Happy new year to all of you! I hope your projects will materialized this year.


I wanted to share with you my progress. As I stated before, I have to rebuild the "Energy Tower" because of the extremely low number of turns of the coils. I did not want to wind the coils manually so I purchased an old coil winding machine. I just finished winding the first section of the device. It was kind of fun using the winder, and in my first trial I was able to make them in just four hours. Here are some pictures of the transformer's section:

http://imageshack.us/photo/my-images/716/w5yl.jpg/


Primary:
750 Turns #16 AWG - Taps: 200, 400, and 600


Secondary:
300 Turns #12 AWG

Also note that I replaced the metal screws with ones built with Nylon.

I will use #14 AWG for the other secondaries. It is somewhat difficult to use #12 AWG wire for such a small iron core.


I am planning on running some experiments within the following two weeks. I will keep you posted.


Bajac

@bajac

I am anxious to see the device working! 

Bajac: In theory the Figuera device should work. The big question is of course is it ou.
Good luck with your replication. Good science is always worth learning about.
Please post your results.
All the best.

Hi Bajac
Glad to see youre still on it !
may u show us what kind of commutator are u using ?, I made one with two comms. from two identical car window DC motors, 8 segments,two brushes each.(4 alternating paired segments with 100 ohms resistor)
I´ll try to input a square pulse over 0, Not smooth, but I think of higher freq.
May post a pic. if someone interested.
Thanks for posting.

a.king21
after revising my posts, I think I owe to apologize for an unfortunate comment I did about your comparison of Tesla (rotating field) and its similarity with Figuera´s patents. Sorry for that. I really appreciate all input of yours, as I learn from everyone here.

kind regards
Alvaro

First, I will use a step drive to generate the two 90 degree phase shifted voltages. I already started writing the code for an Arduino's controller. As a back up, I also have the electronic switching device with the seven resistors as intended in the Figuera's patent.


However, the resistor method is the worse approach for generating the two primary voltages. I am sure that Mr. Figuera use it because he did not have many choices and because of its simplicity. Getting the two phase shifted primary voltages from a small motor-generator configuration had been the only efficient method in 1908.


You should keep in mind the following design criteria when using the voltage division resistor method:


1) Recall that the input voltages have AC and DC components.
2) The resistors value must be chosen to match the impedance of the primary coils to keep the ratio of the AC-to-DC voltage components to a maximum.
3) Practically, how does one know that the resistors' values are just right? The best way is to use an oscilloscope to check the voltage waveform. If the resistor value is too high, the voltage waveform will show small increase and a sudden large peaks. If the resistor value is too low, the minimum voltage value will be high making the AC amplitude (component) small.


It is somewhat difficult to apply mathematics to calculate the value of the resistors because of the large amount of harmonics produced when switching on/off each of the seven resistors.


The Figuera's devices should use step-triangular or half-sine voltage waveform. Square wave should not be applied to this devices. The applied voltage shall increase and decrease gradually. Square and rectangular voltages will just increase and decrease instantaneous.


That is the reason why Figuera went though all the trouble for using the resistors to generate the triangular voltages.


Bajac