This was made by Protocase, to our Solidwords design and artwork. It's laser-cut aluminum with a beautiful conductive finish that looks like stainless.
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John Larkin Highland Technology, Inc
picosecond timing precision measurement
It does look nice. Do the holes on the bottom line up with the front panel well enough? (I use to not design in enough wiggle room.) Aluminum is nice for heat sinks.
John Larkin wrote in news: snipped-for-privacy@4ax.com:
That front plate should be at least 3mm thick, maybe even 4mm. And only two screws on each side holding the chassis box onto the front plate is another fail. Pretty weak for that thin side panel thickness. Id go with four PEMs and countersunk #8 screws from the front of the panel in. 8 all together. Screws are cheap. So are PEMs. They also look good. Socket head countersunk screws look good too.
I mean those are 3 big toroidal transformers you have way back there in the rear of the chassis, right? That is a lot of stress on those front panel attachment tabs.
This could only be installed with another box or support under it. From appearances. I do not think it would self support as it should in a rack with nothing below it. Not without placing extreme stress on the 4 box to front panel mating screws and the front panel itself.
Andy Bennet wrote in news: snipped-for-privacy@brightview.co.uk:
Yeah, there is that. I would use more than one along the bottom too. Oh and one should be Copper. Since the front panel is the thickest, it needs the central ground stud to be placed there as well. Unless he has them all "isolated". Sure.
Seeing the 3D render with the three big toroidal transformers at the back reminded me of the one and only product I've done in a 19" rack-mount case. It had two big linear PSUs, and I wasn't brave enough to fit them at the back. Putting that amount of leverage on the front panel seemed brutal, but lots of other designers seem to do it that way. And fitting the PSUs at the front, of course, caused a whole 'nother set of problems...
I think that order was for about a dozen. It's basically one of the standard Protocase designs, laser-cut for our hole patterns and front panel art. They even cut the fan grille, basically free. They seem to be horrifically nice people.
We left room for a front-panel color LCD and some buttons and a spinner knob. Our launch customer is fine doing everything through Ethernet. Amazon has some cool RJ45-to-bulkhead extender cables, and an even more exotic USB-B to bulkhead extender.
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John Larkin Highland Technology, Inc
The cork popped merrily, and Lord Peter rose to his feet.
Yes. We finally got the purchase order yesterday. An engine test cell typically takes a couple of years from planning to operation. Sometimes we design something, think it is a loser, and then much later people start buying it.
I'd rather design something in one short push, but stretching out the process does allow for some leisurely thinking, which is good too. Of course, the leisurely thinking always ends in a panic to deliver.
The due date on the PO is tomorrow.
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John Larkin Highland Technology, Inc
The cork popped merrily, and Lord Peter rose to his feet.
There's a kilowatt MeanWell 48-volt power supply bolted to the side of the case; it's not heavy. The AC wires from the power entry on the back to the supply will be under 2" long. The switch on the front panel enables DC and doesn't switch real power.
The whole thing will weigh maybe 35 pounds, so I don't expect anything to bend or break.
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John Larkin Highland Technology, Inc
The cork popped merrily, and Lord Peter rose to his feet.
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