Forum: Appliances & Gadgets
08-10-20, 10:19 PM
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Replies: 8
Views: 1,275
Definitely time for a better soldering iron....
Definitely time for a better soldering iron. Something like the TS-100 will handle 12AWG wires with ease. It uses integrated heater cartridges with better coupling than the older irons that merely...
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Forum: Geothermal & Heat Pumps
06-24-20, 09:49 AM
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Replies: 18
Views: 2,675
Go with good quality (e.g. Kester) 63/37 leaded...
Go with good quality (e.g. Kester) 63/37 leaded solder. Lead free is harder to work with so I do not recommend it for a beginner. For the iron, go for the TS100 if you want one that's portable or a...
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Forum: Geothermal & Heat Pumps
06-01-20, 12:02 AM
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Replies: 4
Views: 1,367
Interesting new take on a window A/C
https://www.youtube.com/watch?v=f2NmgOvIv2M
About the only features that seem to be missing are heat pump operation and infrared tracking to automatically direct airflow where needed.
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Forum: Solar Power
04-20-20, 09:54 AM
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Replies: 24
Views: 5,910
I got a lot more parts for the inverter (the...
I got a lot more parts for the inverter (the inverter module itself, capacitor bank, inductor cores, various control circuit parts) and I'm working on it. It will be a long project for sure, one with...
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Forum: Appliances & Gadgets
01-25-20, 11:29 PM
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Replies: 3
Views: 1,573
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Forum: Appliances & Gadgets
12-27-19, 06:41 PM
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Replies: 6
Views: 3,705
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Forum: Solar Power
12-04-19, 10:23 PM
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Replies: 24
Views: 5,910
No, the inverter works by sourcing a current to...
No, the inverter works by sourcing a current to offset the load current, more like "blending" than "switching". For example, if the load is drawing 10A, the inverter will supply 10A to offset it. (In...
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Forum: Solar Power
12-03-19, 11:39 PM
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Replies: 24
Views: 5,910
PV inverter from Prius inverter
I'm looking to build a bigger solar power system, with thermal storage. Since going full grid tie is a bit involved, I'm planning to make it "zero export" with limited battery storage instead....
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Forum: Tools
11-27-19, 07:59 PM
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Replies: 6
Views: 3,827
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Forum: Appliances & Gadgets
08-24-19, 02:33 PM
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Replies: 39
Views: 8,343
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Forum: Appliances & Gadgets
08-22-19, 08:35 PM
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Replies: 39
Views: 8,343
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Forum: Other Improvements
08-22-19, 08:32 PM
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Replies: 5
Views: 1,395
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Forum: Appliances & Gadgets
08-04-19, 08:43 PM
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Replies: 39
Views: 8,343
Just build a dual comparator circuit with one...
Just build a dual comparator circuit with one output to trigger around 3.15V and another around 3.45V. That will give an easy indication of low and high charge. If you want more accuracy, you'll have...
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Forum: Appliances & Gadgets
08-02-19, 08:33 PM
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Replies: 39
Views: 8,343
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Forum: Appliances & Gadgets
08-01-19, 01:03 AM
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Replies: 39
Views: 8,343
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Forum: Appliances & Gadgets
04-18-19, 06:51 PM
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Replies: 5
Views: 2,478
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Forum: The Billiards Room
02-04-19, 10:31 PM
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Replies: 7
Views: 2,989
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Forum: Conservation
01-02-19, 07:01 PM
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Replies: 6
Views: 2,033
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Forum: Solar Power
12-13-18, 12:03 AM
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Replies: 51
Views: 21,219
20V gate IGBTs are pretty unusual. Most common...
20V gate IGBTs are pretty unusual. Most common are 10V to 15V on and 0 to -10V off, the latter being especially variable depending on application - generally high speed switching of more than a few...
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Forum: Conservation
08-06-18, 07:08 PM
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Replies: 189
Views: 37,285
Do you have any dedicated freezers? Install...
Do you have any dedicated freezers? Install relays to bypass the thermostat when the charge level is very high. Also set the water heater to a higher temperature during that time, if it's electric or...
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Forum: Geothermal & Heat Pumps
06-30-18, 12:48 AM
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Replies: 13
Views: 3,201
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Forum: Other Improvements
03-25-18, 02:29 AM
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Replies: 4
Views: 2,033
I have put together a 12.8V, 82Ah LiFePO4 pack...
I have put together a 12.8V, 82Ah LiFePO4 pack (4S15P 32650s) as a drop in replacement for a common 12V lead acid and am currently working on a 16.4V, 65Ah LiMn (2x Nissan Leaf modules) smart battery...
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Forum: The Billiards Room
02-03-18, 01:53 PM
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Replies: 25
Views: 6,904
Found this interesting article about Bitcoin...
Found this interesting article about Bitcoin mining:
http://cseweb.ucsd.edu/~mbtaylor/papers/Taylor_Bitcoin_IEEE_Computer_2017.pdf
Many of the basic concepts also apply to altcoin mining, except...
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Forum: The Billiards Room
02-01-18, 10:44 AM
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Replies: 7
Views: 2,989
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Forum: The Billiards Room
01-31-18, 11:55 PM
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Replies: 7
Views: 2,989
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