OT, but interesting..
 

Those things are pretty well made.. At least this design looks nice..
200W ATX PC POWER SUPPLY

Wow! 300vdc! The 120-240 switching is simple anyways.. :)

Help!
 

I have a dandy blower to do tests with but I can't make it work.

It's a capacitive-start AC motor.

Here's a photo of the wires & connector:


Here's a photo of the connector with the DC resistance I measured across the various terminal combinations:


...and here's a photo of the only identification on the fan:


The fan came from a range hood blower. This fan was one of two., the other motor has a broken internal support. As I read the label, it says Elica, which seems to be a maker of range hoods made in Italy.

I searched for "Elica schematic", "Elica wiring", "Elica diagram", but wasn't able to find any helpful info.

Any ideas?

-AC_Hacker

Brushless DC Motor Control using ATmega32M1
 

Quite by accident, I came across this app note:

Brushless DC Motor Control using ATmega32M1

Looks like the ATmega32M1 is similar to the processor used by the Arduino community plus a Power Stage Controller.

-AC_Hacker

Sorry AC Hacker, I'm not familiar with US wiring, so I wouldn't want to speculate on how to wire it up correctly. I'm also not really a power EE, and haven't done anything in that area since university anyway. I'd be just googling the same as you.

There is some stuff around on the web.. Is there a switch in that fan unit?
One that opens, when the fan motor starts running?

I had one of those flying balls centrifugal gizmos on an old oil burner motor once.
It broke one night at 3AM.. I drilled two small holes in some spring thing that held
one of the weights and tied them together with a paper clip..
It worked for years, until the system was replaced..

Connecting the CSIR Motor for a Change of Rotation

http://i110.photobucket.com/albums/n...ack/baldor.jpg

http://img.photobucket.com/albums/v4...nut/SBLMTR.jpg

igor.chudov.com/manuals/ElectricMotors.pdf

jrandom,

This is actually a euro-fan. Made in Italy I suspect and sold all over Europe and apparently also sold in the US.

So your knowledge might be relevant.

-AC_Hacker

Xringer,

Thanks for the links.

I'll check them out.

-AC_Hacker

Hi,

i am new to this great group and i would like to thank you all for your contributions and thoughtful work. also i did not find the usual off topic sliding on private or ego issues :)

thank you Dave Meinert for sharing your work and showing us that this is feasable and working.

i am going to start building these weeks and would like to ask if any of the "plastic " versions have been finished and are working?

is there anyone who tried the metal version in comparison?

also, did someone experiment with the old AC/dehumidifiers (the surface is great, but just not even for both streams, due to the water-air mechanism )?

thank you very much for your help

laderload

Welcome to EcoRenovator. Please drop a few lines about yourself and your planned and finished projects in the Introductions section.

Welcome to EcoRenovator;)

My plastic version is on hold due to other projects.

-AC_Hacker