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Posts Made By:
CrankyDoug
Forum:
Geothermal & Heat Pumps
01-10-19, 07:23 PM
Replies:
148
5 Ton GSHP Build
Views:
220,205
Posted By
randen
Fellow eco-renovators. Thought I would...
Fellow eco-renovators.
Thought I would issue a milestone. The DIY shop heatpump has now been operating since October 29 2014 without any problems what so ever!!! That’s 5 yrs trouble free. In...
Forum:
Solar Power
12-12-18, 11:03 PM
Replies:
51
Using RF coax cable as DC Solar PV cable
Views:
56,928
Posted By
NiHaoMike
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...
Forum:
Solar Power
11-23-18, 10:54 PM
Replies:
17
PV direct to water heat
Views:
15,528
Posted By
jeff5may
The igbt devices aren't a mystical mystery device...
The igbt devices aren't a mystical mystery device at all. If you know the characteristics of the old school bipolar power transistors, that's how igbt transistors handle the high power switching...
Forum:
Appliances & Gadgets
11-22-18, 04:29 PM
Replies:
4
UV water sterilization - ballasts by the dozen
Views:
7,864
Posted By
oil pan 4
Figure out what voltage and power it uses and get...
Figure out what voltage and power it uses and get a ballast transformer.
That'swhat I did.
Forum:
Other Improvements
06-18-18, 10:34 PM
Replies:
12
Cleaning silt from a bored well
Views:
31,437
Posted By
sunspot
Instead of timers and ICB's you might look at: ...
Instead of timers and ICB's you might look at:
Pumptec Family | Residential/Light Commercial | Drives & Protection | North America Water | Franklin Electric...
Forum:
Geothermal & Heat Pumps
05-07-18, 08:57 AM
Replies:
15
Mini-splits - cheap vs not cheap
Views:
13,969
Posted By
pinballlooking
I have three Gree Terra series we use them every...
I have three Gree Terra series we use them every day and they have performed well. They are very quite and with AC use very little power.
Terra Series - Ductless Wall Mount Heating and Cooling |...
Showing results 1 to 6 of 6
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