Building a case for node9 servers. My car battery went down one day and that was an impulse to do something with that bunch of adapters hanging on the extension cord which are now powering the boards, make some cooling also and come closer to possibility of local solar setup. Bought two Mean Well PSC-60A with rated power 60W and 12V output. These PSUs have UPS function so they can be connected to 12V battery which is used as a backup and they can charge the battery with 1.5 A. They have efficiency 84% and MTBF 590 K hours. They do not have 5V circuit - anyway most of PSU have just 5V 3A and we need more - so the black boxes are DC-DC converters SKM30A-05 from 12V to 5V rated 30W so it can run Raspberry or Jetson (3A required + min. 1A for SSD drives) and have some overhead, they will run 24/7 and should not be at peak power all the time. Their efficiency is 88% and MTBF 700Khours. So two 12V circuits for Odroid and Mikrotik routerboard with barrel jacks 5.5/2.1 and two 5V circuits with USB-C (bought 15cm USB-C power cables rated 100W). I desintegrated old DIY amplifier and it has nice aluminium skeleton obviously some universal building system, that will be nice housing i guess. 12V PSUs have also signalling of AC OK and Battery low, which could be used to control the power, so there could be some relay at the AC input (black wire) used to disconnect grid AC and run on battery charging from solar panel. But that will be some future phase, for now just old battery as backup will be connected and i will do some measurements.
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