir="ltr" id="yui_3_16_0_1_1435009620191_15790">Full article...http://www.mondoarc.com/technology/LED/228719/driving_responsibly.html</div><div dir="ltr" id="yui_3_16_0_1_1435009620191_15790"><br></div><div dir="ltr" id="yui_3_16_0_1_1435009620191_15789"><br></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1435009620191_11989"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1435009620191_11988"> <div dir="ltr" id="yui_3_16_0_1_1435009620191_11991"> <hr size="1" id="yui_3_16_0_1_1435009620191_11998"> <font size="2" face="Arial" id="yui_3_16_0_1_1435009620191_11992"> <b><span style="font-weight:bold;">From:</span></b> hank pronk 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> Tuesday, June 23, 2015 12:17 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] LED light bar<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1435009620191_11987"><br><br clear="none">Alec,<br clear="none">Good to hear that they still work. There is plenty of room for a proper penetrator in the end cap and as I said they are very robust. The cable comes out the back of the light in between the cooling fins, I am not sure about putting the penetrator in that spot though. I am going with a p trap tube for simplicity. A little fresh water is no biggy, it will just sink to the bottom of the housing. When I had a visit at Nuytco, Dr Phil handed me a DW light and it seems to me it was a complete unit with electronics. <br clear="none"><br clear="none">Rick, I will get some pictures together to show what I did.<br clear="none">Hank --------------------------------------------<br clear="none">On Sun, 6/21/15, Alec Smyth via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1435009620191_13841">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] LED light bar<br clear="none"> To: "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1435009620191_13842">personal_submersibles@psubs.org</a>><br clear="none"> Received: Sunday, June 21, 2015, 10:36 PM<br clear="none"> <br clear="none"> I have,<br clear="none"> and so far so good with a caveat. I have two lights. They<br clear="none"> both still work well after a year, and have been to 250<br clear="none"> feet. That said, one of them replaced a little of the oil<br clear="none"> with fresh water on the last outing. I think the problem was<br clear="none"> where the cable enters the housing, because it got severely<br clear="none"> pulled sideways (light snagged in tow line). These are<br clear="none"> really well made, but even better would be a light like you<br clear="none"> say with a part can be pulled for drilling and tapping.<br clear="none"> Hank, do you think there's enough space to install a<br clear="none"> proper electrical penetrator? I would love to get rid of the<br clear="none"> weak spot factory cable seal.<br clear="none"> Thanks,<br clear="none"> <br clear="none"> Alec<br clear="none"> On Sun, Jun 21, 2015 at<br clear="none"> 9:40 PM, hank pronk via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1435009620191_13843">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> Alan,<br clear="none"> <br clear="none"> Hmmm maybe I should remove the electronics and put them<br clear="none"> inside the sub. I thought Alec was doing the same thing,<br clear="none"> just flooding the whole light.<br clear="none"> <br clear="none"> Hank--------------------------------------------<br clear="none"> <br clear="none"> On Sun, 6/21/15, Alan James via<br clear="none"> Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] LED light bar<br clear="none"> <br clear="none"> To: "Personal Submersibles General Discussion"<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"> <br clear="none"> Received: Sunday, June 21, 2015, 9:31 PM<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Hank,the led<br clear="none"> <br clear="none"> electronics I've looked at<br clear="none"> in some of my<br clear="none"> <br clear="none"> lampshave<br clear="none"> <br clear="none"> electrolytic capacitors in them, which can crush under<br clear="none"> <br clear="none"> pressure.So<br clear="none"> <br clear="none"> "if" it fails at depth this may be a heads up<br clear="none"> as<br clear="none"> <br clear="none"> to why.Alan<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> From: hank pronk<br clear="none"> via<br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> <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"> <br clear="none"> <br clear="none"> <br clear="none"> To:<br clear="none"> <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"> <br clear="none"> Sent: Monday, June 22,<br clear="none"> <br clear="none"> 2015 12:09 PM<br clear="none"> <br clear="none"> Subject:<br clear="none"> <br clear="none"> [PSUBS-MAILIST] LED light bar<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Success, my new light bar is installed and full<br clear="none"> <br clear="none"> of oil. It was remarkably easy, the end caps come off<br clear="none"> the<br clear="none"> <br clear="none"> bar and are quite heavy, so tapping a 1/8 pipe thread<br clear="none"> was<br clear="none"> <br clear="none"> easy. I filled the light while the end cap was off<br clear="none"> then<br clear="none"> <br clear="none"> reassembled it and topped it up through the hose<br clear="none"> fitting. <br clear="none"> <br clear="none"> I have a p trap line (1/8 nylon) and the whole<br clear="none"> conversion<br clear="none"> <br clear="none"> takes less than an hr. The light works just fine,<br clear="none"> maybe<br clear="none"> <br clear="none"> not as bright as my halogen lights but much easier on<br clear="none"> <br clear="none"> power. The light runs on 10 amps at 24V. 24,000 lumen<br clear="none"> <br clear="none"> Hank<br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles mailing list<br clear="none"> <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"> <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"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles mailing list<br clear="none"> <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"> <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="yqt0116148773" id="yqtfd20003"><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles mailing list<br clear="none"> <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"> <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"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<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"> <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><br><br></div> </div> </div> </div></body></html>