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Post by keymod on Sept 15, 2014 10:58:16 GMT -6
I needed a power supply to bench test the modules I have been building so that I don't have to access my in-use racks. I also wanted a supply I could use with a JLM Headphone Amp that I built. I chose a kit from Five Fish which can power up to four devices. However, I needed a case for it. Being an electrician, I just happened to have a three-gang industrial box and blank cover, so I put that to use. I thought some of you folks might like to see it.
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Post by svart on Sept 15, 2014 11:45:56 GMT -6
Nice! You could also mount the TO220 parts directly to the case for better heatsinking. Once you close the top, those heatsinks won't do much as the ambient temp inside reaches homeostasis.
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Post by keymod on Sept 15, 2014 11:51:20 GMT -6
Thanks for pointing out the heat issue, which I hadn't thought of. Maybe I should punch out a few of those knock-outs to let air through.
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Post by svart on Sept 15, 2014 11:53:03 GMT -6
You might even be able to find a small fan.. Knock out a couple holes and mount the fan in one and a little filter in the other and let the fan draw through the filter into the box. That should work dandy.
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Post by jimwilliams on Sept 15, 2014 12:44:36 GMT -6
Just remount the regs to the side panel, use a isolation/heat pad to avoid case shorts. Check with a continuity meter afterwards. Then the box becomes the heat sink, no fan nor holes needed. If you change regulators to LT1086/1033's you can get 3 amps per rail and lower the regulator noise.
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Post by keymod on Sept 15, 2014 14:35:52 GMT -6
Hi Jim, Thanks for the suggestions.
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Post by keymod on Feb 2, 2015 9:00:46 GMT -6
So I finished the two JLM headphone amps, got them in a rack and fired them up. They sound really good. Nice and simple project with excellent results.
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Post by tonycamphd on Feb 2, 2015 13:59:12 GMT -6
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