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<div><span style="color: rgb(38, 40, 42); font-size: 13px;">Illuminati500 via Stagecraft <stagecraft@theatrical.net> wrote:</span><br></div><div id="ydp3cb35c95yahoo_quoted_3916025022" class="ydp3cb35c95yahoo_quoted"><div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div>>I dream of a point source 1200w equivalent led...i could do so much... all i have </div><div>>been able to do is a big COB with an episoidal reflector and a small aperture on</div><div>> the second focus. (Its not good enough)<br></div><div><div dir="ltr"><br></div><div dir="ltr">I have a similar interest, for the same reasons. LEDs in general need significant heat dissipation. So a high wattage LED in a small place is going to be a problem. And while it is possible to over drive a smaller LED to get more power than it is rated, I don't know the limits. I have seen people mount a LED on a fluid heat exchanger. But, I have never seen anyone try to do that for the purpose of getting a smaller emitting area and boosting the power.</div><div dir="ltr"><br></div><div dir="ltr">One approach I have not seen, is to immerse the entire LED in a container of deionized water, and then circulate that water through a heat exchanger. Note that the LED itself is in direct contact with the deionized water. I have read that metal should not be exposed to deionized water, because it is corrosive. I guess in applications that need the electrical insulation capability of the deionized water, but have metal, they simply coat the metal with something to protect it.</div><div dir="ltr"><br></div><div dir="ltr">-Joe<br clear="none"><div class="ydp3cb35c95yqt3353215998" id="ydp3cb35c95yqtfd33027"><br clear="none"></div><div class="ydp3cb35c95yqt3353215998" id="ydp3cb35c95yqtfd33027"><br></div></div></div>
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