[PSUBS-MAILIST] PSUBS light project status

[Alan James via Personal_Submersibles]

Brian,I have been down that track adapting cheap Chinese dive & other lights.you need a driver. I have a dozen of those big square Chinese leds alongwith a dozen different drivers, & have destroyed a few of both playing round.You can wind up the voltage & there is a point where you get a fare bit oflight from them; but the amp - Volt gradient can skyrocket with the applicationof just 1 more volt. That's why you need a constant current driver.To check the leds I quite often connect them straight to a bench top power supply & crank upthe voltage till they glow, but only for a second.I pressure tested an led the same as you have to 2000psi & it survived.Cheers Alan



      From: via Personal_Submersibles <personal_submersibles at psubs.org>
 To: via Personal_Submersibles <personal_submersibles at psubs.org> 
 Sent: Tuesday, July 5, 2016 6:57 AM
 Subject: Re: [PSUBS-MAILIST] =?utf-8?q?PSUBS_light_project_status?=
   
 <!--#yiv2081435050 p.yiv2081435050MsoListParagraph, #yiv2081435050 li.yiv2081435050MsoListParagraph, #yiv2081435050 div.yiv2081435050MsoListParagraph {margin-top:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;}#yiv2081435050 p.yiv2081435050MsoNormal, #yiv2081435050 li.yiv2081435050MsoNormal, #yiv2081435050 div.yiv2081435050MsoNormal {margin:0in;margin-bottom:.0001pt;}#yiv2081435050 p.yiv2081435050MsoListParagraphCxSpFirst, #yiv2081435050 li.yiv2081435050MsoListParagraphCxSpFirst, #yiv2081435050 div.yiv2081435050MsoListParagraphCxSpFirst, #yiv2081435050 p.yiv2081435050MsoListParagraphCxSpMiddle, #yiv2081435050 li.yiv2081435050MsoListParagraphCxSpMiddle, #yiv2081435050 div.yiv2081435050MsoListParagraphCxSpMiddle, #yiv2081435050 p.yiv2081435050MsoListParagraphCxSpLast, #yiv2081435050 li.yiv2081435050MsoListParagraphCxSpLast, #yiv2081435050 div.yiv2081435050MsoListParagraphCxSpLast {margin-top:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;line-height:115%;}-->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.
Brian


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