Master of Tables

I started filling the “Biggie”. That red PSU is in – and it looks like doing a brilliant job. I have many details and ideas now on how are things being done and what is behind it. First thing is that this actual PSU seems to be “odd”! This one is much simpler then any other I saw before. It looks like it is dedicated for Graphical-cards only. It has no “Turn ON/OFF” control from the main board (Blue – POWER ON cable) except that common big switch from mains. It also comes with 12V cables only (no 3.5V or 5V or -12V). I actually think it is awesome!

Also discussed that with Richard and he told me to be careful and try to avoid quick/cold starts. Power on PSU on “empty” load and than slowly plunge one electrode into the electrolyte to grow that current load slowly. Also started playing with that electrolyte density and – that’s another long story.

My biggest problem currently is a heat dissipation. Whole system produces too much heat and I can’t make it run for more then ~40 minutes when it rumps up from 20C -> 96C (I don’t want it to become boiling, while I’ve seen it boiling already on 98C) (98C on thermometer – so I think it really was 100+). I’m taking a log of all runs, with start-time, checkpoints, end-time, where I log temperature + current Wattage. I also take a log at the end to have both as well. Plan is to come up with some ideas on how to make whole system more deterministic – perhaps putting all those values in a graph will help! Obviously it would be nice to automate all this properly.

BOM says that this Tuesday should be the coldest day! So looking forward to give it a proper go! Meanwhile a snippet of the log comes here (for fun):

Timestamp [24h]	Temperature [C]	Power [W]
9:35 12/07/2020	16	1050
9:45 12/07/2020	43	1500
< Diluted >
10:00 12/07/2020	33	1015
10:15 12/07/2020	59	1340
10:18 12/07/2020	71	1490
< Diluted >
10:23 12/07/2020	50	966
10:33 12/07/2020	64	1090
10:43 12/07/2020	76	1090
10:50 12/07/2020	82	1208
< Diluted >
14:58 12/07/2020	25	678
15:10 12/07/2020	41	848
15:28 12/07/2020	66	1097
15:38 12/07/2020	76	1205
15:48 12/07/2020	86	1301
15:59 12/07/2020	95	1368
16:06 12/07/2020	98	1389
< Cool down >
16:30 12/07/2020	67	1095
16:40 12/07/2020	80	1238
16:50 12/07/2020	91	1316
16:56 12/07/2020	95	1337
< Cool down >
17:05 12/07/2020	79	1221
17:15 12/07/2020	91	1309
17:21 12/07/2020	95	1331
< Diluted >
17:30 12/07/2020	69	877
17:42 12/07/2020	78	936
18:00 12/07/2020	88	1025
18:10 12/07/2020	92	1070
18:19 12/07/2020	95	1086
< Diluted >
18:43 12/07/2020	50	485
19:10 12/07/2020	94	680
< Cool down >
19:40 12/07/2020	53	580
20:01 12/07/2020	88	749
< Circuit breaker hit -> Cool down >
18:36 13/07/2020	20	432
19:16 13/07/2020	81	NA
< Circuit breaker hit -> Cool down >
20:01 13/07/2020	30	463
21:26 13/07/2020	84	800
< Cool down >
21:52 13/07/2020	58	652
22:06 13/07/2020	86	804