I think that changing the illumination angle can do a lot more to reduce backscatter than does simply reducing brightness. Certainly my experience has been when diving with a lot of particles in the water that holding lights out to the side and aiming in produces far superior visibility to simply lighting my field of view straight ahead.<br><br>Sean<br><br><br>-------- Original Message --------<br>On Mar. 7, 2020, 17:27, Alan via Personal_Submersibles < personal_submersibles@psubs.org> wrote:<blockquote class="protonmail_quote"><br><html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body><div></div><div>Brian,</div><div>it used to frustrate me that there were so many AC LED lights out there</div><div>& so few DC. There are heaps of dim-able AC lights but I had to get a Chinese</div><div>company to make me up a 36V driver with dimming.</div><div>Dimming is an asset when you get a lot of back scatter in low visibility.</div><div>I have wondered whether you could hack an AC light because they probably</div><div>use a rectifier for DC on the LED.</div><div>Alan </div><div><br>On 8/03/2020, at 12:59 PM, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Arial, sans-serif; font-size:10pt;"><font size="2">There are a lot of 110AC led's out there , it would be a simple matter to run a DC inverter to make 110ac voltage , I wonder if there would be any advantage to that, there might be some better quality led's that are made for AC voltage, Any thoughts on that?</font><div><font size="2"><br></font></div><div><font size="2">Brian</font></div><div><font size="2"><br></font></div><div><font size="2"><br></font><br><span style="font-size: 10pt;">--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:</span><br><br><span style="font-size: 10pt;">From: hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br><span style="font-size: 10pt;">To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span><br><span style="font-size: 10pt;">Subject: [PSUBS-MAILIST] (no subject)</span><br><span style="font-size: 10pt;">Date: Sat, 7 Mar 2020 16:30:26 +0000 (UTC)</span><br><br><div style="font-size: 13px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;"><div dir="ltr"><span><a href="https://www.youtube.com/watch?v=dHDUilUO6P8"> 15:13
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