[PSUBS-MAILIST] led

[Alan James via Personal_Submersibles]

 Rick, I spent a lot of time on my light project, initially looking for & buying lights & housings on line, that I could adapt. I ended up buying 70W leds & making my own housings. The housings I had marine anodized. I had to get an led driver designed & built in China, as I wanted dimming. The driver is a constant current step up, step down (buck boost) that takes a 12-60V input. I had the lenses made up in China; 20 for about $2- each. The units were tested to 1000psi. Have used them quite a bit in caves! They get hammered in that instance because they don't have the water cooling & can get very hot. Other people have oil filled spot lights used on off road vehicles successfully, but I wanted more of a race car look to my sub & wanted to avoid the oil. If a housing or light came up that was suitable & easy to adapt I would use it. But bare in mind that most online lights would need marine anodizing. Alan 

    On Wednesday, December 30, 2020, 08:08:07 AM GMT+13, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 I built my own aluminum exterior light housing, 6 each, using a cob led bulb that was 10,000 lumens, DC 34 volt and about 100 watts. My friend found them online and they were about $3.50 each. I fried a number of them due to poor heat sink or driving them too much and finally got them dialed in. I asked my friend to buy some more and he said that the source in Japan does not sell them any more.  I found something similar here in the U.S after hours of searching that matched pretty closely to what I had but they were about $38 each. Is anyone using something similar as far as lumens goes that has any sources I could try or is that price about the best I can do?
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