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Forum: Geothermal & Heat Pumps

01-10-19, 07:23 PM

Replies: 148

5 Ton GSHP Build

Views: 225,806

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: 59,224

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: 16,708

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: 8,759

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: 32,516

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: 14,848

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 |...

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