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Updated: 20 min 45 sec ago

Re: Reactive boost for mosfet inverter

1 hour 56 min ago
One more thing that might get you through startup.    Get an on delay timer for the fan and set it to one minute or more. That way you won't be starting two motors at the same time.

Re: New project

2 hours 2 min ago
By chance we are in France. Planning permission was easy as we have one point of contact (the mayor). I sketched my plan on the back of a napkin over a few beers with an architect mate and he later drew up a quick set of plans which I submitted. A mont...

Re: Maint

6 hours 25 min ago
Thanks JW.  Both are welcome improvements, especially the Recent Posts list.

Re: New project

6 hours 34 min ago
It roughly says....

No one can object to your generation of electricity and self consumption installations, as long as you satisfy the appropriate regulations, example, Wind turbines must not be more than 12m, (40ft) high, (any higher then you need ful...

Re: New project

6 hours 44 min ago
Regards Electricty Generation in France.

We have 5kW PV on trackers, 2.5kW PV static array, 3 off HughP's 3.7m (12 footers) 4.5kW, Diameter Wind Turbines, all officially approved and all submitted to the Regional authorities etc, no costs, but just a f...

Re: New project

7 hours 14 min ago
Very interesting.

I would love to do something similar here with our small river, 500gals/second, unfortunately here in Normandy, France, using water that passes through our land is very difficult to get the necessary regulatory permissions.

And the lo...

Re: Reactive boost for mosfet inverter

7 hours 21 min ago
Only if your battery pack is a bit feeble or it has small wires.
Your problem is in the pre H bridge stage. It will use a push pull pwm to take the 12v to 160vdc. This is stored in your HV caps. This is all you have to power a surge + the power the lit...

Re: New project

7 hours 24 min ago
What was done for the fish in the creek and what did you put in for the protection so fish will not go threw your machinery? Just asking. 13

Re: Energy efficient box fans

Sat, 03/28/2015 - 21:08
Yeah, I got to thinking about the noise. Dropping to 12 or 11 volts made a big difference in the noise of those 80mm fans.  Large, slow fans are probably more efficient also.  I have several old PC's to collect fans from,  I'll try running the array at...

Re: Reactive boost for mosfet inverter

Sat, 03/28/2015 - 21:03
The inverter is a SunForce Pro Series model 11240-1. I considered buying an ultracap pack made to start cars and attaching the ultracap pack to the back of the inverter.
http://www.ebay.com/itm/V2-Ultracapacitor-Module-KIT-Battery-Eliminator-Car-Audio-...

Re: Maint

Sat, 03/28/2015 - 19:22
I noticed today this site doesn't have mobile phone optimization, there is a mod "SMF4Mobile Mod" im using it on another SMF forum that I have. I think you can even post pictures using a smart phone.

Im sure the Dans will approve my only problem is the...

Re: Reactive boost for mosfet inverter

Sat, 03/28/2015 - 19:22
The bench grinder acts as a generator, using the inverter  as the magnetizing current, and the inertia of the spinning disks for power. So thats all that is happening. The grinder in fact will be a PF negative as well as the starting of the AC. so reac...

Re: Energy efficient box fans

Sat, 03/28/2015 - 16:47
I had 2 120 volt computer style fans in a frame for awhile... noise level was horrible! Maybe if I can find very low noise fans... I run on low all the time so not moving a huge amount of air just enough to keep a circulation going. Setup for 24 volts ...

Re: Steam Engine!!!

Sat, 03/28/2015 - 16:42
Well this year at the Bonneville salt track, Chuk wrecked out at around 160mph. The accident was very sevier although Chuk made it out with minor injuries. The stream liner is totaled.

Here is a picture of my latest work on my stationary steam engine. ...

Re: New project

Sat, 03/28/2015 - 15:26
A few months later and the out law is back just in time for the next concrete pour.

Reactive boost for mosfet inverter

Sat, 03/28/2015 - 15:24
As some here have suggested, adding a motor to an inverter setup allows starting reactive loads, like an a/c compressor.

I need a practical suggestion for my setup. I have a 20-year-old van and the a/c leaked. It's much cheaper to buy a 120v window uni...

Re: New project

Sat, 03/28/2015 - 15:18
My father in law comes to help with the concrete pour.

Re: Maint

Sat, 03/28/2015 - 15:17
site maint was performed today. Also the recent posts list has been increased from 20 posts to 45. Attachments may now have 512KB.

Re: New project

Sat, 03/28/2015 - 15:14
How will I build the internal boxing???

Re: JB Weld epoxy is magnetic

Sat, 03/28/2015 - 14:52
I have increased the attachment size to 512KB and this should not hurt the forum bandwidth or storage.