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Search: Posts Made By: CrankyDoug
Forum: Geothermal & Heat Pumps 01-10-19, 07:23 PM
Replies: 146
Views: 50,987
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
Views: 23,223
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
Views: 4,144
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
Views: 2,340
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
Views: 5,246
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
Views: 4,923
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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