<html><head></head><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_ym19_1_1467659132389_4344"><span id="yui_3_16_0_ym19_1_1467659132389_4345">Brian,</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4457"><span id="yui_3_16_0_ym19_1_1467659132389_4456">I have been down that track adapting cheap Chinese dive & other lights.</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4249"><span id="yui_3_16_0_ym19_1_1467659132389_4248">you need a driver. I have a dozen of those big square Chinese leds along</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4254" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4253">with a dozen different drivers, & have destroyed a few of both playing round.</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4251" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4250">You can wind up the voltage & there is a point where you get a fare bit of</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4259" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4304">light from them; but the amp - Volt gradient can skyrocket with the application</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4339" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4338">of just 1 more volt. That's why you need a constant current driver.</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4364" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4365">To check the leds I quite often connect them straight to a bench top power supply & crank up</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4386" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4385">the voltage till they glow, but only for a second.</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4416" dir="ltr"><span id="yui_3_16_0_ym19_1_1467659132389_4415">I pressure tested an led the same as you have to 2000psi & it survived.</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4460" dir="ltr"><span>Cheers Alan</span></div><div id="yui_3_16_0_ym19_1_1467659132389_4458" dir="ltr"><span></span><br></div><div id="yui_3_16_0_ym19_1_1467659132389_4260" dir="ltr"><span></span><br></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1467659132389_4261"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1467659132389_4266" style="display: block;"> <div id="yui_3_16_0_ym19_1_1467659132389_4265" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1467659132389_4264" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1467659132389_4263" dir="ltr"> <font id="yui_3_16_0_ym19_1_1467659132389_4262" face="Arial" size="2"> <hr size="1"> <b><span style="font-weight: bold;">From:</span></b> via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> via Personal_Submersibles <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, July 5, 2016 6:57 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] =?utf-8?q?PSUBS_light_project_status?=<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1467659132389_4464"><br><div id="yiv2081435050">
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<div id="yui_3_16_0_ym19_1_1467659132389_4462" style='font-family: "Calibri", "Segoe UI", "Meiryo", "Microsoft YaHei UI", "Microsoft JhengHei UI", "Malgun Gothic", "sans-serif"; font-size: 12pt;' dir="ltr"><div id="yui_3_16_0_ym19_1_1467659132389_4461">Well duh … this conversation got me thinking. Harold still runs 36v motors. Which means I have two banks of 36v onboard. Don't need a driver. LOL. Sometimes the obvious are the most difficult to see …. Just tried direct wiring and the lumens are blinding.</div><div><br></div><div id="yui_3_16_0_ym19_1_1467659132389_4465">Brian</div><div><br></div><div id="yui_3_16_0_ym19_1_1467659132389_4466"><br></div><div id="yui_3_16_0_ym19_1_1467659132389_4472"><div id="yui_3_16_0_ym19_1_1467659132389_4471"><br></div><div>Sent from Microsoft Surface</div><div><br></div></div></div>
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