Maybe possible idea for duplicating effect of Holcomb and others

[Ufopolitics]

I don't know why but I can't seem to upload a picture.  I have tried 4 times to upload a picture of a scope shot showing one of the 3 phase signals and the output signal so you could compare them.
Later,
Carroll

Hi Cifta,

The images must be the size and type specified right below the upload section:

I copied and pasted below in quotes:

Allowed file types: txt, tif, xls, doc, odt, pdf, jpg, jpeg, gif, mp3, mpg, flv, mp4, mpeg, png, rm, ra, rmv, avi, zip, wmv, wma, rar, qt, mov, swf, asf, wm2d, 3gp, 3g2
Restrictions: 12 per post, maximum total size 15000KB, maximum individual size 150000KB

I think the size is written wrong, or inverted, individual size= 15000kb/ Total per post 150,000kb

Plus, the width should be 1000 Px max


Take care

Ufopolitics

[SolarLab]

I don't know why but I can't seem to upload a picture.  I have tried 4 times to upload a picture of a scope shot showing one of the 3 phase signals and the output signal so you could compare them.  I don't know what the current is of the 3 phase signals but the voltage is about 10 volts peak to peak.


I did discover that the output signal is always locked in sync to the 3 phase signal.  So apparently Bi is correct that some transformer action is taking place.  And the interesting thing is that when i lock the rotor and the frequency of the output signal goes up the frequency of the 3 phase signal also goes up.  So I guess that means that a locked rotor reduces the load on the driving motor.  I am not sure what that means but I find it interesting.


The picture I wanted to share shows that the 3 phase input signal is much smaller in voltage than the output voltage.  I think that is interesting but it may only mean that the current of the 3 phase signal is higher than the output signal.  I guess I need to find a way to measure that.  Been a long day.  Maybe tomorrow.


Later,
Carroll

Carrol,

Thanks again; 10 Vpp is easy to do from 3 processor DACs through Power OpAmps or Audio Amps.

An interesting device you've developed!

SL

One suggestion for "picture manipulations:"

InfanView (32 or 64) freeware (it's clean) Used it for years:

Install:
https://www.irfanview.com/main_download_engl.htm or
https://www.irfanview.com/64bit.htm
+ Plugins - (both can be downloaded as self extracting or zip format)

Use: (lots of features and file types, including animated .gif)
Pictures, etc. can be easily sized by using (ribbon) Image | Resize/Resample [Ctl-R]
- Set new size as percentage of original;
- reduce file size; see help (No one click solution, but .... new JPG option: Set file size, etc.
- save in nearly any format.

[citfta]

I appreciate all the suggestions for uploading pictures but I have been uploading pictures to this forum for years.  My problem is my internet service.  I have Verizon wireless internet.  It works through the cell phone system.  In the evening after everyone gets home the system slows down to a crawl.  I live out in the country and the Verizon system is just overloaded.  I plan to switch to T-Mobile very soon.  Here in the southeast U.S. T-Mobile has internet speeds almost twice the speed of Verizon.  And their system is rapidly expanding so they are staying ahead of being overloaded.


Well anyway here is the picture I tried to upload last night.


The yellow trace (channel 1) is the signal from one of the 3 phases to another.  The blue trace (channel 2 ) is the output signal from the slip ring of the second alternator.

[bistander]

Cool. Obviously same frequency. Rotor is locked, right?
bi

[citfta]

Yes,  when that scope shot was taken the rotor was locked.  You have mentioned a couple of times that you thought only transformer action was taking place and not a rotating magnetic field.  I think what is actually going on is both.  In a usual configuration a 3 phase industrial motor works by induction or transformer action.  The stator coils induce a current into the rotor that locks the rotor to the stator field but since the stator field is rotating the rotor follows the rotating field.  If  you lose one of the connections then the rotor only sees a single phase.  And therefore has no rotating field to follow.  You can get it spinning by hand and the changing field of the single phase will cause it to keep rotating but the torque is greatly reduced.  Another proof of the rotating field is that by interchanging any two wires of the 3 phase system we cause the rotor to turn in the opposite direction because we have changed the order of the rotating magnetic field.


I think the scope shot shows that the output frequency is locked to the input frequency but is that because of only transformer action or is it also because the field is rotating and the stator is not?  Like you mentioned earlier I am not sure how we could prove it one way or the other.  If you or anyone else has any suggestions for answering that question I am willing to do more testing.


Carroll